Eaton Series-C Molded Case Circuit Breakers Internal Accessories

Internal Accessories
Product Overview
Alarm Switch
For remote indication of automatic trip operation. Does not function with manual switching; however, it will operate when either a shunt trip or undervoltage release is operated. A “make” contact closes and a “break” contact opens when the alarm/lockout switch operates. The switch automatically resets when the circuit breaker is reset.
Auxiliary Switch
The auxiliary switch provides circuit breaker contact status information by monitoring the position of the molded cross bar that contains the moving contact arms. The auxiliary switch is used for remote indication and interlock system verification, and consists of one or two SPDT switches housed in a plug-in module. Each SPDT switch has one “a” and one “b” contact. When the circuit breaker contacts are open, the “a” contact is open and the “b” contact is closed.
Auxiliary Switch and Alarm Switch Combination
In an auxiliary switch ASL switch combination, the auxiliary switch is always mounted on the side of the plug-in module next to the center pole of the circuit breaker.
Shunt Trip
The shunt trip provides remote controlled tripping of the circuit breaker. The shunt trip consists of an intermittent rated solenoid with a tripping plunger and a cutoff switch assembled to a plug-in module. When required for ground fault protection applications, certain AC rated shunt trips, as noted in the electrical rating table, are suitable for operation at 55 percent of rated voltage.
Low Energy Shunt Trip
Low energy shunt trip devices are designed to operate from low energy output signals from dedicated current sensors typically applied in ground fault protection schemes. However, with a proper control voltage source, they may be applied in place of conventional trip devices for special applications. Flux paths surrounding permanent magnets used in the shunt trip assembly hold a charged spring poised in readiness to operate the circuit breaker trip mechanism.
When a 100 microfarad capacitor charged to 28 Vdc is discharged through the shunt trip coil, the resultant flux opposes the permanent magnet flux field, which releases the stored energy in the spring to trip the circuit breaker. As the circuit breaker resets, the shunt trip reset arm is actuated by the circuit breaker handle, resetting the shunt trip. The plug-in module is mounted in retaining slots in the top of the trip unit. Coil is intermittent-rated only. Cutoff provisions required in control circuit.
Undervoltage Release Mechanism
The undervoltage release mechanism monitors a voltage (typically a line voltage) and trips the circuit breaker when the voltage falls to between 70 and 35 percent of the solenoid coil rating.
The undervoltage release mechanism consists of a continuous rated solenoid with a plunger and tripping lever mounted in a plug-in module. The tab on the tripping lever resets the undervoltage release mechanism when normal voltage has been restored and the circuit breaker handle is moved to the reset (or OFF) position. With less than pickup voltage applied to the undervoltage release mechanism, the circuit breaker contacts will not touch when a closing operation is attempted.
Note: Undervoltage release mechanism accessories are not designed for, and should not be used as, circuit interlocks.
Accessory Terminal Block (R-Frame)
(For fixed-mounted configuration.) Internal accessory wiring leads are normally supplied with pigtail leads (18 AWG) that exit from the right side of the circuit breaker. Where specified, fixed-mounted accessory terminal blocks are available. A maximum of one 24-point terminal block can be installed on the right side of the circuit breaker for the internal accessories.
PowerNet and Zone Interlock Kits (OPTIM 550 only) K-, L- and N-Frames
Eaton’s PowerNet Communications Kit can be ordered to add PowerNet communications to an existing OPTIM 550 breaker in the field. An 18-inch (457.2 mm) wiring pigtail is routed to the rear of the breaker: two wires for PowerNet and two wires for 24 Vdc (45 mA load). It is recommended that the power supply be an “isolated high quality” unit.
Alarm Switch
G-Frame Alarm Switch (RH Only)(1)

Alarm Switch
Electrical Ratings | Contact Arrangement |
Factory Suffix |
Part Number(2)(3)(4) |
||
Volts | Frequency | Amperes | |||
Alarm Switch | |||||
240 | 50/60 Hz | 6 | 1 Make/1 Break | B3 | 1288C75G03 |
Alarm Switch Auxiliary Switches Combination | |||||
240 | 50/60 Hz | 6 | 1 Make/1 Break and 1A/1B | B13 | 1288C76G09 |
F-Frame Alarm Switch(1)
Number of Contacts (Make and Break) |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Factory Installation Kit(5) | ||||
Same Side | Rear(6) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left(7) | B01 | B02 | B03 | B04 | A1L1LPK | A1L1LTK |
Right | B05 | B06 | B07 | B08 | A1L1RPK | A1L1RTK | |
2 | Left(7) | B09 | B10 | — | B11 | A2L1LPK | A2L1LTK |
Right | B12 | B13 | — | B14 | A2L1RPK | A2L1RTK | |
1 (Make only) | Single-pole | B15(8) | — | — | — | — | — |
F-Frame HMCP Alarm Switch(1)
Number of Contacts (Make and Break) |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Factory Installation Kit(5) | ||||
Same Side | Rear(6) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left(7) | B01 | B02 | B03 | B04 | MA1L1LPK | MA1L1LTK |
Right | B05 | B06 | B07 | B08 | MA1L1RPK | MA1L1RTK | |
2 | Left(7) | B09 | B10 | — | B11 | MA2L1LPK | MA2L1LTK |
Right | B12 | B13 | — | B14 | MA2L1RPK | MA2L1RTK |
J-Frame and HMCP (J) Alarm Switch
Number of Contacts (Make and Break) |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Factory Installation Kit(9) | ||||
Same Side | Rear(7) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left(10) | B01 | B02 | B03 | B04 | A1L2LPK | A1L2LTK |
Right | B05 | B06 | B07 | B08 | A1L2RPK | A1L2RTK(6) |
NOTES:
(1) F-Frame circuit breakers are factory sealed. Underwriters Laboratories requires that internal accessories be installed at the factory. Internal accessories are UL listed for factory installation under E7819. Where local codes and standards permit and UL listing is not required, internal accessories can be field installed. Accessory installation should be done before the circuit breaker is mounted and connected.
(2) Includes 24-inch (609.6 mm) external pigtail leads,18 AWG (16–0.010).
(3) A maximum of two internal accessories may be mounted in a three-pole circuit breaker.
(4) Suitable for mounting in right pole only of two- or three-pole breaker.
(5) Not listed with Underwriters Laboratories; for field installation.
(6) Standard pigtail lead exit location.
(7) Standard mounting location.
(8) Factory installation only. Leads exit load end of circuit breaker.
(9) Listed with Underwriters Laboratories; for field installation on interchangeable trip unit breakers under E64983.
(10) Standard mounting location—leads exit rear of breaker.
K-Frame and HMCP (K) Alarm Switch
Number of Sets of Contacts (1M and 1B) |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Field Installation Kits(1) |
||||
Same Side | Rear(6) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left(3) | B01 | B02 | B03 | B04 | A1L3LPK | A1L3LTK |
Right(4) | B05 | B06 | B07 | B08 | A1L3RPK | A1L3RTK | |
2 | Left(3) | B09 | B10 | — | B11 | A2L3LPK | A2L3LTK |
Right(4) | B12 | B13 | — | B14 | A2L3RPK | A2L3RTK |
L-, HMCP (L) and (M) Frames and Alarm Switch
Number of Sets of Contacts (1M and 1B) |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Field Installation Kits(1) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left(3) | B01 | B02 | B03 | B04 | A1L4LPK | A1L4LTK |
Right | B05 | B06 | B07 | B08 | A1L4RPK | A1L4RTK | |
2 | Left(3) | B09 | B10 | — | B11 | A2L4LPK | A2L4LTK |
Right | B12 | B13 | — | B14 | A2L4RPK | A2L4RTK |
N-Frame and HMCP (N) Alarm Switch
Number of Sets of Contacts (1M and 1B) |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Field Installation Kits(5) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left | B01 | B02 | B03 | B04 | A1L5LPK | A1L5LTK |
Right(3) | B05 | B06 | B07 | B08 | A1L5RPK | A1L5RTK | |
2 | Left | B09 | B10 | — | B11 | A2L5LPK | A2L5LTK |
Right(3) | B12 | B13 | — | B14 | A2L5RPK | A2L5RTK |
R-Frame Alarm Switch (RH Only)
Number of Contacts (Make and Break) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Field Installation Kits(5) Pigtail Leads |
1 | B05 | A1L6RPK |
2 | B12 | A2L6RPK |
NOTES:
(1) Listed with Underwriters Laboratories; for field installation on interchangeable trip unit breakers under E64983.
(2) Standard mounting location.
(3) Standard mounting location—leads exit rear of breaker.
(4) Breakers with K-Frame OPTIM 550 can only accept accessories in left pole.
(5) Listed with Underwriters Laboratories for field installation under E64983.
(6) A maximum of three ASL plug-in modules may be installed in a circuit breaker.
Auxiliary Switch
G-Frame Auxiliary Switch (RH Only)

Auxiliary Switch
Volts | Frequency | Amperes | Contact Arrangement |
Factory Suffix |
Part Number(1)(2) |
240 | 50/60 Hz | 6 | 1a/1b | A3 | 1288C74G03 |
240 | 50/60 Hz | 6 | 2a/2b | A6 | 1288C73G03 |
F-Frame and HMCP (F) Auxiliary Switch
Number of Contacts A and B |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Factory Installation Kit(4) | ||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left(5) | A01 | A02 | A03 | A04 | A1X1PK | A1X1LTK |
Left(5) | A15(7) | A16(7) | A17(7) | — | E1X1PK | — | |
Right or Neutral(6) | A05 | A06 | A07 | A08 | A1X1PK | A1X1RTK(8) | |
Right or Neutral(6) | A18(7) | A19(7) | A20(7) | — | — | — | |
2 | Left(5) | A09 | A10 | — | A11 | A2X1LPK | A2X1LTK |
Left(5) | A21(7) | A22(7) | — | — | E2X1LPK | — | |
Right or Neutral(6) | A12 | A13 | — | A14 | A2X1RPK | A2X1RTK(8) | |
Right or Neutral(6) | A23(7) | A24(7) | — | — | E2X1RPK | — |
F-Frame with Electronic Trip Unit Auxiliary Switch(9)
Number of Contacts A and B |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Factory Installation Kit(4) | ||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Right | A30 | A31 | A32 | — | A1X1RPKFDE | — |
J-Frame and HMCP (J) Auxiliary Switch
Number of Contacts A and B |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Factory Installation Kit(10) |
||||
Same Side | Rear(3) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left | A01 | A02 | A03 | A04 | A1X2PK | A1X2LTK |
Right(11) | A05 | A06 | A07 | A08 | A1X2PK | A1X2RTK(4) | |
2 | Left | A09 | A10 | — | A11 | A2X2PK | A2X2LTK |
Right(11) | A12 | A13 | — | A14 | A2X2PK | A2X2RTK(4) |
NOTES:
(1) Includes 24-inch external pigtail leads, 18 AWG (16–0.010).
(2) A maximum of two internal accessories may be mounted in a three-pole circuit breaker. Suitable for mounting in right pole only of two- or three-pole breaker.
(3) Standard pigtail lead exit location.
(4) Not listed with Underwriters Laboratories; for field installation.
(5) Pigtail wire size: 18 AWG (0.82 mm2).
(6) Not for use on F-Frame with electronic trip unit.
(7) 125 volts (max.), 50/60 Hz switch for use in electronic circuit of 100 micro amperes and 15 Vdc minimum.
(8) Not for use on four-pole circuit breakers.
(9) Only for use on three-pole F-Frame breakers with electronic trip unit.
(10) Listed with Underwriters Laboratories for field installation or interchangeable trip unit breakers under E64983.
(11) Standard mounting location—leads exit rear of breaker.
K-Frame and HMCP (K) Auxiliary Switch
Number of Contacts A and B |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Factory Installation Kit(1) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left | A01 | A02 | A03 | A04 | A1X3PK | A1X3LTK |
Right(2)(3) | A05 | A06 | A07 | A08 | A1X3PK | A1X3RTK(4) | |
2 | Left | A09 | A10 | — | A11 | A2X3PK | A2X3LTK |
Right(2)(3) | A12 | A13 | — | A14 | A2X3PK | A2X3RTK(4) | |
Right | A21 | A22 | — | — | 1482D28G10(6)(7) | — | |
3 | Left | A18 | — | — | A15 | A3X3LPK | A3X3LTK |
Right(3) | A17 | — | — | A16 | A3X3RPK | A3X3RTK(4) |
L-, HMCP (L) and (M) Frames and Auxiliary Switch
Number of Contacts A and B |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Factory Installation Kit(1) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left | A01 | A02 | A03 | A04 | A1X4PK | A1X4LTK |
Right(2) | A05 | A06 | A07 | A08 | A1X4PK | A1X4RTK(4) | |
2 | Left | A09 | A10 | — | A11 | A2X4PK | A2X4LTK |
Right(2) | A12 | A13 | — | A14 | A2X4PK | A2X4RTK(4) | |
3 | Left | A18 | — | — | A15 | A3X4PK | A3X4LTK |
Right(2) | A17 | — | — | A16 | A3X4PK | A3X4RTK(4) |
N-Frame and HMCP (N) Auxiliary Switch
Number of Contacts A and B |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Factory Installation Kit(1) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left | A01 | A02 | A03 | A04 | A1X5PK | A1X5LTK |
Right(2) | A05 | A06 | A07 | A08 | A1X5PK | A1X5RTK(4) | |
2 | Left | A09 | A10 | — | A11 | A2X5PK | A2X5LTK |
Right(2) | A12 | A13 | — | A14 | A2X5PK | A2X5RTK(4) | |
3 | Left | A18 | — | — | A15 | A3X5LPK | A3X5LTK |
Right(2) | A17 | — | — | A16 | A3X5RPK | A3X5RTK(4) |
R-Frame Auxiliary Switch (RH Only)
Number of Contacts A and B |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads Suffix Number(5) |
Field Mounted Field Installation Kits(1) Pigtail Leads |
2 | A12 | A2X6RPK |
4 | A19 | A4X6RPK |
NOTES:
(1) Listed with Underwriters Laboratories for field installation under E64983.
(2) Standard mounting location—leads exit rear of breaker.
(3) Breakers with K-Frame OPTIM 550 can only accept accessories in left pole.
(4) Not for use on four-pole circuit breakers.
(5) A maximum of two auxiliary switches (any combination of 2a/2b or 4a/4b plug-in modules may be installed in a circuit breaker.
(6) This option is not field installable.
(7) Available on the OPTIM 550 only. Communications are not available with this option.
Auxiliary Switch and Alarm Switch Combination
F-Frame Auxiliary Switch and Alarm Switch Combination

Auxiliary Switch
and
Alarm Switch
Combination
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457 mm) Pigtail Leads |
Factory Installation Kit(1) | |||
Same Side | Rear(2) | Terminal Block Same Side |
Pigtail Leads | Terminal Block | |
Left(2) | C01 | C02 | C03 | AAL1LPK | AAL1LTK |
Right | C04 | C05 | C06 | AAL1RPK | AAL1RTK(3) |
F-Frame HMCP Auxiliary Switch and Alarm Switch Combination
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457 mm) Pigtail Leads |
Factory Installation Kit(1) | |||
Same Side | Rear(2) | Terminal Block Same Side |
Pigtail Leads | Terminal Block | |
Left(3) | C01 | C02 | C03 | MAAL1LPK | MAAL1LTK |
Right | C04 | C05 | C06 | MAAL1RPK | MAAL1RPK |
J-Frame and HMCP (J) Auxiliary Switch and Alarm Switch Combination
Number of Sets of Contacts (1A and 1B) (1M–1B) |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457 mm) Pigtail Leads |
Field Mounted Field Installation Kits(4) |
||||
Same Side | Rear(5) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left | C01 | C02 | — | C03 | AAL2LPK | AAL2LTK |
Right(3) | C04 | C05 | — | C06 | AAL2RPK | AAL2RTK(3) |
K-Frame and HMCP (K) Auxiliary Switch and Alarm Switch Combination
Number of Sets of Contacts (1A and 1B) (1M–1B) |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457 mm) Pigtail Leads |
Field Mounted Field Installation Kits(4) |
||||
Same Side | Rear(5) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1 | Left | C01 | C02 | — | C03 | AAL3LPK | AAL3LTK |
Right(5)(6) | C04 | C05 | — | C06 | AAL3RPK(7) | AAL3RTK | |
Right | C07 | C08 | — | — | 1482D28G09(8)(9) | — |
NOTES:
(1) Not listed with Underwriters Laboratories for field installation.
(2) Standard mounting location.
(3) Standard mounting location.
(4) Listed with Underwriters Laboratories for field installation of interchangeable trip unit breakers under E64983.
(5) Standard mounting location—leads exit rear of breaker.
(6) Breakers with K-Frame OPTIM 550 can only accept accessories in left pole.
(7) Will not install on OPTIM Trip (RH).
(8) Available on the OPTIM 550 only. Communications are not available with this option.
(9) This option is not field installable.
L-, HMCP (L) and (M) Frames and Auxiliary Switch and Alarm Switch Combination
Number of Sets of Contacts |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457 mm) Pigtail Leads |
Field Mounted Field Installation Kits(1) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1A, 1B and 1 Make/1 Break |
Left | C01 | C02 | — | C03 | AA114LPK | AA114LTK |
Right(2) | C04 | C05 | — | C06 | AA114RPK | AA114RTK(3) | |
2A, 2B and 1 Make/1 Break |
Left | C07 | C08 | — | C12 | AA214LPK | AA214LTK |
Right(2) | C10 | C11 | — | C13 | AA214RPK | AA214RTK(3) | |
3A, 3B
and 1 Make/1 Break |
Left | C14 | — | — | — | AA314LPK | — |
Right(2) | C15 | — | — | — | AA314RPK | — |
N-Frame and HMCP (N) Auxiliary Switch and Alarm Switch Combination
Number of Sets of Contacts |
Mounting Location (Pole) |
Factory Mounted Connection Type and Location 18-Inch (457 mm) Pigtail Leads |
Field Mounted Field Installation Kits(1) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | ||
1A, 1B
and 1 Make/1 Break |
Left | C01 | C02 | — | C03 | AA115LPK | AA115LTK |
Right(2) | C04 | C05 | — | C06 | AA115RPK | AA115RTK(3) | |
2A, 2B
and 1 Make/1 Break |
Left | C07 | C08 | — | C12 | AA215LPK | AA215LTK |
Right(2) | C10 | C11 | — | C13 | AA215RPK | AA215RTK(3) |
NOTES:
(1) Listed with Underwriters Laboratories for field installation under E64983.
(2) Standard mounting location—leads exit rear of breaker.
(3) Not for use on four-pole circuit breaker.
Shunt Trip
G-Frame Shunt Trip (LH Three-Pole Only)

Shunt Trip
Volts | Frequency | Amperes | Suffix | Part Number |
120 | 50/60 Hz | 1.1 | S1 | 1373D62G01 |
240 | 50/60 Hz | 2.1 | S2 | 1373D62G02 |
12 | DC | 2.8 | S3 | 1373D62G15 |
24 | DC | 5.7 | S4 | 1373D62G16 |
24 | 60 Hz | — | S7 | 1373D62G20 |
F-Frame and HMCP (F) Shunt Trip
Voltage
Rating (AC Frequency = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads(2) |
Factory Installation Kit(1) | ||||
Same Side | Rear(3) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | |
Left-Pole Mounting AC/DC Ratings | ||||||
12–24 Vac or Vdc | S01 | S02 | S03 | S04 | SNT1LP03K | SNT1LT03K |
48–127 Vac or 48–60 Vdc(4) | S05 | S06 | S07 | S08 | SNT1LP08K | SNT1LT08K |
208–380 Vac or 110–127 Vdc | S09 | S10 | S11 | S12 | SNT1LP12K | SNT1LT12K |
415–600 Vac or 220–250 Vdc | S13 | S14 | S15 | S16 | SNT1LP18K | SNT1LT18K |
Right- or Neutral-Pole Mounting AC/DC Ratings(5) | ||||||
12–24 Vac or Vdc | S17 | S18 | S19 | S20 | SNT1RP03K | SNT1RT03K(6) |
48–127 Vac or 48–60 Vdc(4) | S21 | S22 | S23 | S24 | SNT1RP08K | SNT1RT08K(6) |
208–380 Vac or 110–127 Vdc | S25 | S26 | S27 | S28 | SNT1RP12K | SNT1RT12K(6) |
415–600 Vac or 220–250 Vdc | S29 | S30 | S31 | S32 | SNT1RP18K | SNT1RT18K(6) |
NOTES:
(1) Not listed with Underwriters Laboratories, for field installation.
(2) Pigtail wire size: 18 AWG (0.82 mm2).
(3) Standard pigtail lead exit location.
(4) 120 Vac marked suitable for ground fault protection devices.
(5) Standard mounting location.
(6) Not for use on four-pole circuit breakers.
G-Frame circuit breakers are factory sealed. Underwriters Laboratories requires that internal accessories be installed at the factory.
Internal accessories are UL listed for factory installation under E7819.
Where local codes and standards permit and UL listing is not required, internal accessories can be field installed.
Accessory installation should be done before the circuit breaker is mounted and connected.
J-Frame and HMCP (J) Shunt Trip
Voltage
Rating (AC Frequency = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads(2) |
Factory Installation Kit(1) | ||||
Same Side | Rear(3) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | |
Left-Pole Mounting AC/DC Ratings(2) | ||||||
12–24 Vac or Vdc | S41 | S42 | S43 | S44 | SNT2P04K | SNT2T04K |
48–60 Vac or Vdc | S49 | S50 | S51 | S52 | SNT2P06K | SNT2T06K |
110–240 Vac or 110–125 Vdc(3) | S09 | S10 | S11 | S12 | SNT2P11K | SNT2T11K |
380–440 Vac or 220–250 Vdc | S13 | S14 | S15 | S16 | SNT2P14K | SNT2T14K |
480–600 Vac | S17 | S18 | S19 | S20 | SNT2P18K | SNT2T18K |
Right- or Neutral-Pole Mounting AC/DC Ratings | ||||||
12–24 Vac or Vdc | S45 | S46 | S47 | S48 | SNT2P04K | SNT2T04K(4) |
48–60 Vac or Vdc | S53 | S54 | S55 | S56 | SNT2P06K | SNT2T06K(4) |
110–240 Vac or 110–125 Vdc(3) | S29 | S30 | S31 | S32 | SNT2P11K | SNT2T11K(4) |
380–440 Vac or 220–250 Vdc | S33 | S34 | S35 | S36 | SNT2P14K | SNT2T14K(4) |
480–600 Vac | S37 | S38 | S39 | S40 | SNT2P18K | SNT2T18K(4) |
K-Frame and HMCP (K) Shunt Trip
Voltage
Rating (AC Frequency = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads(2) |
Factory Installation Kit(1) | ||||
Same Side | Rear(3) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | |
Left-Pole Mounting AC/DC Ratings(2) | ||||||
12–24 Vac or Vdc | S41 | S42 | S43 | S44 | SNT3P04K | SNT3T04K |
48–60 Vac or Vdc | S49 | S50 | S51 | S52 | SNT3P06K | SNT3T06K |
110–240 Vac or 110–125 Vdc(3) | S09 | S10 | S11 | S12 | SNT3P11K | SNT3T11K |
380–440 Vac or 220–250 Vdc | S13 | S14 | S15 | S16 | SNT3P14K | SNT3T14K |
480–600 Vac | S17 | S18 | S19 | S20 | SNT3P18K | SNT3T18K |
Right- or Neutral-Pole Mounting AC/DC Ratings(5)(6) | ||||||
12–24 Vac or Vdc | S45 | S46 | S47 | S48 | SNT3P04K | SNT3T04K(4) |
48–60 Vac or Vdc | S53 | S54 | S55 | S56 | SNT3P06K | SNT3T06K(4) |
110–240 Vac or 110–125 Vdc(3) | S29 | S30 | S31 | S32 | SNT3P11K | SNT3T11K(4) |
380–440 Vac or 220–250 Vdc | S33 | S34 | S35 | S36 | SNT3P14K | SNT3T14K(4) |
480–600 Vac | S37 | S38 | S39 | S40 | SNT3P18K | SNT3T18K(4) |
NOTES:
(1) Listed with Underwriters Laboratories for field installation under E64983.
(2) Standard mounting location—leads exit rear of breaker.
(3) Suitable for use with Class 1 ground fault sensing element.
(4) Not for use on four-pole circuit breakers.
(5) For use with KT (thermal-magnetic) trip units only.
(6) Breakers with K-Frame OPTIM 550 can only accept accessories in left pole.
L-, HMCP (L) and (M) Frames and Shunt Trip
Voltage
Rating (AC Frequency = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads(2) |
Factory Installation Kit(1) | ||||
Same Side | Rear(3) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | |
Left-Pole Mounting AC/DC Ratings(2) | ||||||
12–24 Vac or Vdc | S01 | S02 | S03 | S04 | SNT4LP03K | SNT4LT03K |
48–60 Vac | S05 | S06 | S07 | S08 | SNT4LP05K | SNT4LT05K |
48–60 Vdc | S85 | S86 | S87 | — | SNT4LP23K | SNT4LT23K |
110–240 Vac | S09 | S10 | S11 | S12 | SNT4LP11K | SNT4LT11K |
110–125 Vdc | S41 | S42 | S43 | S44 | SNT4LP26K | SNT4LT26K |
380–440 Vac or 220–250 Vdc | S13 | S14 | S15 | S16 | SNT4LP14K | SNT4LT14K |
480–600 Vac | S17 | S18 | S19 | S20 | SNT4LP18K | SNT4LT18K |
Right- or Neutral-Pole Mounting AC/DC Ratings(3) | ||||||
12–24 Vac or Vdc | S21 | S22 | S23 | S24 | SNT4RP03K | SNT4RT03K |
48–60 Vac | S25 | S26 | S27 | S28 | SNT4RP05K | SNT4RT05K |
48–60 Vdc | S88 | S89 | S90 | — | SNT4RP23K | SNT4RT23K |
110–240 Vac | S29 | S30 | S31 | S32 | SNT4RP11K | SNT4RT11K |
110–125 Vdc | S45 | S46 | S47 | S48 | SNT4RP26K | SNT4RT26K |
380–440 Vac or 220–250 Vdc | S33 | S34 | S35 | S36 | SNT4RP14K | SNT4RT14K |
480–600 Vac | S27 | S38 | S39 | S40 | SNT4RP18K | SNT4RT18K |
NOTES:
(1) Listed with Underwriters Laboratories, for field installation under E64983.
(2) Standard mounting location—leads exit rear of breaker.
(3) For use with LT (thermal-magnetic) three-pole trip units only.
N-Frame and HMCP (N) Shunt Trip
Voltage
Rating (AC Frequency = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads(2) |
Factory Installation Kit(1) | ||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | |
Left-Pole Mounting AC/DC Ratings(2) | ||||||
9–24 Vac or Vdc | S01 | S02 | S03 | S04 | SNT5LP03K | SNT5LT03K |
48–60 Vac | S05 | S06 | S07 | S08 | SNT5LP05K | SNT5LT05K |
110–240 Vac(3) | S09 | S10 | S11 | S12 | SNT5LP11K | SNT5LT11K |
110–125 Vdc | S412 | S42 | S43 | S44 | SNT5LP26K | SNT5LT26K |
380–440 Vac or 220–250 Vdc | S13 | S14 | S15 | S16 | SNT5LP14K | SNT5LT14K |
480–600 Vac | S17 | S18 | S19 | S20 | SNT5LP18K | SNT5LT18K |
48–60 Vdc | S21 | S22 | S23 | S24 | SNT5LP23K | SNT5LT23K |
R-Frame Shunt Trip (RH Only)
Voltage Rating (AC Frequency = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads(4) |
Field Mounted Field Installation Kits(1) Pigtail Leads |
24 Vac or Vdc | S21 | SNT6P03K |
48–60 Vac | S25 | SNT6P05K |
110–240 Vac | S29 | SNT6P11K |
380–440 Vac or 220–250 Vdc | S33 | SNT6P14K |
480–600 Vac | S37 | SNT6P18K |
48–60 Vdc | S88 | SNT6P23KSNT6P26K |
110–125 Vdc | S45 |
NOTES:
(1) Listed with Underwriters Laboratories for field installation under E64983.
(3) Supply voltages suitable for use with Class 1 GFP devices. Marking label included with accessory kits.
(4) A maximum of two shunt trip plug-in modules may be installed in a circuit breaker.
Low Energy Shunt Trip
Ordering Information
Select shunt trip catalog number for the voltage within the indicated voltage range. Shunt trip coils are designed to be applied at specific AC or DC voltages within the voltage range shown. Electrical ratings are also shown on applicable circuit breaker accessory nameplates.
F-, J-, K-, L-, M-, N- and R-Frames and HMCPs Low Energy Shunt Trip(1)

Low Energy Shunt Trip
Mounting Positions (Pole) |
Factory
Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field
Mounted Field Installation Kits(2) Terminal Block |
||||
Same Side | Rear(3) | Opposite Side |
Same Side | Pigtail Leads | Terminal Block | |
F-Frame | ||||||
Left | N01 | N02 | N03 | N04 | LST1LPK(4) | LST1LTK(4) |
Right(3) | N05 | N06 | N07 | N08 | LST1RPK(4) | LST1RTK(4) |
J-Frame | ||||||
Left | N01 | N02 | N03 | — | LST2LPK | — |
Right(3) | N05 | N06 | N07 | — | LST2RPK | — |
K-Frame | ||||||
Left(3) | N01 | N02 | N03 | — | LST3LPK | — |
Right(5)(6) | N05 | N06 | N07 | — | LST3RPK | — |
L- and M-Frames | ||||||
Left | N01 | N02 | N03 | — | LST4LPK | — |
Right | N05 | N06 | N07 | — | LST4RPK | — |
N-Frame | ||||||
Left(3) | N01 | N02 | N03 | — | LST5LPK | — |
R-Frame | ||||||
Right | N01 | — | — | — | LST6RPK | — |
NOTES:
(1) Cutoff provisions required in control circuit.
(2) Listed with Underwriters Laboratories for field installation under E64983.
(3) Standard mounting location—leads exit rear of breaker.
(4) For F-Frame HMCP, add an “M” to beginning of catalog number. Field Installation Kit referenced for factory use only, not UL listed for field installation.
(5) For use with thermal-magnetic trip units only.
(6) Breakers with K-Frame OPTIM 550 can only accept accessories in left pole.
Undervoltage Release Mechanism
Ordering Information
Select handle reset undervoltage release mechanism catalog number for the voltage within the indicated voltage range. Undervoltage release mechanism coils are designed to be applied at specific AC or DC voltages within the voltage range shown on applicable circuit breaker accessory nameplates.
G-Frame Undervoltage Release Mechanism (LH Three-Pole Only)

Undervoltage Release Mechanism
Volts (AC Only) | Frequency (Hz) | Amperes | Style Numbers(1)(2)(3) | Factory Suffix |
120 | 50/60 | 0.05 | 1373D62G03 | T1 |
24 | 50/60 | 0.22 | 1373D62G04 | T2 |
48 | 50/60 | 0.11 | 1373D62G05 | T3 |
60 | 50/60 | 0.10 | 1373D62G06 | T4 |
110 | 50 | 0.049 | 1373D62G07 | T5 |
2088 | 60 | 0.026 | 1373D62G08 | T6 |
220 | 50 | 0.025 | 1373D62G09 | T7 |
240 | 50/60 | 0.024 | 1373D62G10 | T8 |
380 | 50 | 0.015 | 1373D62G11 | T9 |
415 | 50 | 0.013 | 1373D62G12 | T10 |
440 | 50 | 0.012 | 1373D62G13 | T11 |
480 | 50 | 0.01 | 1373D62G14 | T12 |
NOTES:
(1) Includes 24-inch (609.6 mm) external pigtail leads, 18 AWG (16–0.010).
(2) A maximum of two internal accessories may be mounted in a three-pole circuit breaker.
(3) Suitable for mounting in left pole only of three-pole breaker.
G-Frame circuit breakers are factory sealed. Underwriters Laboratories requires that internal accessories be installed at the factory.
Internal accessories are UL listed for factory installation under E7819.
Where local codes and standards permit and UL listing is not required, internal accessories can be field installed. Accessory installation should be done before the circuit breaker is mounted and connected.
F-Frame Factory Mounted (For F-Frame Breaker and F-Frame HMCP) Undervoltage Release Mechanism
Voltage Rating (AC Freq. = 50/60 Hz) |
Connection Type and Location 18-Inch Pigtail Leads |
Terminal Block Same Side |
||
Same Side | Rear(1) | Opposite Side | ||
Left-Pole Mounting AC Ratings | ||||
12 Vac | U01 | U02 | U03 | U04 |
24 Vac | U05 | U06 | U07 | U08 |
48 Vac | U37 | U38 | U39 | U40 |
60 Vac | U97 | U98 | U99 | U100 |
110—127 Vac | U13 | U14 | U15 | U16 |
208—240 Vac | U17 | U18 | U19 | U20 |
380—480 Vac | U21 | U22 | U23 | U24 |
525—600 Vac | U25 | U26 | U27 | U28 |
Right-Pole Mounting AC Ratings(2)(3) | ||||
12 Vac | U49 | U50 | U51 | U52 |
24 Vac | U53 | U54 | U55 | U56 |
48 Vac | U85 | U86 | U87 | U88 |
60 Vac | U101 | U102 | U103 | U104 |
110—127 Vac | U61 | U62 | U63 | U64 |
208—240 Vac | U65 | U66 | U67 | U68 |
380—480 Vac | U69 | U70 | U71 | U72 |
525—600 Vac | U73 | U74 | U75 | U76 |
Left-Pole Mounting DC Ratings | ||||
12 Vdc | U29 | U30 | U31 | U32 |
24 Vdc | U33 | U34 | U35 | U36 |
48 Vdc | U37 | U38 | U39 | U40 |
60 Vdc | U97 | U98 | U99 | U100 |
110—127 Vdc | U41 | U42 | U43 | U44 |
220—250 Vdc | U45 | U46 | U47 | U48 |
Right-Pole Mounting DC Ratings(2)(3) | ||||
12 Vdc | U77 | U78 | U79 | U80 |
24 Vdc | U81 | U82 | U83 | U84 |
48 Vdc | U85 | U86 | U87 | U88 |
60 Vdc | U101 | U102 | U103 | U104 |
110—127 Vdc | U89 | U90 | U91 | U92 |
220—250 Vdc | U93 | U94 | U95 | U96 |
NOTES:
(1) Standard pigtail lead exit location.
(2) Standard mounting location.
(3) Not for use on right pole of four-pole circuit breaker.
F-Frame circuit breakers are factory sealed. Underwriters Laboratories requires that internal accessories be installed at the factory.
Internal accessories are UL listed for factory installation under E7819.
Where local codes and standards permit and UL listing is not required, internal accessories can be field installed. Accessory installation should be done before the circuit breaker is mounted and connected.
F-Frame Field Mounted Undervoltage Release Mechanism
Voltage Rating (AC Freq. = 50/60 Hz) |
F-Frame Breaker Factory Installation Kits(1) |
F-Frame Breaker HMCP | ||
Pigtail Leads | Terminal Block | Pigtail Leads | Terminal Block | |
Left-Pole Mounting AC Ratings | ||||
12 Vac | UVH1LP02K | UVH1LT02K | MUVH1LP02K | MUVH1LT02K |
24 Vac | UVH1LP03K | UVH1LT03K | MUVH1LP03K | MUVH1LT03K |
48 Vac | UVH1LP22K | UVH1LT22K | MUVH1LP22K | MUVH1LT22K |
60 Vac | UVH1LP24K | UVH1LT24K | MUVH1LP24K | MUVH1LT24K |
110–127 Vac | UVH1LP08K | UVH1LT08K | MUVH1LP08K | MUVH1LT08K |
208–240 Vac | UVH1LP11K | UVH1LT11K | MUVH1LP11K | MUVH1LT11K |
380–480 Vac | UVH1LP15K | UVH1LT15K | MUVH1LP15K | MUVH1LT15K |
525–600 Vac | UVH1LP18K | UVH1LT18K | MUVH1LP18K | MUVH1LT18K |
Right-Pole Mounting AC Ratings(2)(3) | ||||
12 Vac | UVH1RP02K | UVH1RT02K | MUVH1RP02K | MUVH1RT02K |
24 Vac | UVH1RP03K | UVH1RT03K | MUVH1RP03K | MUVH1RT03K |
48 Vac | UVH1RP22K | UVH1RT22K | MUVH1RP22K | MUVH1RT22K |
60 Vac | UVH1RP24K | UVH1RT24K | MUVH1RP24K | MUVH1RT24K |
110–127 Vac | UVH1RP08K | UVH1RT08K | MUVH1RP08K | MUVH1RT08K |
208–240 Vac | UVH1RP11K | UVH1RT11K | MUVH1RP11K | MUVH1RT11K |
380–480 Vac | UVH1RP15K | UVH1RT15K | MUVH1RP15K | MUVH1RT15K |
525–600 Vac | UVH1RP18K | UVH1RT18K | MUVH1RP18K | MUVH1RT18K |
Left-Pole Mounting DC Ratings | ||||
12 Vdc | UVH1LP20K | UVH1LT20K | MUVH1LP20K | MUVH1LT20K |
24 Vdc | UVH1LP21K | UVH1LT21K | MUVH1LP21K | MUVH1LT21K |
48 Vdc | UVH1LP22K | UVH1LT22K | MUVH1LP22K | MUVH1LT22K |
60 Vdc | UVH1LP24K | UVH1LT24K | MUVH1LP24K | MUVH1LT24K |
110–127 Vdc | UVH1LP26K | UVH1LT26K | MUVH1LP26K | MUVH1LT26K |
220–250 Vdc | UVH1LP28K | UVH1LT28K | MUVH1LP28K | MUVH1LT28K |
Right-Pole Mounting DC Ratings(2)(3) | ||||
12 Vdc | UVH1RP20K | UVH1RT20K | MUVH1RP20K | MUVH1RT20K |
24 Vdc | UVH1RP21K | UVH1RT21K | MUVH1RP21K | MUVH1RT21K |
48 Vdc | UVH1RP22K | UVH1RT22K | MUVH1RP22K | MUVH1RT22K |
60 Vdc | UVH1RP22K | UVH1RT22K | MUVH1RP22K | MUVH1RT22K |
110–127 Vdc | UVH1RP26K | UVH1RT26K | MUVH1RP26K | MUVH1RT26K |
220–250 Vdc | UVH1RP28K | UVH1RT28K | MUVH1RP28K | MUVH1RT28K |
NOTES:
(1) Not listed with Underwriters Laboratories, for field installation.
(2) Standard mounting location.
(3) Not for use on right pole of four-pole circuit breaker.
J-Frame and HMCP (J) Undervoltage Release Mechanism
Voltage Rating (AC Freq. = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Field Installation Kits(3) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block(1) Same Side |
Pigtail Leads | Terminal Block(3) | |
Left-Pole Mounting AC Ratings(4) | ||||||
12 Vac | U05 | U06 | U07 | U08 | UVH2LP02K | UVH2LT02K |
24 Vac | U09 | U10 | U11 | U12 | UVH2LP03K | UVH2LT03K |
48—60 Vac | U13 | U14 | U15 | U16 | UVH2LP05K | UVH2LT05K |
110—127 Vac | U17 | U18 | U19 | U20 | UVH2LP08K | UVH2LT08K |
208—240 Vac | U21 | U22 | U23 | U24 | UVH2LP11K | UVH2LT11K |
380—480 Vac | U25 | U26 | U27 | U28 | UVH2LP15K | UVH2LT15K |
Right-Pole Mounting AC Ratings(3) | ||||||
12 Vac | U37 | U38 | U39 | U40 | UVH2RP02K | UVH2RT02K |
24 Vac | U41 | U42 | U43 | U44 | UVH2RP03K | UVH2RT03K |
48—60 Vac | U45 | U46 | U47 | U48 | UVH2RP05K | UVH2RT05K |
110—127 Vac | U49 | U50 | U51 | U52 | UVH2RP08K | UVH2RT08K |
208—240 Vac | U53 | U54 | U55 | U56 | UVH2RP11K | UVH2RT11K |
380—480 Vac | U57 | U58 | U59 | U60 | UVH2RP15K | UVH2RT15K |
Left-Pole Mounting DC Ratings(4) | ||||||
12 Vdc | T01 | T02 | T03 | T04 | UVH2LP20K | UVH2LT20K |
24 Vdc | T05 | T06 | T07 | T08 | UVH2LP21K | UVH2LT21K |
48—60 Vdc | T09 | T10 | T11 | T12 | UVH2LP23K | UVH2LT23K |
110—127 Vdc | T13 | T14 | T15 | T16 | UVH2LP26K | UVH2LT26K |
220—250 Vdc | T17 | T18 | T19 | T20 | UVH2LP28K | UVH2LT28K |
Right-Pole Mounting DC Ratings(3) | ||||||
12 Vdc | T21 | T22 | T23 | T24 | UVH2RP20K | UVH2RT20K |
24 Vdc | T25 | T26 | T27 | T28 | UVH2RP21K | UVH2RT21K |
48—60 Vdc | T29 | T30 | T31 | T32 | UVH2RP23K | UVH2RT23K |
110—127 Vdc | T33 | T34 | T35 | T36 | UVH2RP26K | UVH2RT26K |
220—250 Vdc | T37 | T38 | T39 | T40 | UVH2RP28K | UVH2RT28K |
NOTES:
(1) For electrical rating data for manual, automatic and electrical reset undervoltage release mechanisms, refer to Eaton.
(2) Listed with Underwriters Laboratories for field installation under E64983.
(3) Not for use on right pole of four-pole circuit breakers.
(4) Standard mounting location—leads exit rear of breaker.
K-Frame and HMCP (K) Undervoltage Release Mechanism
Voltage Rating (AC Freq. = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Field Installation Kits(1) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | |
Left-Pole Mounting AC Ratings(2) | ||||||
12 Vac | U05 | U06 | U07 | U08 | UVH3LP02K | UVH3LT02K |
24 Vac | U09 | U10 | U11 | U12 | UVH3LP03K | UVH3LT03K |
48—60 Vac | U13 | U14 | U15 | U16 | UVH3LP05K | UVH3LT05K |
110—127 Vac | U17 | U18 | U19 | U20 | UVH3LP08K | UVH3LT08K |
208—240 Vac | U21 | U22 | U23 | U24 | UVH3LP11K | UVH3LT11K |
380—480 Vac | U25 | U26 | U27 | U28 | UVH3LP15K | UVH3LT15K |
Right-Pole Mounting AC Ratings(3)(4)(5) | ||||||
12 Vac | U37 | U38 | U39 | U40 | UVH3RP02K | UVH3RT02K |
24 Vac | U41 | U42 | U43 | U44 | UVH3RP03K | UVH3RT03K |
48—60 Vac | U45 | U46 | U47 | U48 | UVH3RP05K | UVH3RT05K |
110—127 Vac | U49 | U50 | U51 | U52 | UVH3RP08K | UVH3RT08K |
208—240 Vac | U53 | U54 | U55 | U56 | UVH3RP11K | UVH3RT11K |
380—480 Vac | U57 | U58 | U59 | U60 | UVH3RP15K | UVH3RT15K |
Left-Pole Mounting DC Ratings(2) | ||||||
12 Vdc | T01 | T02 | T03 | T04 | UVH3LP20K | UVH3LT20K |
24 Vdc | T05 | T06 | T07 | T08 | UVH3LP21K | UVH3LT21K |
48—60 Vdc | T09 | T10 | T11 | T12 | UVH3LP23K | UVH3LT23K |
110—127 Vdc | T13 | T14 | T15 | T16 | UVH3LP26K | UVH3LT26K |
220—250 Vdc | T17 | T18 | T19 | T20 | UVH3LP28K | UVH3LT28K |
Right-Pole Mounting DC Ratings(3)(4)(5) | ||||||
12 Vdc | T21 | T22 | T23 | T24 | UVH3RP20K | UVH3RT20K |
24 Vdc | T25 | T26 | T27 | T28 | UVH3RP21K | UVH3RT21K |
48—60 Vdc | T29 | T30 | T31 | T32 | UVH3RP23K | UVH3RT23K |
110—127 Vdc | T33 | T34 | T35 | T36 | UVH3RP26K | UVH3RT26K |
220—250 Vdc | T37 | T38 | T39 | T40 | UVH3RP28K | UVH3RT28K |
NOTES:
(1) Listed with Underwriters Laboratories, for field installation under E64983.
(2) Standard mounting location—leads exit rear of breaker.
(3) For use with KT (thermal-magnetic) trip units only.
(4) Not for use on right pole of four-pole circuit breaker.
(5) Breakers with K-Frame OPTIM 550 can only accept accessories in left pole.
L-, HMCP (L) and (M)-Frames and Undervoltage Release Mechanism
Voltage Rating (AC Freq. = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Field Installation Kits(1) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | |
Left-Pole Mounting AC Ratings(2) | ||||||
12 Vac | U05 | U06 | U07 | U08 | UVH4LP02K | UVH4LT02K |
24 Vac | U09 | U10 | U11 | U12 | UVH4LP03K | UVH4LT03K |
48—60 Vac | U13 | U14 | U15 | U16 | UVH4LP05K | UVH4LT05K |
110—127 Vac | U17 | U18 | U19 | U20 | UVH4LP08K | UVH4LT08K |
208—240 Vac | U21 | U22 | U23 | U24 | UVH4LP11K | UVH4LT11K |
380—480 Vac | U25 | U26 | U27 | U28 | UVH4LP15K | UVH4LT15K |
Right-Pole Mounting AC Ratings(3)(4) | ||||||
12 Vac | U37 | U38 | U39 | U40 | UVH4RP02K | UVH4RT02K |
24 Vac | U41 | U42 | U43 | U44 | UVH4RP03K | UVH4RT03K |
48—60 Vac | U45 | U46 | U47 | U48 | UVH4RP05K | UVH4RT05K |
110—127 Vac | U49 | U50 | U51 | U52 | UVH4RP08K | UVH4RT08K |
208—240 Vac | U53 | U54 | U55 | U56 | UVH4RP11K | UVH4RT11K |
380—480 Vac | U57 | U58 | U59 | U60 | UVH4RP15K | UVH4RT15K |
Left-Pole Mounting DC Ratings(2) | ||||||
12 Vdc | T01 | T02 | T03 | T04 | UVH4LP20K | UVH4LT20K |
24 Vdc | T05 | T06 | T07 | T08 | UVH4LP21K | UVH4LT21K |
48—60 Vdc | T09 | T10 | T11 | T12 | UVH4LP23K | UVH4LT23K |
110—127 Vdc | T13 | T14 | T15 | T16 | UVH4LP26K | UVH4LT26K |
220—250 Vdc | T17 | T18 | T19 | T20 | UVH4LP28K | UVH4LT28K |
Right-Pole Mounting DC Ratings(3)(4) | ||||||
12 Vdc | T21 | T22 | T23 | T24 | UVH4RP20K | UVH4RT20K |
24 Vdc | T25 | T26 | T27 | T28 | UVH4RP21K | UVH4RT21K |
48—60 Vdc | T29 | T30 | T31 | T32 | UVH4RP23K | UVH4RT23K |
110—127 Vdc | T33 | T34 | T35 | T36 | UVH4RP26K | UVH4RT26K |
220—250 Vdc | T37 | T38 | T39 | T40 | UVH4RP28K | UVH4RT28K |
NOTES:
(1) Listed with Underwriters Laboratories for field installation under E64983.
(2) Standard mounting location—leads exit rear of breaker.
(3) For use with LT (thermal-magnetic) trip units only.
(4) Not for use on right pole of four-pole circuit breaker.
N-Frame and HMCP (N) Undervoltage Release Mechanism
Voltage Rating (AC Freq. = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Field Installation Kits(1) |
||||
Same Side | Rear(2) | Opposite Side | Terminal Block Same Side |
Pigtail Leads | Terminal Block | |
Left-Pole Mounting AC Ratings(2) | ||||||
12 Vac | U05 | U06 | U07 | U08 | UVH5LP02K | UVH5LT02K |
24 Vac | U09 | U10 | U11 | U12 | UVH5LP03K | UVH5LT03K |
48—60 Vac | U13 | U14 | U15 | U16 | UVH5LP05K | UVH5LT05K |
110—127 Vac | U17 | U18 | U19 | U20 | UVH5LP08K | UVH5LT08K |
208—240 Vac | U21 | U22 | U23 | U24 | UVH5LP11K | UVH5LT11K |
380—480 Vac | U25 | U26 | U27 | U28 | UVH5LP29K | UVH5LT29K |
Left-Pole Mounting DC Ratings(2) | ||||||
12 Vdc | T01 | T02 | T03 | T04 | UVH5LP20K | UVH5LT20K |
24 Vdc | T05 | T06 | T07 | T08 | UVH5LP21K | UVH5LT21K |
48—60 Vdc | T09 | T10 | T11 | T12 | UVH5LP23K | UVH5LT23K |
110—127 Vdc | T13 | T14 | T15 | T16 | UVH5LP26K | UVH5LT26K |
220—250 Vdc | T17 | T18 | T19 | T20 | UVH5LP28K | UVH5LT28K |
R-Frame Undervoltage Release Mechanism (RH only)
Voltage Rating (AC Freq. = 50/60 Hz) |
Factory Mounted Connection Type and Location 18-Inch (457.2 mm) Pigtail Leads |
Field Mounted Field Installation Kits(3) |
Suffix Number(4) | Part Number(4) | |
12 Vac | U37 | UVH6RP02K |
24 Vac | U41 | UVH6RP03K |
48–60 Vac | U45 | UVH6RP05K |
110–127 Vac | U49 | UVH6RP08K |
208–240 Vac | U53 | UVH6RP11K |
380–500 Vac | U57 | UVH6RP29K |
12 Vdc | T21 | UVH6RP20K |
24 Vdc | T25 | UVH6RP21K |
48–60 Vdc | T29 | UVH6RP23K |
110–125 Vdc | T33 | UVH6RP26K |
220–250 Vdc | T37 | UVH6RP28K |
NOTES:
(1) Listed with Underwriters Laboratories for field installation under E64983.
(2) Standard mounting location—leads exit rear of breaker.
(3) Endurance: 500 electrical operations plus 2500 mechanical operations.
(4) Pigtail wire size: 18 AWG (0.82 mm2). Leads are orange and brown.
Accessory Terminal Block (R-Frame)
R-Frame Accessory Terminal Block(1)

Accessory Terminal Block (R-Frame)
Factory Installed | Field Mounted |
Q01 | TBRDK |
Number of Control Wires for Each Internally Mounted Accessory
Type of Accessory | Number of Contacts per Single Accessory |
Required Number of Wires |
Auxiliary switch | 2a/2b | 6 |
4a/4b | 12 | |
Alarm (Signal)/ Lockout switch |
1m/1b | 6 |
2m/2b | 12 | |
Shunt trip | N/A | 2 |
Low energy shunt | N/A | 2 |
Undervoltage release mechanism | N/A | 2 |
PowerNet and Zone Interlock Kits (OPTIM 550 Only) K-, L- and N-Frames
PowerNet Interlock Kit(2)

PowerNet and Zone Interlock Kits
Circuit Breaker | Factory Install Suffix | Part Number |
K-Frame | PN | ICK550K |
L-Frame | PN | ICK550L |
N-Frame | PN | ICK550N |
Zone Interlock/Ground Kit(2)(3)
Circuit Breaker | Factory Install Suffix | Part Number |
K-Frame | ZG | ZGK550K |
L-Frame | ZG | ZGK550L |
N-Frame | ZG | ZGK550N |
PowerNet and Zone Interlock/Ground Kit(2)(3)
Circuit Breaker | Factory Install Suffix | Part Number |
K-Frame | ZGP | ZGPK550K |
L-Frame | ZGP | ZGPK550L |
N-Frame | ZGP | ZGPK550N |
NOTES:
(1) One 24-point accessory terminal block provided with circuit breaker when ordered factory installed or shipped from warehouse as separate item when ordered for field installation. See Digitrip RMS master connection diagram (IL 29C714).
(2) Installation of these kits restrict any other attachments from being installed in the RH pole.
(3) Includes a ground fault alarm signal that can drive the ground fault alarm unit (catalog number GFAU).