LDC3600 Thermal-Magnetic Circuit Breakers with Interchangeable Trip Units

Number of Poles	Amperes	Interrupting Capacity	Type of Trip	Terminals
3	600	Ultra-High 600 Vac Rated 100 kAIC at 480 Vac	Interchangeable Adjustable Thermal-Magnetic	Standard

Quick Reference Guide

UL 489 Interrupting Capacity Ratings(1)
Circuit Breaker Type	Number of Poles	Interrupting Capacity (kA rms Symmetrical Amperes)
		Volts AC (50/60 Hz)				Volts DC
		240	277	480	600	125	250(2)(3)
LDB	2, 3	65	—	35	25	—	22
LD	2, 3, 4	65	—	35	25	—	22
CLD(4)	2, 3, 4	65	—	35	25	—	—
HLD, HLDB	2, 3, 4	100	—	65	35	—	25
CHLD(4)	2, 3, 4	100	—	65	35	—	—
LDC, LDCB(5)	2, 3, 4	200	—	100	50	—	30
CLDC(4)(5)	2, 3, 4	200	—	100	50	—	—

IEC 947-2 Interrupting Capacity Ratings(1)
Circuit Breaker Type	Number of Poles	Interrupting Capacity (kA Symmetrical Amperes)
		Volts AC (50/60 Hz)						Volts DC
		240		415		690		250(2)(3)
		ICU	ICS	ICU	ICS	ICU	ICS	ICU	ICS
LDB	2, 3	85	85	45	45	20	10	20	10
LD	2, 3, 4	85	85	45	45	20	10	20	10
CLD(4)	2, 3, 4	85	85	45	45	20	10	—	—
HLD, HLDB	2, 3, 4	100	100	70	70	25	13	20	10
CHLD(4)	2, 3, 4	100	100	70	70	25	13	—	—
LDC, LDCB	2, 3, 4	200	100	100	75	35	18	20	10
CLDC(4)	2, 3, 4	200	100	100	75	35	18	—	—

NOTES:
(1) Utilization Category A circuit breakers.
(2) L/R = 8 milliseconds minimum.
(3) Two-pole circuit breaker or two poles of three-pole circuit breaker. Incorporating thermal-magnetic trip unit only.
(4) 100% rated breakers.
(5) Current limiting.

Specifications

Trip Unit Type	Digitrip RMS 310		Digitrip OPTIM 550	Digitrip OPTIM 1050
rms sensing	Yes	Yes	Yes	Yes
Breaker Type
Frame	L	L	L	L
Ampere range	300–600A	300–600A	200–600A	200–600A
Interrupting rating at 480 volts	35, 65, 100 (kA)	35, 65, 100 (kA)	35, 65, 100 (kA)	35, 65, 100 (kA)
Protection
Ordering options	LS, LSG	LSI, LSIG	LSI, LSI(A), LSIG	LSI(A), LSIG
Fixed rated plug (In)	Yes	Yes	Yes	Yes
Overtemperature trip	Yes	Yes	Yes	Yes
Long Delay Protection (L)
Adjustable rating plug (In)	Yes	Yes	No	No
Long delay pickup	0.5–1.0 (In)(1)	0.5–1.0 (In)(1)	0.4–1.0 x (In)	0.4–1.0 x (In)
Long delay time I2t	12 seconds	12 seconds	2–24 seconds	2–24 seconds
Long delay time I4t	No	No	1–5 seconds	1–5 seconds
Long delay thermal memory	Yes	Yes	Yes	Yes
High load alarm	No	No	0.5–1.0 x Ir	0.5–1.0 x Ir
Short Delay Protection (S)
Short delay pickup	200–800% x (In)	200–800% x (In)	150–800% x (Ir)	150–800% x (Ir)
Short delay time I2t	100 ms	No	100–500 ms	100–500 ms
Short delay time flat	No	Inst–300 ms	100–500 ms	100–500 ms
Short delay time zone selective interlocking	No	No	Yes(4)	Yes
Instantaneous Protection (I
Instantaneous pickup	No	200–800% x (In)	200–800% x (In)	200–800% x (In)
Discriminator	No	No	Yes	Yes
Instantaneous override	Yes	Yes	Yes	Yes
Ground Fault Protection (G)
Ground fault alarm	No	No	20–100% x (Is)	20–100% x (Is)
Ground fault pickup	1–5 x Ig (120A)	1–5 x Ig (120A)	20–100% x (Is)	20–100% x (Is)
Ground fault delay I2t	No	No	100–500 ms	100–500 ms
Ground fault delay flat	Inst–500 ms	Inst–500 ms	100–500 ms	100–500 ms
Ground fault zone selective interlocking	No	No	Yes 4	Yes
Ground fault thermal memory	Yes	Yes	Yes	Yes
System Diagnostics
Status LEDs	Yes	Yes	Yes	Yes
Cause of trip LEDs	No	No	Yes	Yes
Magnitude of trip information	No	No	Yes	Yes
Remote signal contact ground alarm	Yes(5)	Yes(5)	Yes(4)	Yes
Local auxiliary and bell alarm contact	Optional	Optional	Optional	Included
System Monitoring
Digital display	No	No	Yes(1)	Yes(1)
Current	No	No	Yes	Yes
Power and energy	No	No	No	Yes
Power quality harmonics	No	No	No	Yes
Power factor	No	No	No	Yes
Communications
PowerNet	No	No	Yes(2)	Yes
Testing
Testing method	Test set	Test set	OPTIMizer, BIM, PowerNet	OPTIMizer, BIM, PowerNet

Legend BIM = Breaker Interface Module (A) = GF Alarm Is = Sensor Rating In = Rating Plug Ir = Long Delay Pickup Setting

Notes: (1) By OPTIMizer/BIM. (2 Eaton’s PowerNet kit.

LDC3600 Dimensions

Number of Poles	Width	Height	Depth
2, 3	8.25 (209.6)	10.75 (273.1)	4.06 (103.1)
4	11.00 (279.4)	10.75 (273.1)	4.06 (103.1)