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Eaton/Moeller
S701C25B3S
Type S701 Soft Start Controller with Brake
S701C25B3S Solid State Soft Start Controller
Product Description

The S701 soft start controller with DC injection brake is designed to control acceleration and deceleration of three-phase motors. Brake current is adjustable from 0–50A DC. The ramp-up feature is adjustable from 0.5–10 seconds. Torque adjustment is adjustable with or without break loose (kick start) function.

S701C25B3S Specifications - Three-Phase Motor
Rated
Current		 Line
Voltage		 Control
Voltage
(Vac/Vdc)		 kW Rating (50 Hz) hp Rating (60 Hz)
200 V 230 V 460 V
230 V 380-400 V 440 V 1.0 SF 1.15 SF 1.0 SF 1.15 SF 1.0 SF 1.15 SF
25 208–240 24–230 5.5 N/A N/A 5 5 7.5 5 N/A N/A

S701 Specifications
Description S701C25B3S S701E25B3S
Maximum
current capacity		 25 25
Trip Class - 10A 25 25
Trip Class - 10 25 25
Trip Class - 20 20 20
Trip Class - 30 15 15
Electrical Characteristics
Line voltage (Vac)  208–240 380–480
Operating frequency (Hz)  50/60 50/60
Leakage current  5 mA AC max. 5 mA AC max.
Minimum operational current 1A 1A
Control voltage (Vac/Vdc) 24–230 24–480
Pickup voltage max. 20.4 Vac/Vdc 20.4 Vac/Vdc
Dropout voltage min.  5 Vac/Vdc 5 Vac/Vdc
Max. control current
for no operation  		1 mA 1 mA
Response time max. 100 ms 100 ms
Control Characteristics
Ramp time (secs) 0.5–10 0.5–10
Ramp settings (% LRT) 85% 85%
Kick start settings (% LRT) 85% 85%
Soft stop (secs) 0.5–10 0.5–10
Brake current 0–50 Vdc 0–50 Vdc
Environmental Characteristics
Temperature—operating –30° to 40° C –30° to 40° C
Current rating 50° C  20A 20A
Limited duty cycle 50° C 25A on-time max.
15 min. duty cycle max. 0.8		 25A on-time max.
15 min. duty cycle max. 0.8
Current rating 60° C 17A 17A
Limited duty cycle 60° C 25A on-time max.
15 min. duty cycle max. 0.65		 25A on-time max.
15 min. duty cycle max. 0.65
Temperature—storage –30° to 80° C –30° to 80° C
Altitude (meters)—no derating 2000 2000
Humidity  95% noncondensing 95% noncondensing
Operating position Vertical ±0° Vertical ±0°
Impulse withstand
voltage IEC 947-4-1		 4000 V 4000 V
Rated insulation voltage (Ui) 660 V  660 V
Installation category III III
Vibration IEC 68-2-6 5g 10–150 Hz IEC 68-2-6 5g 10–150 Hz
Power dissipation
for intermittent operation		  2 W/A x duty cycle 2 W/A x duty cycle
Power dissipation
for continuous operation  		2 W/A 2 W/A
Cooling method Natural convection Natural convection
Degree of protection IP20 IP20
Pollution degree 3 3
Agency approvals UL, cUL, CE UL, cUL, CE

S701 Series Part Numbers
Rated
Current		 Line
Voltage		 Control
Voltage
(Vac/Vdc)		 Part
Number
25 208–240 24–230 S701C25B3S
25 380–480 24–480 S701E25B3S

S701C25B3S Dimensions
Width Height Depth Weight
in Lbs (kg)
3.54 (89.9) 3.94 (100.1) 5.04 (128.0) 2.53 (1150)

S701 Part Number Selection Guide
S701 Part Number Selection Guide

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