Cutler Hammer, Div of Eaton Corp S751 Technical Data

Reduced Voltage Motor Starters
Solid-State Reduced Voltage Starters

Open Soft Starters — Intelligent Technologies (IT.) S751

Technical Data — Specifications

Table G-35. S751 Open Soft Staters

Soft Starter
(Partial Catalog Number)

Maximum Current Capacity .8 1.9 4.4 9.0 16 27

Dimensions

Width in Inches (mm) 2.13 (54) 2.13 (54) 2.13 (54) 2.13 (54) 2.13 (54) 2.13 (54)
Height in Inches (mm) 6.92 (175.7) 6.92 (175.7) 6.92 (175.7) 6.92 (175.7) 6.92 (175.7) 6.92 (175.7)
Depth in Inches (mm) 4.13 (104.8) 4.13 (104.8) 4.13 (104.8) 4.13 (104.8) 4.13 (104.8) 4.13 (104.8)
Weight in lbs. (kg) 2.80 (1.27) 2.80 (1.27) 2.80 (1.27) 2.80 (1.27) 2.80 (1.27) 2.80 (1.27)
Drawing See

Electrical Characteristics

Line Voltage (V AC) 200 – 600 200 – 600 200 – 600 200 – 600 200 – 600 200 – 600
Operating Frequency (Hz) 47 – 63 47 – 63 47 – 63 47 – 63 47 – 63 47 – 63
Leakage Current 15 mA AC max.
Min. Operating Current 100 mA
Control Voltage (24V ±10%) 21.6 – 26.4 21.6 – 26.4 21.6 – 26.4 21.6 – 26.4 21.6 – 26.4 21.6 – 26.4
Response Time Max. 250 mS 250 mS 250 mS 250 mS 250 mS 250 mS
Control Steady State Current 200 mA 200 mA 200 mA 200 mA 200 mA 200 mA
Inrush Current (During Bypass) 3.6A @ 50 mS 3.6A @ 50 mS 3.6A @ 50 mS 3.6A @ 50 mS 3.6A @ 50 mS 3.6A @ 50 mS

Control Wiring

Wire Sizes (AWG) 22 – 12 22 – 12 22 – 12 22 – 12 22 – 12 22 – 12
Number of Conductors (Stranded) 2 (or one AWG 12)
T orque Requirements (lb-in) 3.5 3.5 3.5 3.5 3.5 3.5
Solid, Stranded or Flexible Max. Size

(mm2)

Cabling Capacity

Number of Conductors 111111
Wire Sizes 14 – 8 14 – 8 14 – 8 14 – 8 14 – 8 14 – 8
Type of Connectors Box Lugs Box Lugs Box Lugs Box Lugs Box Lugs Box Lugs

Environmental Characteristics

T emperature — Operating (no derating) -35° – 50°C -35° – 50°C -35° – 50°C -35° – 50°C -35° – 50°C -35° – 50°C

G

T emperature — Derate >50°C (max. 65°C) -1/2% per°C -1/2% per°C -1/2% per°C -1/2% per°C -1/2% per°C -1/2% per°C
T emperature — Storage -40° – 80°C -40° – 80°C -40° – 80°C -40° – 80°C -40° – 80°C -40° – 80°C
Altitude (Meters) — No Derating 2000 2000 2000 2000 2000 2000
Altitude > 2000M -1/2% per °C -1/2% per °C -1/2% per °C -1/2% per °C -1/2% per °C -1/2% per °C
Humidity 95% Non-condensing
Operating Position Vertical ± 30°
Impulse Withstand Voltage IEC 947-4-1 4000V 4000V 4000V 4000V 4000V 4000V
Rated Insulation Voltage (Ui) 660V
Installation Category III
Vibration IEC 68-2-6 3g 10 – 150 Hz
Shock 15g 15g 15g 15g 15g 15g
Degree of Protection IP20 IP20 IP20 IP20 IP20 IP20
Agency Approvals UL, CSA, CE

S751
L01

3.31 3.31 3.31 3.31 3.31 3.31

S751
L02

S751
L04

Figure G-5 (Page G-25

S751
L09

S751
L16

)

S751
L27

January 2003