Square D Digest 179
NEMA and Definite Purpose Contactors and Starters
Selection Information
www.se.com/us
Selection Information
Class
8539&8739
8903L & 8903S
8903
8910, 8911, 8965
8940
8941
Combination Devices
Definite Purpose non reversing contactors available as compact 1 or 2poleto40Aand2to4 pole to 90 A. Reversing and Starter Configurations also available.
Multipole electrically held and mechanically held contactors available in 30 A configurations to 12 poles and 800 A configurations to 3 poles.
NEMA Style AC Duplex Motor Controllers available as a combination starter orwithout disconnecting means.
Type S lighting contactors electrically held and mechanically held available with disconnect switches or PowerPact™ circuit breakers
Well-Guard Control™ Pumping Plant Panels available with disconnect switches or PowerPact™ circuit breakers.
16 NEMA AND DEFINITE PURPOSE CONTACTORS AND STARTERS
Combination Magnetic Starters with PowerPact™ Circuit Breaker
Type of Product
8910: page 16-90 8911: page 16-93 8965: page 16-100
8539: page 16-52 8739: page 16-69
page16-94 page16-95
page16-75
page16-78
page16-96
Page
8539: 0–7 8739: 0–6
NEMASizes
N/A
N/A
N/A
1–7
1–4
Load Voltage
600 Vac Max.
600 Vac Max.
600 Vac Max.
600 Vac Max.
600 Vac Max.
600 Vac Max.
300 A (Disconnect) 600 A (Circuit Breaker)
20–40 A (Compact)
8539: 18–810 A 8739: 18–540 A 8539: 0.5–600 8739: 0.5–400
8903L to 30 A 8903S to 800 A
Current Ratings (Continuous)
27–810A
27–135A
20–90A
Horsepower Ratings (Maximum)
N/A
N/A
0.5–50
0.5–600
0.5–100
Melting Alloy Bimetallic (Size0–1) Solid State
N/A
N/A
Melting Alloy (8911)
Melting Alloy Bimetallic Solid State
Melting Alloy Bimetallic Solid State
Overload Relay
1, 3R, 4, 4X, 12/3R and Open
1, 4, 4X, 12/3R and Open
Enclosure Types
1, 4, 4X, 12/3R
1, 4, 4X, 12/3R
1
3R
UL File E152395 NKJH7 UL File E78427 NRNT UL File E16151 NRNT
UL E3190 NLDX2 CSA LR25490 Class 3211 04
UL/cUL 152395 NKJH UL File E152395 NKJH7
Approvals
CSALR584 Class 3211 04
CSA LR60905 Class 3231 01
cUL File E16151 NRNT
16-3
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