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Square D > On-line Catalog > Products > NEMA Contactors and Starters > Combination Starters—NEMA Rated: Thermal Magnetic Circuit Breakers

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Combination StartersNEMA Rated

Thermal Magnetic Circuit Breaker

Class 8539 / Refer to Catalog 8538CT9701

3-Pole Polyphase—600 Vac Maximum—50–60 Hz

NEMA
Type 1
General
Purpose
Enclosure
NEMA
4 & 4X
Watertight
and Dusttight
Enclosure
Stainless Steel (304)
(Sizes 0–5)a
NEMA 4 & 4X
Watertight
Dusttight
and Corrosion
Resistant
Polyester Enclosure
NEMAs 7 & 9
For Hazardous Locations
Class I, Groups C & D
Class II, Groups E, F & G
(Cast Aluminum)
Division 1 & 2
NEMA 12/3Rc
Dusttight and Driptight
Industrial Use
Enclosure
Motor
Voltage
(Starter
Voltage)
Max.
Hp
Poly-
phase
NEMA
Size
SPIN TOP®
Type
Bolted
Type b
With
External
Reset
Without
External
Reset
Ampere
Rating
460
(480)
  5 
  15
  7-1/2
 10 
  20
  25
 15 
 20 
 25 
  40
  60
  70
 30 
 40 
 50 
  80
  90
 100
 60 
 75 
100 
 110
 125
 200
125 
150 
200 
 225
 250
 350
250 
300 
350 
400 
 450
 600
 600
 800
500 
600 
 900
575
(600)
  5 
  15
 7-1/2
 10 
  15
  20