Circuit BreakersThere are 99 products.

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and interrupt current flow. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.

Noark UL489 Mini Circuit Breaker, B1H Series, 5.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

5.0 Amp, 1-Pole, C-Curve, 277 VAC

Out of stock $16.80

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Noark UL489 Mini Circuit Breaker, B1H Series, 6.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

6.0 Amp, 1-Pole, C-Curve, 277 VAC

Out of stock $16.80

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Noark UL489 Mini Circuit Breaker, B1H Series, 8.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

8.0 Amp, 1-Pole, C-Curve, 277 VAC

Out of stock $16.80

View
Noark UL489 Mini Circuit Breaker, B1H Series, 10 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

10 Amp, 1-Pole, C-Curve, 277 VAC

Out of stock $16.80

View
Noark UL489 Mini Circuit Breaker, B1H Series, 13 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

13 Amp, 1-Pole, C-Curve, 277 VAC

Out of stock $16.80

View
Noark UL489 Mini Circuit Breaker, B1H Series, 15 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

15 Amp, 1-Pole, C-Curve, 277 VAC

Out of stock $16.80

View
Noark UL489 Mini Circuit Breaker, B1H Series, 16 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

16 Amp, 1-Pole, C-Curve, 277 VAC

Out of stock $16.80

View
Noark UL489 Mini Circuit Breaker, B1H Series, 20 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

20 Amp, 1-Pole, C-Curve, 277 VAC

Out of stock $16.80

View
Noark UL489 Mini Circuit Breaker, B1H Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 1.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

1.0 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 1.6 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

1.6 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 2.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

2.0 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 3.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

3.0 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 4.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

4.0 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 5.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

5.0 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 6.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

6.0 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 8.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

8.0 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 10 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

10 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 13 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

13 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 15 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

15 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 16 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

16 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 20 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

20 Amp, 2-Pole, C-Curve, 480Y / 277 VAC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1H Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 1.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

1.0 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 1.6 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

1.6 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 2.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

2.0 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 3.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

3.0 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 4.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

4.0 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 5.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

5.0 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 6.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

6.0 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 8.0 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

8.0 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 10 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

10 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 13 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

13 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 15 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

15 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 16 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

16 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 20 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

20 Amp, 3-Pole, C-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1H Series, 1.6 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

1.6 Amp, 3-Pole, B-Curve, 480Y / 277 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1N Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 1-Pole, B-Curve, 240 VAC / 60 VDC

Out of stock $16.80

View
Noark UL489 Mini Circuit Breaker, B1N Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 2-Pole, B-Curve, 240 VAC / 125 VDC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1N Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 3-Pole, B-Curve, 240 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1N Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 1-Pole, C-Curve, 240 VAC / 60 VDC

Out of stock $16.80

View
Noark UL489 Mini Circuit Breaker, B1N Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 2-Pole, C-Curve, 240 VAC / 125 VDC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1N Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 3-Pole, C-Curve, 240 VAC

Out of stock $50.40

View
Noark UL489 Mini Circuit Breaker, B1N Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 1-Pole, D-Curve, 240 VAC / 60 VDC

Out of stock $16.80

View
Noark UL489 Mini Circuit Breaker, B1N Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 2-Pole, D-Curve, 240 VAC / 125 VDC

Out of stock $33.60

View
Noark UL489 Mini Circuit Breaker, B1N Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489 Circuit Breakers

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 3-Pole, D-Curve, 240 VAC

Out of stock $50.40

View
Noark UL489A Mini Circuit Breaker, B1A Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489A Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 1-Pole, B-Curve, 60 VDC

Out of stock $16.80

View
Noark UL489A Mini Circuit Breaker, B1A Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489A Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 1-Pole, C-Curve, 60 VDC

Out of stock $16.80

View
Noark UL489A Mini Circuit Breaker, B1A Series, 0.5 Amp

Replace your UL CLass CC Fuses with these UL489A Circuit Breakers!

Suitable for UL508A Branch Circuit Protection

0.5 Amp, 1-Pole, D-Curve, 60 VDC

Out of stock $16.80

View

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