About Circuit Breakers

Littelfuse Circuit Breakers

A circuit breaker is a device designed to protect an electrical circuit from damage from overheating, overloading, or short circuiting. It acts like an invisible switch that automatically opens up or turns off the flow of electricity when the circuit is overloaded or the load has reached a certain level. This prevents electrical components in the circuit from being damaged or even bursting into flames. Circuit breakers are typically used in circuit protection applications and are found in most households and all businesses. Circuit breakers come in different sizes, ratings and types depending on the application. They can be manually reset or may also be self resetting, meaning that when the fault has been cleared, the circuit breaker will automatically reset itself and resume normal operation. Circuit breakers have become a standard part of electrical wiring, and are used in industrial, commercial and residential settings.

Circuit Breakers

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(Ex. GST)(▲▼)		Enter Qty SeriesProductTypeCurrent RatingVoltage Rating ACVoltage Rating DCNumber of PolesActuator TypeMinimum Operating TemperatureMaximum Operating TemperatureIlluminatedPackaging
  
                
30171-30


Circuit Breakers CIR_BRKR 30A 24V MEL HWD
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse 209
Ships to you
between Thu. 30 May to Mon. 03 Jun Calender.png

USD 10.6923
Multiples of: 1

 Circuit BreakersAuto Reset30 A 24 VDC1 Pole   Not IlluminatedBulk
BUCB010.Z


Circuit Breakers 10A CBK Universal Circuit Breaker
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse 184
Ships to you
between Thu. 30 May to Mon. 03 Jun Calender.png

USD 7.007
Multiples of: 1

UCBCircuit BreakersModified Reset10 A 12 VDC1 Pole   Not IlluminatedBulk
30056-50


Circuit Breakers CIR_BRKR 50A 12V MET HWD
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse 129
Ships to you
between Thu. 30 May to Mon. 03 Jun Calender.png

USD 17.238
Multiples of: 1

 Circuit BreakersBox Style Circuit Breaker50 A 12 VDC    Not IlluminatedBulk
BUCB015.Z


Circuit Breakers 15A CBK Universal Circuit Breaker
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse 127
Ships to you
between Thu. 30 May to Mon. 03 Jun Calender.png

USD 6.7914
Multiples of: 1

UCBCircuit BreakersModified Reset15 A 12 VDC1 Pole   Not IlluminatedBulk
30055-20


Circuit Breakers CIRCUIT BREAKER 12V 2
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse 125
Ships to you
between Thu. 30 May to Mon. 03 Jun Calender.png

USD 10.1193
Multiples of: 1

 Stud Type Circuit BreakersBox Style Circuit Breakers20 A  2 Pole   Not IlluminatedBulk
30138-30


Circuit Breakers CIR_BRKR 30A 12V MET BRK HN11
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse 106
Ships to you
between Thu. 30 May to Mon. 03 Jun Calender.png

USD 11.9437
Multiples of: 1

 Circuit BreakersBox Style Circuit Breaker30 A 12 VDC    Not IlluminatedBulk
30171-10


Circuit Breakers CIR_BRKR 10A 24V MEL HWD
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse 103
Ships to you
between Thu. 30 May to Mon. 03 Jun Calender.png

USD 10.517
Multiples of: 1

 Circuit BreakersBox Style Circuit Breaker10 A 24 VDC    Not IlluminatedBulk
30055-15


Circuit Breakers CIR BRKR,15A,12V,MET,BRK,HWD
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse 97
Ships to you
between Thu. 30 May to Mon. 03 Jun Calender.png

USD 10.1193
Multiples of: 1

 Stud Type Circuit BreakersBox Style Circuit Breakers15 A  2 Pole   Not IlluminatedBulk
30137-15


Circuit Breakers CIR BRKR15A12VMELHWDHN11
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse 95
Ships to you
between Fri. 24 May to Thu. 30 May Calender.png

USD 7.4098
Multiples of: 1

 Circuit BreakersBox Style Circuit Breaker15 A 12 VDC    Not IlluminatedBulk
0UCB005.X


Circuit Breakers 5A
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Littelfuse 91
Ships to you
between Thu. 30 May to Mon. 03 Jun Calender.png

USD 9.8438
Multiples of: 1

UCB Universal5 A 12 VDC1 PoleSelf - Reset  Not IlluminatedBulk
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