DC Circuit Breakers | McMaster-Carr

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389 Products

Circuit Breakers

DIN-Rail Mount Equipment Circuit Breakers

Protect a piece of equipment downstream from a branch circuit breaker

113 products

Square D Load-Center Circuit Breakers

Match to Square D breaker boxes or panel boards of the same manufacturer series

28 products

DIN-Rail Mount Branch Circuit Breakers

Safeguard equipment and wiring in an area of your facility

106 products

High-Power Circuit Breakers

Protect an area of a facility that has high-powered equipment

16 products

Harsh-Environment Circuit Breakers

Resist vibration and corrosion in harsh environments

31 products

Panel-Mount Equipment Circuit Breakers

Mount through panels to protect a single piece of equipment

34 products

Blade-Style Circuit Breakers

Protect low-voltage automotive and electronic applications

37 products

DIN-Rail Mount Electronic Circuit Breakers

Continuously monitor current and trip at a precise value

11 products

High-Temperature Panel-Mount Circuit Breakers

The hydraulic-magnetic trip mechanism is not affected by temperature changes

9 products

DIN-Rail Mount Ground Fault Circuit Protectors

Minimize the risk of electric shock to workers and equipment if there is a current leak

6 products