DC Circuit Breakers | McMaster-Carr

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389 Products

Circuit Breakers

DIN-Rail Mount Equipment Circuit Breakers

Also known as supplemental protectors, these circuit breakers mount directly to DIN rail downstream from a branch circuit breaker to protect a single piece of equipment.

DIN-Rail Mount Branch Circuit Breakers

Mount these circuit breakers directly to DIN rail to protect equipment and wiring in an area of your facility from overloads and short circuits.

DIN-Rail Mount Electronic Circuit Breakers

An electronic trip mechanism makes these circuit breakers fast, precise, and consistent. They continuously monitor current and trip at a precise value compared to the much wider current range in traditional thermal-magnetic breakers.

DIN-Rail Mount Ground Fault Circuit Protectors

Add ground fault protection to a circuit to minimize the risk of electric shock to workers and equipment if there is a current leak.

Square D Load-Center Circuit Breakers

Match these circuit breakers to Square D breaker boxes or panel boards of the same manufacturer series.

Panel-Mount Equipment Circuit Breakers

Mount these breakers, also known as supplemental protectors, through panels downstream from a branch circuit breaker to protect a single piece of equipment.

High-Temperature Panel-Mount Circuit Breakers

Unlike breakers that trip thermally, these breakers have a hydraulic-magnetic trip mechanism, so they aren’t affected by changes in temperature.

Harsh-Environment Circuit Breakers

Built to resist vibration and corrosion in harsh environments, these circuit breakers protect against overload and short circuits in low-voltage automotive and other electronic applications.

High-Power Circuit Breakers

Protect an area of a facility that has high-powered equipment using up to 600V AC or 750V DC and 600A of current.

Blade-Style Circuit Breakers

Protect against overload and short circuits in low-voltage automotive and other electronic applications.