Products Coming Soon
Products Coming Soon
Showing Results
Show Filter
RS Breakers & Controls carries a comprehensive inventory of new, used-tested, and obsolete miniature circuit breakers (MCBs) from every major manufacturer. As Canada’s largest supplier of circuit breakers, we have the selection and expertise to get you what you need fast. All previously used units are tested to ANSI and CSA standards with a detailed test report and full 2-year warranty.
A miniature circuit breaker (MCB) is a compact electrical protection device designed to automatically switch off the circuit when it detects an overload or short circuit. Among the most common type of circuit breakers in residential and light commercial applications, MCBs typically handle current ratings up to 125A. Unlike fuses, these circuit breakers can be easily reset after tripping, making them a convenient and cost-effective solution. MCBs use thermal-magnetic trip mechanisms — a bimetallic strip responds to sustained overloads while an electromagnetic solenoid reacts instantly to short circuit currents.
Miniature circuit breakers are the backbone of residential and commercial electrical protection across Canada. RS Breakers & Controls maintains one of Canada’s largest in-stock inventories of circuit breakers, including hard-to-find obsolete models from discontinued manufacturers like Federal Pioneer and Challenger.
Our like-for-like replacement approach means you get a direct swap that fits your existing panel without costly modifications. Every used-tested circuit breaker we sell undergoes rigorous ANSI-standard testing and ships with a comprehensive test report and 2-year warranty.
Contact RS Breakers & Controls at sales@rsbreakers.com or call 905-501-1510. We ship from our Mississauga, Saskatoon, and Calgary warehouses.