Circuit Breaker Trip Units, Relays, and Test Sets

Whether you need new or used circuit breaker trip units, relays, or test sets, or you need yours repaired, Circuit Breaker Sales can help.
Our expansive inventory of electrical equipment includes reconditioned and surplus circuit breaker trip units, relays, and test sets, as well as trip unit rating plugs. We stock trip units from all major manufacturers.
Manufacturers include:
- Gerin
- Gould
- ITE
- Merlin
- Siemens
- Square D
- Westinghouse
Trip Unit Repair Services
Our team repairs and calibrates electronic circuit breaker trip units for hundreds of customers, including many of the circuit breaker manufacturers. We can service, repair, and test molded-case circuit breakers, insulated-case circuit breakers, low-voltage power circuit breakers, and medium-voltage air circuit breakers.
Repair services include:
- Repair of multifunction relays
- Repair of secondary test sets
- Repair of power supplies
- Repair of ground fault relays
- Repair of solid-state trip units for circuit breakers

We also offer reproduction services for printed circuit boards.
If you need electronics repair services, we can get your operations up and running with quality, reliable, and on-time repair.
