Electromechanical & Digital Protective Relays
Replacement protective relays for overcurrent, differential, distance, frequency, and voltage protection. We carry electromechanical, solid-state, and modern digital relay types from all major manufacturers.
Protective Relay Solutions
Circuit Breaker Sales maintains a large inventory of protective relays for every protective function in industrial and utility power systems. From legacy electromechanical relays that are no longer manufactured to modern digital multi-function relays, we can source what you need.
Our technicians can test, calibrate, and recondition relays in our certified shop. We also provide on-site relay testing and commissioning services through our field services team.
Types We Carry
Overcurrent Relays
Time overcurrent and instantaneous overcurrent relays for feeder and transformer protection.
Differential Relays
Current differential relays for transformer, bus, and generator protection.
Distance Relays
Impedance-based relays for transmission line and interconnection protection.
Digital / Multifunction Relays
Modern microprocessor-based relays with multiple protective functions in a single unit.
Brands
Related Services
- Relay testing & calibration
- Protection coordination studies
- Relay replacement programs
- Settings development
- Field commissioning
- Legacy relay sourcing
Need Help?
Our engineers can help you find the right equipment for your application.