High‑speed six‑circuit auxiliary switching relay for power‑plant turbine & substation control loops. ...

Electromechanical residual‑current protective relay for power‑system earth‑fault monitoring and tripping. ...

High‑speed electromechanical protective relay for power‑system phase‑to‑ground fault monitoring. ...

Electromechanical reverse‑power protection relay for steam turbine generator motoring‑fault monitoring. ...

Three‑zone electromechanical protective relay for overhead transmission‑line phase fault protection. ...

High‑speed non‑directional fault‑detecting relay for circuit‑breaker failure backup protection. ...