Pole of a circuit breaker with an integrated optical current...

Portable calibrator for d.c. circuit breakers

Portable circuit interrupter shutoff testing device and method

Portable circuit interrupter tester and method

Portable test apparatus for low current circuit breakers

Portable tester for electronic circuit breaker

Power relay or switch contact tester

Power supply controller apparatus for detecting welding of...

Process and device for automatically detecting the response volt

Programmable controller system with failure indicator

Protective device with end-of-life indication before power...

Protective relay test device

Protective relay test device

Protective relay test device having a hand-held controller