250 Series DIN-Rail Protector Relays

Crompton Instruments manufactured Protector Trip Relays: Single and Three-Phase Protector Trip Relays offering continuous surveillance of electrical parameters with adjustable set point limits, differentials and time delay settings. Units provide an alarm or initiation signal when the measured parameter moves outside the set point limit.


250 Series - AC Current w adjustable Time Relay 250 Series - Combined Under and Over-Voltage and Frequency