Crompton FREQUENCY PROTECTOR COMBINED OVER AND UNDER FREQUENCY, SPECIFICATION. PSC SPECIAL
Crompton 253-PHD4-000087, SPECIFICATION. PSC SPECIAL, INPUT. 115 VOLTS AC., RELAY OUTPUT WITH VOLT FREE CONTACTS, FREQUENCY. 400 HERTZ., RELAY Over EnergizeUnder Energize******, OPTION. NO TIME DELAY (STD)






