ABB SPAJ 140 C Combined Overcurrent And Earth-Fault RelayDescription The ABB SPAJ 140 C is a combined overcurrent and earth fault protection relay widely used in medium voltage distribution networks. It provides selective fault detection and tripping functions, ensuring system stability and equipment safety. Specifications Model: SPAJ 140 C Relay Type: Overcurrent and earth fault protection relay Nominal Frequency: 50 60 Hz Rated Current Inputs: 1 A 5 A Auxiliary Supply Voltage: 80265 V AC 1880 V DC