The 193-CBCT2 is a 40mm core balanced E3 PLUS ground fault sensor, essential for ground fault protection when used with E1 PLUS modules or ground fault-jam modules. It is required for ground fault protection in conjunction with 193-EC3 and -EC5 overload relays, compatible with 100-C09-C97 IEC starters. Factory warranty does not apply, but includes a 2-year Radwell warranty.