Application Fit
The 3RB1246-1QM20: This relay mounts individually for S00/S0 contactor frames — typical in motor control centers and panel builds where the overload sits directly under the contactor. The 6.3...25 A range covers small to medium motor loads (pumps, fans, conveyors). The ground fault detection function is non-standard on basic overloads; this relay signals ground faults via monostable outputs, useful for leakage monitoring on ungrounded or IT systems. Screw terminals on the aux circuit match standard panel wiring practices.