Integration Notes
The 3RB1262-0LM30: Mounts on S10 or S12 contactor frames — either direct contactor mount or individual mount on a DIN rail via an adapter. Busbar connection for the main circuit means you are not running cable lugs; the busbars carry the motor current through the relay's thermal and magnetic elements. Screw terminals on the aux side accept 0.2-2.5 mm² stranded or solid wire. The ground fault detection circuit is internal — no separate core-balance transformer needed, which saves a DIN slot. Coil supply for the reset/warning logic is AC 220-240 V, 50/60 Hz; verify the control voltage matches your panel before wiring.