The 3RB1262-0LG00: The 200-820 A current range covers large motor loads — think 150-600 kW induction motors at 400 V. The adjustable class 5-30 lets you match the trip curve to the motor's starting profile: class 5 for short acceleration times on low-inertia loads like pumps, class 30 for high-inertia loads like centrifuges or crushers. The AC 110-120 V control circuit is standard for North American panel voltages; verify your control transformer taps before wiring.
Integration Notes
Mounts directly to S10/S12 contactors via the busbar connection — no additional wiring between contactor and relay. The screw terminals on the auxiliary circuit accept 0.2-2.5 mm² stranded or solid conductors. Ground fault signaling is built in; no external current transformer needed for that function. Panel builders should account for the relay's depth when laying out the enclosure — the S10/S12 frame is a large footprint.