The 3RB2066-1MC2: The 630 A rating at 480 V and 600 V covers large motor loads — think 132 to 400 kW AC motors at 500 V, 50 Hz. The electronic release provides temperature-compensated protection across -25 to +60 °C operating range, with vibration resistance to 6-500 Hz at 20 m/s² and shock resistance to 15g / 11 ms.
Mounts directly onto a contactor or as a stand-alone unit in any position. Busbar connection for the main current circuit; main terminals accept M10 bolts. Auxiliary wiring: solid or stranded, 1x (0.5…4 mm²) or 2x (0.5…2.5 mm²) per clamp. Auxiliary switch is integrated — no add-on block needed. Panel footprint: 120 mm wide × 119 mm high × 155 mm deep.
Auxiliary contact ratings & note
The integrated signaling contact carries a note: for message "tripped". Its switching capacity varies by voltage: 2 A at 24 V, 0.55 A at 60 V, 0.3 A at 110 V, 4 A at 120 V, 0.3 A at 125 V, 0.11 A at 220 V, and 3 A at 230 V (–). These are the contact ratings — size the control circuit load accordingly.