The 3RB3036-2UW1: The thermal current rating of 50 A holds at both 480 V and 600 V, so it covers the common North American motor voltages without derating. The auxiliary signaling contact is integrated and rated for 2 A at 24 V, 4 A at 120 V, and 3 A at 230 V — enough to drive a PLC input or a contactor coil directly.
The relay mounts stand-alone (no DIN-rail adapter required) and accepts any mounting position. At 55 mm wide, 81 mm tall, and 109 mm deep, it fits into a standard panel footprint without crowding adjacent components.
Terminals accept 1× (0.5 to 4 mm²) or 2× (0.5 to 2.5 mm²) solid or stranded copper. The screwdriver specification calls for a Pozidriv PZ2 tip with a shaft diameter of 5 to 6 mm — a standard electrician's Pozidriv driver, not a slotted or Phillips bit. The note for message 'tripped' indicates that the signaling contact 97/98 changes state when the relay trips, giving a dry-contact indication to the control system.