S2 frame, 3-pole, 690 V AC-3 — the panel builder's take
The Siemens 3RT7037-1AM00 is a SIRIUS S2-frame contactor, 3-pole normally open, rated for AC-3 and AC-3e switching up to 690 V maximum. The screw terminals on both main and auxiliary circuits accept 2x 0.5–2.5 mm² solid or ferruled stranded — standard panel wire, no special lugs needed. Front protection is IP20 — fingersafe for the operator side. The terminal area is IP00, meaning the wiring compartment needs enclosure protection from the panel builder. Pollution degree 3 (conductive or dry non-conductive pollution) suits industrial control cabinets not in a clean room.
Coordination and fuse sizing
These are the values for the main circuit — coordination data that saves a coordination study when the panel is already fused at those levels.
