S2 frame, 55 mm — panel fit for a 65 A motor circuit
The 3RT2037-1AV04: Rated 65 A at 480 V in AC-3 duty, this is the contactor that switches a 30–40 hp motor at 480 V three-phase without an auxiliary contactor for the coil — the magnet coil draws 6 A at 24 V, which a standard PLC output can drive directly.
Mounting and clearances — DIN-rail snap-on with side gap 6 mm
Side clearance is 6 mm to adjacent components; upwards and forwards clearance is 10 mm each.
Switching duty and mechanical life — 10 million cycles typical
Mechanical life is 10 million cycles typical; the maximum switching rate at AC-3 is 700 operations per hour, so it sustains a cycling load like a conveyor start-stop sequence without accelerated wear. Arcing time is 10 to 20 ms at AC, and the dropout time is 10 to 18 ms — the coil drops out fast enough that a downstream safety relay sees the NC mirror contact open within one mains cycle.