Panel fit and mounting constraints
The 3RT2038-1AN24: Its 55 mm width and 114 mm height fit standard 600 mm wide enclosures with room for side-by-side grouping. Depth is 174 mm, which fits standard 200 mm deep enclosures with the door closed.
Motor switching capability and duty cycles
Rated 65 A at 480 V in AC-3 duty (motor switching), this SIRIUS contactor handles motors up to 15 hp at 230 V. Switching cycle rates: 500 operations per hour maximum in AC-3 and AC-3e duty, 700/h in AC-1 (resistive), 350/h in AC-2, and 150/h in AC-4 (plugging/inching). The AC-4 rate is the limiting factor for applications requiring frequent reversing or jogging. Arcing time spans 10 to 20 ms, and the closing/opening time at AC is 10 to 18 ms — fast enough for most motor starter coordination requirements.
Environmental range and coil data
This covers most indoor industrial panel environments without derating at the upper end. Coil consumption at 50 Hz is 0.36 A and at 60 Hz is 0.39 A — the coil draws slightly more at 60 Hz due to the lower inductive reactance. The magnet coil uses screw-type terminals. Auxiliary switch blocks are not included (no auxiliary switch fitted as standard). The main contact arrangement is 18 normally open and 1 normally closed (18 NO / 1 NC).
This is a qualified Siemens SIRIUS contactor suitable for BOM-frozen designs.