It carries a 110 V DC coil with spring-type terminals — no screwdriver needed for the coil connection, which saves a few minutes per panel when you're wiring a row of these. The main contacts are rated 52 A at both 480 V and 600 V, so it handles 3-phase motors in that current class without derating across common North American line voltages. Mechanical life is listed at 10 million operations, and the AC-4 switching rate maxes out at 250 cycles per hour — that's the heavy-duty jogging or reversing duty cycle, not just continuous run.
Coil and switching characteristics
DC coil rated 110 V with an inrush current peak of 1.5 A. Switching time at DC is 30 to 55 ms; arcing time runs 10 to 20 ms. The auxiliary switch is present, so you can use it for status feedback or interlocking without adding a separate block. The coil hold-in is solid across the operating temperature range — the 0.7 initial value and 1.25 full-scale value suggest a wide pickup/hold margin, which matters if your DC supply sags under load.