The 3RT2336-3XB40-4LA2: The main contacts are rated 52 A at both 480 V and 600 V in AC-3 duty — that is the motor-switching current that governs the largest load this Size S2 contactor can handle across common North American line voltages.
Spring-clamp terminals and DIN rail snap-on — panel fit without the screwdriver torque
Physical envelope: 55 mm wide, 114 mm high, 130 mm deep. The depth number matters when the gland plate is tight — 130 mm is the dimension behind the DIN rail, so budget that into the enclosure depth before the door closes.
Coil draw and switching endurance — what the DC coil needs and how long it lasts
The DC coil is rated 24 V with an inrush peak of 3 A and a hold-in sealed current of 0.7 A initial, stepping to a 1.25 A full-scale value — the inrush spike matters for the DC supply sizing if several contactors pick up simultaneously. Mechanical endurance is 10 million operating cycles typical, and the maximum switching rate in AC-4 duty (plugging / inching) is 250 operations per hour — the arcing time per break is 10 to 20 ms, and the DC operating time is 30 to 55 ms.