The Siemens SIRIUS 3RT2037-1AL20-ZX95 is a Size S2 power contactor rated for 65 A at 480 V AC-3 duty — that's the motor-switching current, so it handles a 65 A inductive load without welding the main contacts. The coil terminates at screw-type terminals, and an auxiliary switch is built in, saving a separate add-on block on the DIN rail. Clearances: 10 mm upward, forward, and downward; 6 mm at the sides — that's the minimum air gap to adjacent metalwork.
Wire range: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded for the main contacts. The coil draws 0.36 A at 50 Hz and 0.39 A at 60 Hz — a standard 24 VDC control transformer handles that without oversizing.