The Siemens SIRIUS 3RT5036-1AM00 is a size S2 power contactor rated for motor loads up to 38 kW at 400 V 60 °C and 66 kW at 690 V 60 °C. The S2 frame keeps it at 55 mm wide and 112 mm tall, fitting standard panel layouts without surprises.
The 38 kW at 400 V 60 °C rating tells you this contactor handles a 3-phase induction motor up to that power without derating at elevated cabinet temperature. The 66 kW at 690 V 60 °C covers higher-voltage drives. For short-circuit coordination, the manufacturer specifies a gL/gG 80 A fuse — that's the upstream protection to clear a fault before the contactor welds. The 6 kV rated surge voltage resistance gives it a solid margin for industrial networks with switching transients.
The screw-type main terminals accept 2x (0.75…16 mm²) solid or stranded, or 2x (18…2) AWG.