Siemens 3RT5066-6AF36 — SIRIUS S10 Power Contactor, 197 kW at 400 V
The Siemens 3RT5066-6AF36 is a SIRIUS S10 frame power contactor rated for motor loads up to 197 kW at 400 V at 60 °C, with an insulation voltage of 1 000 V. The contactor measures 210 mm high by 145 mm wide by 202 mm deep and is fixed via screw mounting. This is the 110–127 V AC 50/60 Hz coil variant, drawing 6 A at 24 V rated value and 6 A at 230 V rated value. Pollution degree 3 rating means it handles conductive pollution environments typical in industrial control panels.
Switching Performance and Duty Ratings
Electrical switching frequency varies by duty: AC-1 maximum 750 operations per hour, AC-3 and AC-3e maximum 500 operations per hour, AC-4 maximum 130 operations per hour. General AC and DC switching is rated at 2 000 operations per hour. The AC-3e rated maximum voltage is 1 000 V, matching the insulation voltage. This covers the 690 V rating where the contactor delivers 112 kW, and the 400 V 60 °C rating of 197 kW. Auxiliary contact ratings: 6 A at 24 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, 3 A at 400 V.
Minimum permissible conductor cross-section is 185 mm² at both 40 °C and 60 °C, sized for the full rated current.