What This Part Is
The Siemens 3RT1935-5AN22 is a SIRIUS magnet coil designed for Size S2 contactors, providing the electromagnetic actuation for the main power contacts. It is a replacement coil, not a complete contactor — you fit it into the contactor frame when the original coil fails or a different control voltage is needed. The coil is rated for 220 V AC control supply, operating at both 50 Hz and 60 Hz without adjustment. The apparent power draw at 50 Hz ranges from 0.8 to 1.1 A — this is the inrush-to-hold characteristic typical of AC-operated contactor coils, not a steady-state figure.
Mounting & Integration
The coil uses spring-loaded connection technology for the control wiring — strip length and ferrule sizing matter more here than with screw terminals. The terminal arrangement matches the SIRIUS Size S2 contactor base; the coil slides onto the magnet stack and locks in place without tools. No DIN-rail work is needed if you are replacing a coil in an existing contactor.