Motor Switching Ratings & Coil Circuit
The 3RT2035-3AL20-Z W96 is a size S2 power contactor from the Siemens SIRIUS 3RT2 family, rated for AC-3e/AC-3 motor duty at 41 A and 18.5 kW at 400 V. That AC-3 rating governs switching of squirrel-cage motors — making and breaking locked-rotor current during start, then carrying full-load current. The 41 A frame covers motors up to roughly 18.5 kW on a 400 V three-phase line; for a 230 V supply the kW rating derates proportionally. Auxiliary contacts are 1 NO + 1 NC, spring-loaded terminals for the control circuit. The main circuit uses screw terminals — typical for the S2 frame where higher torque on power connections is expected. The spring-loaded aux terminals speed up control wiring: strip 8–10 mm, push in, done. No screwdriver needed for the aux side.
Lifecycle & Sourcing Posture
RoHS compliance is confirmed effective October 1, 2014, and REACH candidate-list information is available on request. No UL or CSA listing is stated in the record; if your panel requires third-party certification for the assembly, verify the specific approval mark on the nameplate or request the declaration from the supplier.
Panel Integration & Packaging
Package dimensions are 114 x 55 x 130 mm per unit, but note this is multi-unit packaging: the pack quantity is 15 pieces. If you need a single piece for a replacement, order the standard single-pack variant of the base 3RT2035-3AL20 (without the Z W96 suffix). The Z W96 suffix signals the multi-unit bundle, so factor that into your BOM quantity — one line item delivers 15 contactors.