The Siemens 3RT1017-2BA41 is a SIRIUS power contactor in the compact Size S00 frame, designed for switching loads up to 10 A at 24 V rated value. The 24 VDC coil draws 3.3 W both on closing and holding, so the control transformer sizing is straightforward — no inrush peak to over-spec for.
Mounting and wiring
Snaps onto 35 mm DIN rail per DIN EN 50022, or can be screw-mounted. The spring-loaded terminals on the main current circuit accept 2x (0.25 to 2.5 mm²) solid or stranded — no screwdriver torque check needed, which speeds up panel wiring. Side-by-side mounting is allowed with 6 mm spacing at the side, so the 45 mm width per unit stays tight on the rail.
Coordination and protection
For Type 2 coordination (no damage to the contactor on a short circuit), Siemens specifies a gL/gG fuse rated 20 A. For Type 1 coordination (contactor may need replacement after fault), a 35 A gL/gG fuse is allowed. The IP20 rating on the front and terminals means it's protected against finger contact — standard for enclosed panel installation.
Environmental limits
Rated for operation from -25 °C to +60 °C, with a maximum operating altitude of 2 000 m. Pollution degree 3 (conductive pollution or dry non-conductive that becomes conductive under condensation) — typical for industrial control panels not in a climate-controlled clean room.
Lifecycle and sourcing
The manufacturer lists this part as current production. It is sourced and quoted to order against an RFQ through independent distribution.