The Siemens 3RT1017-1VB42 is a SIRIUS power contactor in Size S00, built for switching motor loads in control panels. It mounts on a 35 mm DIN rail per DIN EN 50022, with a 45 mm width and 72 mm depth that fits standard enclosure layouts. The 24 V DC coil draws 1.4 W holding power, and the integrated diode surge suppressor handles the inductive kickback without external wiring.
Motor duty and coordination
Rated for AC-2 duty at 5.5 kW on 400 V, this contactor handles slip-ring motor reversing and plugging. For AC-4 (inching, plugging, jogging) it carries 8.5 A at 400 V. Type 1 coordination requires a 35 A gL/gG fuse; Type 2 coordination needs a 20 A gL/gG fuse. The pollution degree 3 rating means it's suited for industrial environments with conductive dust or condensation.
Termination and wiring
Screw-type terminals on both main and auxiliary circuits. Main contacts accept 2x (0.5 to 1.5 mm²) solid, 2x (0.75 to 2.5 mm²) stranded, or up to 2x 4 mm² max. Auxiliary terminals match. AWG equivalents: 2x (20 to 16) solid, 2x (18 to 14) stranded, or 1x 12. Side-by-side mounting is supported without derating — zero gap between units on the rail.
Sourcing note
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time. This is a standard fast mover in the SIRIUS line — keep it on the shelf if you maintain panels with 24 V DC control.