SIRIUS size S00 power contactor, 24 VDC coil
The Siemens SIRIUS 3RT1017-1HB42-ZW98 is a size S00 power contactor with a 24 VDC coil, built for switching motor loads in control panels. It mounts via screw or snap-on onto a 35 mm DIN rail per DIN EN 50022, fitting the standard panel footprint for compact motor starters. Rated for AC-4 duty at 8.5 A at 400 V, this contactor handles the high electrical stress of plugging and inching operations — the most demanding switching category for reversing or jogging motor loads. At 500 V it delivers 5.5 kW, matching a typical 7.5 hp induction motor on a 480 V line.
Coil and auxiliary contact ratings
The DC magnet coil draws 2.3 W both for closing and holding, so the control transformer or power supply must deliver that sustained load without droop. Auxiliary contact ratings span 10 A at 24 V down to 0.3 A at 220 V DC — enough for PLC inputs or pilot lights in the control circuit.
Mounting and environmental fit
IP20 on the front and at the terminals means this contactor is protected against solid objects larger than 12 mm but not against moisture — it belongs inside an IP54 or higher enclosure on a dry panel. Side-by-side mounting is permitted with 6 mm spacing, so you can pack several S00 contactors on a single DIN rail without derating. Operates from -25 °C to +60 °C, covering most factory-floor environments. Pollution degree 3 means it tolerates conductive dust and occasional condensation, typical for industrial control rooms not fully climate-controlled.