SIRIUS S0 Power Contactor with 220 VDC Coil
Rated for continuous duty, the DC coil pulls in at 80 % of rated voltage (176 V) and holds at 110 % (242 V), giving a reliable pick-up margin for long cable runs where voltage drop is a concern. Switching frequencies range from 1 000 operations per hour in AC-1 resistive duty down to 250 per hour in AC-4 plugging/reversing service — the AC-3 motor-switching rate of 750 ops/h covers most conveyor and pump cycles.
Switching Capacity by DC Voltage
For DC load switching, the contactor's rated operational current drops with voltage: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, and 0.3 A at 220 V. At 400 V DC it manages 3 A. These are the make-and-break limits for resistive DC loads — inductive loads need additional arc suppression or derating.
The contactor occupies a 45 x 102 x 107 mm envelope (W x H x D). Power and control wiring accepts solid or stranded conductors from 1 to 10 mm², with double ferruled strands down to 2x 0.5... 2.5 mm². The spring-type coil terminals reduce wiring time compared to screw clamps — no torque driver needed.
Environmental Range and Lifecycle
Arcing time on break is 10... 10 ms, and the DC dropout delay runs 15... 17.5 ms — relevant when sequencing contactors in a star-delta or reversing starter. No end-of-life notification or successor part is recorded on this order code.