SIRIUS Size S10 Contactor with 110 V DC Coil
It is equipped with an auxiliary switch and uses a 110 V DC coil, which dictates the control circuit voltage required for the panel. The contactor is fastened via screw fixing, which is the standard method for bolting it to a mounting plate or rail adapter in an enclosure. Dimensions are 210 mm height, 145 mm width, and 202 mm depth, so it occupies a Size S10 footprint typical for this current class.
Switching Performance and Duty Ratings
The full-scale overload factor is 1.25, meaning the contactor can handle 25% overcurrent for short durations without damage. Switching frequency varies by duty category: up to 700 operations per hour at AC-1 (resistive), 500/h at AC-3 (squirrel-cage motor starting/running), and 130/h at AC-4 (plugging/inching). For DC loads, it's rated 350/h at DC-1 and 250/h at DC-3 and DC-5. These numbers define the thermal cycling limit — exceeding them accelerates contact wear. DC switching ratings are specified per voltage: 6 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, and 0.9 A at 125 V. These are the maximum continuous currents the contacts can make and break in DC circuits, where arc extinction is harder than AC. For motor starting (AC-3), the contactor is sized by the motor full-load current, not these DC figures.
Conductor cross-section accepted is 2x (0.25 to 2.5 mm²) solid or stranded, which covers standard control wiring up to 14 AWG. The mounting hole is 11 mm diameter, single hole, for screw fixing to the panel.