SIRIUS S2 Power Contactor for Motor Loads
Its headline rating is 65 A at 480 V in AC-3 duty — the motor-switching category per IEC 60947-4-1 — meaning it handles induction motors up to roughly 50 hp at that voltage without welding the main contacts during starting inrush. The coil is 24 VDC, terminated at screw-type terminals, and the contactor carries an auxiliary switch block (18...1 configuration) for status feedback to the PLC or safety circuit. Mechanical life is rated at 10 million operations typical, with electrical endurance varying by duty: 700 cycles/hour at AC-1 (resistive), 500 at AC-3 (motor start/run), and 150 at AC-4 (plugging/reversing). The S2 frame footprint is 55 mm wide, 114 mm tall, and 130 mm deep — a compact envelope for a 65 A motor-rated contactor that fits standard 600 mm deep enclosures with room for wiring gutters.
These are the minimum air gaps to adjacent metalwork or other devices for heat dissipation and arc containment. Wire termination: the main power terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded copper — sized for the control wiring and auxiliary contacts, not the main power lugs (which are typically larger on an S2 frame). The coil terminals are screw-type, compatible with ferruled stranded wire for reliable connection in high-vibration environments.
Environmental Range
Operating temperature: -25 to +60 °C. Storage temperature: -55 to +80 °C. The contactor is rated for indoor use in a standard industrial enclosure; no IP rating is listed on this record, so it requires panel protection from dust and moisture.