SIRIUS contactor, size S00 — spring terminals, 9 A AC-3
It carries a rated operational current of 9 A at 400 V in AC-3 duty, translating to a 4 kW motor switching capacity at 400 V — the figure that determines fit for a standard three-phase induction motor. The coil is AC-operated at 48 V, 50/60 Hz. Spring-type terminals on both the main current circuit and the coil simplify wiring and reduce installation time — no screw torque to verify, just strip and insert. The contactor accepts solid conductors from 2x 0.5 to 2.5 mm² and stranded from 0.5 to 4 mm² on the main circuit.
AC-3 rating and thermal design
The 4 kW rating at 400 V AC-3 covers the majority of small motor applications — pumps, fans, conveyors up to that shaft power. Power dissipation in the hot operating state is 4.4 W at AC, which matters for thermal management in a densely packed panel. Clearance and creepage distances are specified: 6 mm at the side, 10 mm upwards, downwards, and forwards. The rated impulse withstand voltage of the main circuit is 6 kV.
The contactor complies with RoHS Directive 2011/65/EU, with a substance prohibition date of October 1, 2009. It carries the usual CE marking for the European market; UL and CSA listings are standard for the SIRIUS range but are not explicitly recorded in this data set.
The auxiliary switch block is attachable (up to 2 units), using spring-type terminals consistent with the main circuit. Wire sizes for auxiliary contacts are 20–12 AWG solid or stranded. Operating times: closing time 7–13 ms at AC, arcing time 10–15 ms. The mechanical service life is typical 30 million operations for the contactor itself. Relative humidity minimum during operation is 10%, and the contactor is rated for use in standard industrial environments without special coating.