The Siemens SIRIUS 3RT2316-2AB00-1AA0 is a Size S00 contactor rated for 4 kW at 400 V in AC-3 duty — that is the motor-switching rating, so it handles a 4 kW three-phase induction motor on a conveyor, pump, or fan without derating. The 9 A rated current at 400 V confirms the thermal capacity for that load. Coil is 24 V AC, 50/60 Hz, drawing 0.25 A at both frequencies.
Standing position on a horizontal surface. Side-by-side mounting allowed — no derating gap needed between units, which matters when packing multiple contactors into a tight panel. Overall dimensions 70 mm high × 45 mm wide × 73 mm deep.
Main current circuit uses spring-loaded terminals; auxiliary switch terminals are also spring-type. Accepts solid 2x (0.5 … 2.5 mm²) and stranded 0.5 … 4 mm² or 2x (0.5 … 4 mm²). Wire sizes AWG 20 … 12 for both main and auxiliary contacts. Two auxiliary contacts are attachable.
Operating temperature range -25 … +60 °C; storage -55 … +80 °C. Relative humidity minimum 10 %. RoHS compliance date 10/01/2009. Lifecycle stage is current production.