The Siemens SIRIUS 3RT2316-2AB00-ZX95 is a size S00 contactor rated for 4 kW at 400 V in AC-3 duty, meaning it directly switches three-phase motor loads up to that power. The 24 V 50/60 Hz coil holds in at nominal voltage, with an operating range of 0.8 to 1.1 times rated voltage at 50 Hz and 0.85 to 1.1 at 60 Hz. The IP20 front protection and finger-safe design mean it's suitable for enclosed control panels where accidental contact is a concern.
Integration Notes
For coordination, type 1 coordination requires a 35 A gG fuse at 690 V, 100 kA; type 2 coordination uses a 20 A gG fuse. The operating altitude is rated up to 2,000 m.
The 4 kW rating at 400 V AC-3 is the motor-switching capability — this contactor will start and stop a 4 kW induction motor under full load. The AC-1 maximum switching frequency of 1,000 cycles per hour applies to resistive loads, while the AC-4 rating at 400 V also lists 4 kW, covering plugging and inching duty. The coil draws 24 V at both 50 and 60 Hz, simplifying panel wiring where frequency varies.