What this reversing contactor assembly is
The Siemens 3RA2316-8XB30-2AH0 is a SIRIUS-brand reversing contactor assembly — a pre-wired pair of contactors with mechanical interlock that reverses a three-phase motor without external wiring. It ships with two 3RT2016-2AH02 contactors inside the assembly. Size S00 frame means it fits a 90 mm wide footprint on 35 mm standard mounting rail, with screw and snap-on fastening.
Termination and wiring capacity
Main current circuit uses spring-loaded terminals — no screw tightening, just push the stripped wire in. The magnet coil also uses spring-type terminals, consistent across the assembly. Dimensions: 84 mm high, 90 mm wide, 83 mm deep. Clearance requirements: 6 mm upwards, 6 mm downwards, 6 mm at the side, 6 mm forwards, 0 mm backwards — the back can sit flush against the panel backplate.
Environmental and mechanical endurance
Shock resistance rated at 10.5g / 5 ms and 6.6g / 10 ms for both AC and DC axes — suitable for industrial environments with vibration from nearby machinery. Mechanical life of the contactor typical is 10,000,000 operations — the reversing assembly's interlock and contactors share this endurance. RoHS compliance date is 10/01/2009, covering EU substance restrictions.
Sourcing and lifecycle reality
The supplied contactors (3RT2016-2AH02) are standard Siemens catalog items, so replacement contactors or coil spares are straightforward to source separately if needed.