Sizing this reversing contactor into a motor circuit
The 3RA2317-8XB34-1CG6 is a Siemens SIRIUS reversing contactor assembly — two mechanically interlocked contactors in one package, Size S00, that handles forward/reverse control without external interlocks. The AC-4 rating at 400 V is 4 kW — this is the duty cycle for reversing and inching applications where the motor starts and stops under full load, not just the continuous AC-3 figure.
Mounting and panel fit
Depth is 145 mm — confirm the enclosure depth clears this plus wiring space; the assembly can be rotated ±180° on a vertical surface or tilted ±22.5° forward/backward. Clearance around the unit: 6 mm upwards, 6 mm forwards, 0 mm backwards, 6 mm downwards, 6 mm at the side — the zero backward clearance means it sits flush against the mounting surface.
Integrated surge suppression and wiring
Built-in varistor surge suppressor across the coil — no separate suppressor module needed, which saves a DIN rail slot and reduces wiring for reversing applications.
Environmental and compliance
Vibration resistance at AC and DC is 11.4g at 5 ms and 7.3g at 10 ms. RoHS compliance date is July 1, 2006 — the part is RoHS-compliant and meets EU substance restrictions.
Current production — this is an active SIRIUS catalog item, not a legacy or phase-out line. No official successor part number exists because it is the current revision.