The 3RA2336-8XB30-1AC2 is a SIRIUS reversing contactor assembly — two 3RT2036-1AG20 contactors mechanically interlocked in a single housing, so it handles motor forward/reverse without external interlocks or extra panel space for two separate contactors. The 52 A rating at 480 V and 600 V means the same assembly covers 460–600 V motor circuits without derating the current. The AC-4 rating at 400 V is also 22 kW — that's the plugging/inching duty cycle. If the application does frequent reversing under load (crane travel, conveyor indexing), the AC-4 figure governs contact life, not the AC-3 number.
Mounting and terminal capacity
Mounts on 35 mm standard DIN rail with screw and snap-on fastening. Dimensions are 141 mm high, 120 mm wide, 130 mm deep — the S2 contactor frame size. The 130 mm depth includes the coil terminals; allow clearance for the screwdriver access on the coil side.
The lifecycle stage is marked as current — this is an active-production part from Siemens, not a legacy or phase-out line. It's sourced through authorized distribution; availability and pricing are confirmed against the BOM quantity at RFQ time. The assembly ships with two 3RT2036-1AG20 contactors pre-interlocked. If one contactor fails in the field, the replacement is the same 3RT2036-1AG20 — no special reversing-only part needed for the swap. Mechanical life is rated at 10,000,000 operating cycles typical — that's the contactor mechanism, not the electrical contacts under load.