It is rated AC-3 ≤ 440 V at 12 A for switching three-phase induction motors in forward/reverse duty, and also carries AC-1 and AC-4 utilisation categories for resistive loads and plugging/inching respectively. The 24 V AC coil keeps control circuit design straightforward in panels where 24 VAC is the standard. IP20 finger-safe terminals (per VDE 0106) mean it mounts inside an enclosure without additional shrouding.
The AC-3 rating of 12 A at ≤ 440 V is the number that decides motor fit — it tells you this contactor can switch a 3-phase motor drawing up to 12 A in the forward/reverse direction under full load. AC-4 (plugging/inching) is more demanding on the contacts, so if your application cycles the motor in reverse while it is still spinning, check that the actual motor current stays within the AC-4 curve. The 24 V AC coil draws from a control transformer; verify the VA burden against your transformer rating. The preassembled reversing busbar saves panel wiring time — the mechanical interlock is built in, so both contactors cannot close simultaneously.
The IP20 terminals accept screw-clamp wiring. The preassembled reversing busbar is mechanically interlocked and electrically bused for the reversing circuit.