The coil is 100 V AC, and the auxiliary contact block includes 1 NO.
The 6 A AC-3 rating at <=440 V is the headline motor-switching current — it tells you this contactor can start and stop a 3-phase induction motor drawing up to 6 A under full-load running conditions. For a 400 V supply, that corresponds roughly to a 3 kW motor (4 HP). The AC-4 rating covers the more severe duty of reversing or jogging while the motor is already under load, so if your application cycles direction frequently (conveyor reversals, crane travel), the contactor is rated for that stress. The IP20 finger-safe enclosure (per VDE 0106) means it is safe for panel mounting without additional shrouding — the terminals are protected against accidental contact by a standard test finger.
