The Schneider Electric LC1E40B01N5 is an Easy TeSys contactor, a 3-pole (3 NO) unit rated for 40 A in AC-3 utilisation category at voltages up to 440 V. It is fitted with a 415 V AC coil. This part is now obsolete, so sourcing it means going through the surplus and broker channel.
At 440 V, 40 A AC-3 covers motors roughly up to 18.5 kW (depending on power factor and service factor). The AC-3e and AC-1 ratings on the same part give you headroom for lightly inductive or resistive loads, but the AC-3 number is the one that governs motor duty. The 415 V AC coil means it is designed for a 400 V class control supply — common in European and Asian industrial panels running 380-415 V three-phase. If your control voltage is 230 V or 24 VDC, this coil will not pull in.
