74 A AC-3 switching – the motor rating that matters
The J7KN74230 is a 3-pole, 3NO contactor from Omron's J7KN series, rated for 74 A switching current in AC-3 duty. That 74 A translates to a 37 kW motor load at 400 V – the number a panel builder checks first when sizing a contactor for a pump or conveyor drive. Coil voltage is 230 V AC, so it lands directly on a standard control transformer secondary without a dropping resistor or interposing relay.
Mounting and termination – DIN rail or screw, screw terminals
Mounts on standard DIN rail or direct with screws – the same part covers both panel layouts. Screw terminals throughout; no push-in or spring-cage option on this variant. Wires up clean with ring or fork lugs torqued per the nameplate value. The 3NO main contacts handle the power legs; no auxiliary contact block is included in this order code, so add one if the PLC needs a feedback signal.