The 3RK4320-3NQ54-1BA3: The AS-Interface bus interface and two onboard digital inputs let this starter integrate directly into an AS-i network without a separate gateway module — the reversing logic and overload reset can be commanded over the bus, which saves a remote I/O slice in the panel. The control supply is 20.4–26.4 V DC, so it shares the same 24 V DC bus as the AS-i power supply and most PLCs.
Mounting, environment, and brake control — panel fit and field constraints
The enclosure measures 205 mm deep by 245 mm wide by 215 mm high. It mounts on a vertical surface with ±180° rotation possible and can be tilted forward/backward by ±22.5° — useful when fitting into a crowded panel where the cable entry angle needs adjustment. IP54 means it is protected against dust ingress and splashing water, so it suits machine-mounted enclosures in factory-floor environments but not washdown zones. The starter includes a motor brake output and supports 400 V AC brake control, so it can drive a brake directly on the motor cable for holding applications like conveyors or hoists.