AS-Interface motor starter for distributed control
The 3RK4320-3JQ54-0BA3: The CLASS 10 bimetal overload relay means it trips fast enough to protect standard squirrel-cage motors during a stall or jam — the bimetal element tracks the motor's thermal curve without a separate overload block.
Panel fit and mounting flexibility
Envelope is 205 mm deep by 245 mm wide by 215 mm high — a compact footprint for a combined starter with bus communication and brake output. IP54 protection means it handles dust and splashing water — suitable for dry indoor industrial environments but not washdown zones.
Control supply and brake output
Control supply is 24 V DC nominal (20.4 to 26.4 V range) — standard for industrial panels — and the unit includes a motor brake output for 400 V AC brakes, saving an external contactor for the brake coil. Two digital inputs are available for local pushbuttons or limit switches, reducing the need for separate I/O modules at the motor. Operating frequency is rated at 80 operations per hour minimum — this is a process-duty starter, not a high-cycling application like a rapid-indexing conveyor.
Lifecycle and sourcing
RoHS compliance date is May 1, 2012 — the design predates later substance restrictions but meets the 2012 deadline for the original RoHS directive.