Panel fit and dimensions — 205 mm depth, 245 mm width
The 3RK4320-3AQ54-1BA2 measures 205 mm deep, 245 mm wide, and 215 mm high — these are the envelope dimensions for panel cutout and clearance planning.
The electromechanical switching contacts handle the inrush without the leakage concerns of solid-state alternatives. Operating frequency is rated at a minimum 80 operations per hour, with demand rates of 50% (low) and 75% (high) per SN 31920 — sufficient for typical start/stop cycles in material handling or pump control.
AS-Interface bus integration and control wiring
This motor starter communicates via AS-Interface protocol — a two-wire bus that carries both power and data, reducing field wiring to a single flat cable. It supports 2 digital inputs for local pushbuttons or sensor feedback, and includes a motor brake output (24 V DC) for holding applications on vertical axes or conveyors. The control supply voltage is 20.4...26.4 V DC, standard for 24 V control loops. Short-circuit protection is designed for circuit-breakers upstream — coordinate the branch circuit protection per the manufacturer's selectivity tables. The 3-pole main current circuit connects directly to the motor; no additional contactor is needed for reversing duty.
Environmental ratings and compliance
IP54 protection means the enclosure is dust-protected and splash-proof — suitable for indoor industrial environments but not washdown zones. The operating voltage is 340...440 V, 50/60 Hz, matching standard 400 V class supplies globally.