Solid-state overload relay for motor protection
The Siemens 3RB2153-4FW2 is a SIRIUS solid-state overload relay in size S6, rated for 200 A operational current and adjustable trip classes from 5E to 30E. Thermal current rating of 200 A means it handles motor starting inrush up to 3.5× the upper current setting; the trip class adjustment lets you match the relay to the motor's start profile. Auxiliary contacts provide a dry signal for 'tripped' status.
Mounting and wiring notes
Mounts directly on a contactor or as a stand-alone unit using the S6 frame; any mounting position allowed. Terminals accept 1x (0.5–4 mm²) or 2x (0.5–2.5 mm²) solid/stranded copper; proper torque ensures reliable connection for the 200 A circuit. Dimensions 120 mm wide, 119 mm high, 155 mm deep – fits standard panel layouts for size S6 motor starters.
Compliance and environmental ratings
RoHS-compliant per substance prohibition date July 1, 2006; shock tested to IEC 60068-2-27 at 15 g / 11 ms, vibration tested 1–6 Hz / 15 mm and 6–500 Hz / 20 m/s² for 10 cycles. Operating ambient -25 to +60 °C, storage -40 to +80 °C; the electronic design compensates for temperature across the range. Sourced to order – submit an RFQ with your quantity and target lead time for a firm quote.