Schneider Electric RXM040W Relay Protection Module

Schneider Electric's RXM040W Harmony protection module with diode is a compact accessory for RXM and RPM relays that plugs into RPZ and RXZ sockets. Designed for a 6 to 250 V DC range, it provides reverse-current protection by integrating a blocking diode to shield the control circuit from backfeed and polarity errors, helping to improve reliability in DC coil applications without altering the relay’s switching performance. As part of the Harmony family, the RXM040W is intended for use with Schneider Electric’s electromechanical relays in automation panels, conveyors, and other industrial control schemes that rely on RXM/RPM sockets and DC supplies within the specified range. The module’s diode-based protection ensures safer operation in DC control circuits, reducing the risk of damage from transient conditions and miswiring in compatible RPZ/RXZ socket configurations.