Schneider Electric RHN422B Relay

The RHN422B is a plug-in, instantaneous Harmony relay from Schneider Electric, engineered for compact control panels and fast field replacement, with four Form-C contact paths integrated into a single, small footprint module that snaps into compatible Harmony bases. Each Form-C contact provides both normally open and normally closed states, and the coil operates at 24 V DC, enabling interfacing with standard PLC outputs and 24 V control circuits common in industrial automation. Rated to 1 A per contact, the RHN422B supports four independent switching channels, allowing multiple signals or small loads to be managed from one relay without extending panel depth. Part of Schneider Electric's Harmony RHN family, the device is designed to deliver reliable actuation in environments that require a compact, modular approach to control and interlocking tasks in machine automation and panel-mounted control systems.