Schneider Electric RZM021RB Relay Protection Module

Product Description

The SCHNEIDER ELECTRIC RZM021RB is a relay protection module designed to safeguard relay coils from voltage spikes and transient surges in control circuits. Operating across a wide input range of 6 to 24 volts AC or 6 to 24 volts DC, this module mounts directly into compatible relay sockets to provide passive coil protection without additional wiring. It is a compact, single-unit component suited for HVAC control panels, building automation systems, and industrial control applications where relay longevity and circuit protection are priorities. Licensed control system technicians and electrical contractors typically specify and install this module as part of relay socket assemblies.

This protection module is intended for use in relay socket installations where transient suppression is required at the coil level. It fits directly into RGZ sockets used with the RXG relay series and RSZ sockets used with the RSB relay series, making it applicable in low-voltage control circuits operating within the 6 to 24 VAC or 6 to 24 VDC range. Typical installations include commercial HVAC control panels, fan coil unit controllers, and building management system relay banks where coil protection extends relay service life and reduces nuisance failures.

Key Features

• Operates on 6 to 24 volts AC and 6 to 24 volts DC for broad control circuit compatibility
• Direct socket-mount design eliminates additional field wiring
• Compatible with RGZ sockets for RXG series relays and RSZ sockets for RSB series relays
• Compact footprint at 1.4 inches length x 0.5 inches width x 0.3 inches height
• Single-unit packaging suitable for individual relay socket installations

Compatibility

Designed for use with RGZ sockets for the RXG relay series and RSZ sockets for the RSB relay series, as specified by the manufacturer.

Installation Notes

Installation is performed by a licensed electrician or qualified control systems technician. De-energize and lock out the control circuit before handling any relay socket components. The module seats directly into the relay socket -- confirm socket type matches the RGZ or RSZ series before installation. Follow applicable NEC low-voltage control wiring requirements for the installation environment.