A relay socket is a wiring base that mounts to a control panel or DIN rail and provides pre-configured screw terminals for field wiring, into which a plug-in relay is inserted and removed without disturbing the panel wiring itself. Schneider Electric's Zelio RXZ series sockets are purpose-matched to their RXM plug-in relay line, with each socket's pin count and contact arrangement corresponding to a specific relay contact configuration (2 changeover contacts or 4 changeover contacts).
Industrial automation panel builders, motor control system integrators, and maintenance electricians rely on Schneider relay sockets wherever relays need to be field-replaceable without re-wiring — the socket stays permanently wired into the panel while the relay itself plugs in and can be swapped in seconds if it fails, without a technician needing to disconnect and reconnect individual wires. Sockets are offered with either 'separate' contact terminal arrangement (inputs and outputs on separate sides of the socket) or 'mixed' arrangement (inputs and outputs mixed on both sides), letting panel designers choose the wiring layout that best fits their panel's physical routing.
Common configuration: 8-pin sockets for RXM2 relays (2 C/O contacts), 11-pin and 14-pin sockets for RXM4 relays (4 C/O contacts), rated operational voltage under 250V AC, thermal current ratings of 10-12A depending on model, screw clamp or screw terminal connections accepting wire gauges from roughly 0.25mm² to 2.5mm² (AWG 22-17), flat pin shape, IP20 enclosure protection, DIN rail (35mm symmetrical) or panel screw mounting, and an operating temperature range of -40°C to 55°C. CE and CSA certifications are standard across the RXZ range.
Quick-Reference Spec Glossary
- Number of pins
- 8-pin, 11-pin, or 14-pin depending on relay compatibility
- Contact terminal arrangement
- Separate (inputs/outputs on separate sides) or mixed (both sides)
- Relay compatibility
- RXM2 (2 C/O contacts) or RXM4 (4 C/O contacts) plug-in relays
- Rated operational voltage [Ue]
- < 250V AC
- Thermal current [Ith]
- 10-12A depending on model
- Connection type
- Screw clamp or screw terminal, wire gauge 0.25-2.5mm² (AWG 22-17)
- Mounting type
- Clip-on 35mm symmetrical DIN rail or panel screw mount
- Enclosure/environmental rating
- IP20, -40°C to 55°C operating range