METZ CONNECT RM 21/21 230VAC Interface Relay Module with LED, 2 CO Contacts, DIN Rail 11050705

In industrial control systems, reliable signal isolation and amplification are critical to protect sensitive PLC outputs and drive higher loads. The METZ CONNECT RM 21/21 230VAC relay module solves this by providing a compact, DIN-rail mountable interface with two changeover contacts and a clear LED status indicator. It bridges the gap between low-power control circuits and actuators such as contactors, valves, or motors, ensuring dependable switching in demanding environments.

Who is it for

This interface relay module is ideal for panel builders, system integrators, and maintenance engineers who need a robust, space-saving solution for control cabinet installations. It suits applications in building automation, machine building, and process control where 230 VAC coil voltage is standard and visual feedback is required.

Main features

• Two changeover (CO / DPDT) contacts for versatile switching
• 230 VAC control voltage with green LED indicator for clear status
• Rated contact current of 6 A and switching capacity up to 1500 VA
• DIN rail TS35 mounting for quick installation
• Screw terminals for secure and maintenance-friendly wiring
• Compact polyamide housing with IP20 protection

Specifications

• Product type: Interface Relay Module
• Contact configuration: 2 CO (DPDT)
• Control voltage: 230 VAC
• Rated contact current: 6 A
• Rated contact voltage: 250 VAC/DC
• Max. switching capacity: 1500 VA
• LED indicator: Green
• Mounting: DIN rail TS35
• Connection: Screw terminals
• Operating temperature: -20 °C to +60 °C
• Storage temperature: -40 °C to +85 °C
• Protection class: IP20
• Housing material: Polyamide PA 6.6
• Contact material: AgNi (Silver Nickel)
• Rated impulse withstand voltage: 4 kV
• Rated insulation voltage: 250 V
• Dielectric strength (coil/contact): 4 kV
• Mechanical life: 10^7 switching cycles
• Electrical life: 10^5 switching cycles (at rated load)

Tips

Ensure the coil voltage matches your control circuit to avoid malfunction. For inductive loads, consider using a freewheeling diode or RC snubber to protect the contacts and extend relay life. Always verify wiring before applying power and observe local electrical codes.