METZ CONNECT Coupling Module 2-Wire KRA-M8/21-21 24DC (11061925)

For industrial control systems that demand reliable signal isolation without sacrificing space, the METZ CONNECT KRA-M8/21-21 24DC coupling module stands apart. Unlike bulky interface relays that crowd the cabinet, this slim DIN-rail unit integrates an M8 sensor input and a relay output in one compact housing, cutting wiring time and reducing potential failure points.

Highlights

• 24 V DC supply with M8 3-pin A-coded connector for quick sensor hookup
• 1 normally open relay contact for galvanic isolation of signals
• Switches up to 250 V AC / 30 V DC at 2 A, handling both control and small load circuits
• Low 0.2 W power consumption keeps thermal load minimal in dense panels
• Tool-free DIN rail TS35 mounting with IP20 protection for control cabinet use

In daily use

This module functions as a signal interface between a 24 V DC sensor or PLC output and a higher-voltage or higher-current load. The M8 connector accepts standard 3-pin sensors, while the screw terminals on the output side accommodate field wiring up to 2.5 mm². The relay contact is rated for both AC and DC loads, making it suitable for solenoid valves, contactors, indicator lamps, or as an input to another controller. With a switching frequency suitable for most industrial processes, the module maintains stable operation from -20 °C to +70 °C. The polyamide housing resists common industrial chemicals and provides basic touch protection.

Full specifications

• Brand: METZ CONNECT
• Model: KRA-M8/21-21 24DC
• MPN: 11061925
• EAN: 4250184122722
• Product type: Coupling module / interface module
• Supply voltage: 24 V DC
• Input connection: M8 connector, 3-pin, A-coded
• Output connection: Screw terminals
• Number of channels: 1 (2-wire signal)
• Switching element: Relay
• Contact type: 1 NO (normally open)
• Max. switching voltage AC: 250 V AC
• Max. switching voltage DC: 30 V DC
• Max. switching current: 2 A
• Max. switching power AC: 500 VA
• Max. switching power DC: 60 W
• Power consumption: 0.2 W
• Mounting: DIN rail TS35
• Protection class: IP20
• Operating temperature: -20 °C to +70 °C
• Housing material: Polyamide (PA)
• Approvals: CE

Final note

A space-saving, reliable coupling module that bridges the gap between low-level sensor signals and higher-power control circuits, all in a DIN-rail-ready package.