METZ CONNECT KRS-E08 3 24 V AC/DC Interface Relay Module, 1 Changeover Contact, 8 A, DIN Rail 110673

In industrial control panels, reliable signal switching between controllers and actuators is critical, yet many standard relays fail to handle mixed AC and DC loads or lack clear status indication. The METZ CONNECT KRS-E08 3 solves this with a compact interface relay module that accepts a universal 24 V AC/DC coil voltage, making it suitable for diverse control circuits. Its 1 changeover contact (SPDT) rated at 8 A can switch loads up to 250 V AC or 30 V DC, covering a wide range of automation tasks.

Who is it for

This relay module is intended for panel builders, system integrators, and maintenance technicians who need a dependable, DIN-rail mountable interface relay for PLC outputs, motor starters, valve control, or general signal amplification. It is especially useful in applications where the control voltage may be either AC or DC, eliminating the need to stock separate relay types.

Main features

• Universal coil: operates on 24 V AC or 24 V DC, simplifying inventory and design.
• 1 changeover contact (SPDT) with 8 A nominal switching current for versatile load handling.
• High switching capacity: up to 250 V AC or 30 V DC, suitable for many industrial loads.
• Clear green LED status indicator for quick visual confirmation of coil energization.
• DIN rail mounting (TS35) for fast installation in standard enclosures.
• Screw terminals provide secure, vibration-resistant wiring connections.
• Compact polyamide housing with IP40 protection (IP20 at terminals) for industrial environments.
• Wide operating temperature range from -25 °C to +70 °C.
• High dielectric strength: 4 kV between coil and contacts for enhanced safety.
• Low power consumption: only 0.5 W (DC) or 0.8 VA (AC).

Specifications

• Product type: Interface relay module
• Control voltage: 24 V AC/DC
• Contact configuration: 1 changeover (SPDT)
• Nominal switching current: 8 A
• Max. switching voltage: 250 V AC / 30 V DC
• Connection type: Screw terminals
• Mounting: DIN rail TS35
• Status indicator: Green LED
• Operating temperature: -25 °C to +70 °C
• Protection class: IP40 (housing), IP20 (terminals)
• Dielectric strength coil/contact: 4 kV
• Power consumption: 0.5 W (DC) / 0.8 VA (AC)
• Housing material: Polyamide (PA)
• Number of poles: 1
• Coil type: AC/DC universal

Tips

When wiring the KRS-E08 3, use appropriate wire ferrules on stranded conductors to ensure reliable screw terminal connections and prevent strand breakage. For inductive loads such as contactors or solenoid valves, consider adding a suppression diode or RC snubber across the load to extend contact life. Always verify that the total load current does not exceed 8 A and that the switching voltage is within the specified limits. The green LED aids troubleshooting—if it is off while the coil is energized, check the coil wiring and supply voltage.