METZ CONNECT KRA-M6/21 Power Relay White (11061505)

In industrial control cabinets and building automation systems, the METZ CONNECT KRA-M6/21 power relay handles switching tasks reliably. This plug-in relay with a white housing is designed for applications where a 24 V DC coil controls a single changeover contact rated for 6 A. Installers and panel builders appreciate its compact 5-pin socket mount, which simplifies wiring and replacement.

Key specifications

• Coil voltage: 24 V DC
• Contact configuration: 1 changeover (SPDT)
• Rated switching current: 6 A
• Rated switching voltage: 250 V AC / 30 V DC
• Max. switching capacity: 1500 VA (AC) / 180 W (DC)
• Contact material: AgNi (silver nickel)
• Insulation voltage coil/contact: 4 kV AC
• Dielectric strength open contacts: 1 kV AC
• Operating temperature: -40 °C to +70 °C
• Mechanical life: 20 million operations
• Electrical life at rated load: 100,000 operations
• Mounting: plug-in / socket mount, 5 pins
• Coil power consumption: 0.36 W

Why choose it

This relay offers a robust AgNi contact that withstands high inrush currents, ensuring long service life in demanding environments. The 4 kV insulation between coil and contacts provides safe isolation for control circuits, while the wide temperature range makes it suitable for outdoor or unheated installations. Its low coil power consumption reduces heat generation and energy costs.

Ideal use cases

• Switching lighting loads in building automation
• Controlling small motors or valves in HVAC systems
• Interface between PLC outputs and higher power circuits
• General purpose relay applications in industrial machinery

Good to know

The relay is plug-in, so it can be replaced without rewiring. A suitable socket (not included) is required for mounting. The white housing clearly distinguishes it from other relay types in the cabinet. Always verify coil polarity for DC operation.