METZ CONNECT KRA-M8/21-21 Power Relay White (11061905)

Switching electrical loads reliably is a constant challenge in industrial control systems. The METZ CONNECT KRA-M8/21-21 power relay solves this by providing a robust, plug-in solution for switching up to 8 A at 250 V AC with two changeover contacts. Its compact white housing and 24 V DC coil make it ideal for a wide range of automation and building technology applications.

Who is it for

This relay is intended for engineers, electricians, and system integrators who need a dependable switching component for control panels, PLC outputs, or general purpose load switching. It is particularly suited for applications requiring a plug-in relay with a standard octal socket, allowing quick replacement and maintenance.

Main features

• Two changeover contacts (DPDT) for versatile switching
• Rated switching current of 8 A and voltage up to 250 V AC
• 24 V DC coil with low power consumption of only 0.53 W
• Plug-in mounting with 8 pins for standard relay sockets
• Silver nickel (AgNi) contacts for long electrical life
• High dielectric strength: 5000 V AC between coil and contacts
• Wide operating temperature range from -40°C to +70°C
• Mechanical life of 10 million operations

Specifications

• Product type: Power relay
• Coil voltage: 24 V DC
• Contact configuration: 2 changeover contacts (DPDT)
• Rated switching current: 8 A
• Rated switching voltage: 250 V AC
• Number of pins: 8
• Mounting type: Plug-in (for socket)
• Contact material: Silver nickel (AgNi)
• Max. switching power (AC): 2000 VA
• Max. switching power (DC): 240 W
• Dielectric strength (coil/contacts): 5000 V AC
• Dielectric strength (open contacts): 1000 V AC
• Operating temperature range: -40°C to +70°C
• Mechanical life: 10^7 cycles
• Electrical life: 10^5 cycles (at rated load)
• Coil power consumption: 0.53 W
• Color: White
• Series: KRA-M8

Tips

For optimal performance, use a compatible relay socket with screw terminals and ensure the coil voltage matches your control circuit. The plug-in design allows for quick replacement without rewiring. When switching inductive loads, consider using a suppression diode or RC snubber to protect the contacts and extend relay life.