METZ CONNECT KRA-SRA-F10/21 Power Relay Grey 10A 21V DC PCB Mount 11071013

For switching loads up to 10 A with a compact PCB footprint, the METZ CONNECT KRA-SRA-F10/21 stands out among general-purpose relays. Its 1 Form A contact set and 21 V DC coil make it a direct fit for control circuits that need a reliable, through-hole mounted switching element. The grey housing keeps board layouts tidy and identifiable.

Highlights

• 1 NO contact (SPST) rated for 10 A at 250 V AC
• 21 V DC coil with low power consumption (~0.36 W)
• PCB mount, through-hole technology with 4 pins
• AgNi contact material for long electrical life
• Dielectric strength 4000 V AC between coil and contacts
• Wide operating temperature range: -40 °C to +85 °C
• Approvals: VDE, UL, CSA

In daily use

This relay is a practical choice for industrial controls, building automation, and appliance switching. The normally open contact handles resistive loads up to 2500 VA, and the mechanical endurance of 10 million operations means it can cope with frequent cycling. The 21 V DC coil suits systems with 24 V DC supplies where a series resistor or direct drive is used.

Full specifications

• Product type: Power relay
• Series: KRA-SRA
• Contact configuration: 1 Form A (1 NO)
• Rated switching current: 10 A
• Rated switching voltage: 250 V AC
• Coil voltage: 21 V DC
• Coil type: DC
• Mounting type: PCB mount (through-hole)
• Number of pins: 4
• Contact material: AgNi
• Dielectric strength (coil-contact): 4000 V AC
• Switching power (resistive load): 2500 VA
• Mechanical life: 10 x 10^6 operations
• Electrical life: 100,000 operations (at rated load)
• Operating temperature range: -40 to +85 °C
• Insulation resistance: 100 MΩ (at 500 V DC)
• Coil power consumption: approx. 0.36 W
• Approvals: VDE, UL, CSA
• Colour: Grey

Final note

METZ CONNECT builds this relay for dependable switching in compact spaces. If your board needs a 10 A relay with a 21 V DC coil and proven approvals, the KRA-SRA-F10/21 is a solid pick.