Cranford Controls

R12 Auxillary Relay Units 12Vdc

Product Overview

The R12 relay is intended to switch addtional field devices via the two relay outputs supplied. An LED is mounted so that it remains visible during the relay operation.

The supply voltage to the relay coil may be continued through the device via the additional terminals supplied. Each device is reverse polarity protected.


  • PCB version for mounting inside PSU’s, panels, etc.
  • Self contained version in a metal enclosure
  • Single gang plate version has ‘Auxiliary Relay Operated’ text


Type PCB Surface mount
Voltage range (Vdc) 9 – 18
Nom. current consumption (mA)  44
Relay contact rating 230Vac 5A
Coil impedance (?)  275
Protection rating n/a IP43
Boxed weight (kg) 0.051 0.15
Colours available n/a white

Part Numbers

503-004 “Auxiliary Relay Operated” text, single gang, surface
503-005 PCB only, supplied with 4 adhesive feet