TEC3M split charge relay

Towbar electrics Charge relay TEC3M

10 days
USD $ 10.93
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Towbar electrics Charge relay TEC3M


Split charge relay

Wiring info as follows

12v Permanent fused live

0v Earth

2 Pin 2 in the 12s socket (grey)

6 Pin 6 in the 12 socket (grey)

4 Pin 4 in the 12s socket (grey)

High Output Combination Caravan Relay with automatic monitoring and switching of supply from car to caravan through double (split charge) relays.


  • Very compact but powerful efficient design, giving the largest output in the smallest package
  • Automatic monitoring of voltage and current availability from car’s alternator/battery
  • No separate signal wire necessary
  • Able to switch up to 30a continuously when available from car’s alternator/battery
  • Adjustable factory set voltage trip with narrow band hysteresis
  • Over temperature protection
  • Line voltage drop compensation
  • Low voltage drop (around 0.1v) at rated output
  • Very high quality micro miniature 30a relays
  • Fully snubbed for EMC compliance



Is a very simple device which manages charging a leisure battery from the vehicle electrics (alternator). Can be used for up to 30 Amp current, and is easy to install. Would be great if there was a whole for attaching this device with a screw to any installation. Since there is no such attachment provision, the relay only can be affixed with Velcro or double tape.
First class product direct replacement
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Hi, Please can you help? On the TEC3M Relay do I have to run 2 seperate fused wires from the battery to the 12v terminals. I require to charge the caravan battery and run the fridge. Regards Martin

Asked by M Lane | 17/08/2015, 21:01 | 1 answer(s)