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Split Charging Relay Module - AB Tools - TR447

Split Charging Relay Module - AB Tools - TR447

A professional 20A split charging relay designed for charging caravan batteries and powering carav...

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Product Information

Full details

This guide provides essential information for using the AB Tools TR447 Split Charging Relay Module. Designed for 12V vehicle electrical systems, it allows you to charge caravan batteries and power your fridge while driving. Note that correct wiring and fusing are crucial for safe and effective operation.

All features

Model Part NumberTR447
BrandAB Tools

Extended Product Information

FAQs

What is the purpose of the split charging relay?

The split charging relay allows your car to charge your caravan battery and power your caravan fridge while you are driving.

What voltage systems is this relay compatible with?

This relay is designed for use with 12V electrical systems.

What is the maximum current this relay can handle?

The maximum continuous current is 20A.

Does this relay require professional installation?

While the connections are straightforward, some users may prefer professional installation to ensure proper wiring and safety.

Where is this product made?

This product is made in the UK.

What is the function of the ignition terminal?

The ignition terminal is connected to an ignition-switched 12V supply, so the relay only operates when the car's engine is running, preventing battery drain.

How do I ensure the relay is working correctly?

Check for voltage at the output terminals when the ignition is on and confirm the caravan battery is charging.

Troubleshooting

Caravan battery not charging.

Check the fuse on the positive battery terminal of the relay. Verify the ignition-switched feed is working. Confirm all wiring connections are secure.

Fridge not receiving power.

Check the connections to the fridge. Verify the relay is receiving power from the ignition and that the correct terminal is connected to the fridge.

Relay not activating.

Ensure the ignition feed is providing 12V when the ignition is on. Check the ground connection.

Pros and Cons

Pros

  • Charges caravan batteries while driving.
  • Powers caravan fridges from the tow vehicle.
  • Prevents vehicle battery drain when the engine is off.
  • Made in the UK, ensuring quality.

Cons

  • Requires proper wiring and fusing for safe operation.
  • Professional installation may be required for some users.
  • Limited to 20A continuous current.

Setup, Compatibility & Care

Setup

  1. Connections:
  • Connect the 12V terminal to the positive battery terminal via a suitable fuse.
  • Connect the ignition terminal to an ignition-switched +12V supply.
  • Connect the 6 terminal to pin 6 of the 12S socket (switched 12V supply).
  • Connect the 4 terminal to pin 4 of the socket (permanent 12V supply).
  • Connect the 2 terminal to pin 2 of the socket (switched 12V supply).
  • Connect the 0V terminal to earth.
  1. Fusing: Always use appropriate fuses in line with the current draw.

Compatibility

  • Compatible with all cars that have a 12V electrical system.
  • Ensure that your caravan and fridge are also 12V compatible.

Care

  • Regularly inspect the wiring connections for corrosion or damage.
  • Check the fuses periodically and replace them if necessary.
  • Protect the module from excessive moisture and extreme temperatures.

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