Breakaway Kit Parts

$4.20 - $28.06

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Breakaway Kit Parts Incl 5ah Battery, Switch and 12v/5A Battery

The Breakaway Trailer Brake Kit is mandatory for all trailers over 2000 kg GTM. Should the tow vehicle and trailer separate accidentally, the breakaway kit engages the electric brakes at full power for a minimum of 15 minutes.

Shipping: We cannot send this product via Express Post services due to the battery not being accepted by airlines. 

Rubber Boot Cover

Rubber boot covers for breakaway kits are essential to help keep water our of the switch contacts.

In heavy rain, water often enters the switch and creates a short circuit within the switch, causing the brakes to engage.

It is essential to check the brakes to see if you feel the trailer is breaking in heavy rain events.


Remove the pin and shake the switch. This may remove the problem.

Reinsert the pin and listen for the magnet to engage. If the agent does not engage the brakes with the oin inserted, you have cleared the problem and can continue your journey.

Caravan and Trailer onboard Battery Kit

Note; it is essential to note that there is no requirement for an independent, designated or separate breakaway battery system.

In other words, the caravan or camper onboard 12v battery is the breakaway battery provided it can apply 12vdc to your electric brakes.

Further, the onboard caravan battery will be larger than the minimum requirement and have the same or larger capacity than the smaller unit.

The breakaway switch activates the trailer brake system for 15 minutes in cases where the trailer was detached from the vehicle when travelling.

Additionally, included in the price is a rubber boot that fits over the breakaway switch. The rubber boot reduces or prevents water ingress.

Installing Breakaway Battery Magnetic Monitor.

  • Connect the battery indicator cable directly to the breakaway battery, insert the 10 amp fuse inline and close to the battery.
  • If the battery indicator flashes RED, only the breakaway battery is low on amp hour.
  • If the Battery indicator does not illuminate, recharge or replace the breakaway battery.
  • The battery indicator will switch off when the battery is lower than 11 to 9 volts.
  • The battery indicator draws low milliamps and will continually pulsate different flashing colours on a battery for 12 months.
  • Recharge the battery using a battery charger if the breakaway battery is flat.


Disconnect the trailer plug when testing the breakaway kit. Failure to do so may severely damage the vehicle’s Electric brake controller.

5A – 12V Replacement Battery to suit Breakaway Kit.

5A means five amps or 5 x 12 = 60 watts for one hour

The battery should be large enough to power four magnets @ 3.2Amp each for 15 minute

How do I tell when the battery requires replacement?

Your breakaway battery will require replacement when you cannot get a green light on your control panel.

Replacement Breakaway Switch Kit option Waterproof Rubber Cover

A breakaway switch does not prevent water ingress into your breakaway switch.

Water and dirt enter the switching mechanism making it inoperable. As a result, replace the switch.

A boot cover greatly assists in the prevention of water into the breakaway switch.

Shorten the breakaway switch lanyard for effective braking when your caravan is on its safety chains.

Finally, all trailers over 2000kg require a breakaway system.

Additional information

Breakaway Kit Parts

Breakaway Switch Wire and Pin, Boot Cover, Breakaway Battery 5ah, Remote Breakaway Kit Monitor, Complete Breakaway Kit


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