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Why is There a Warning on Break Away Cable to Avoid Disconnection for More than 20 Minutes  

Question:

Warning label says do not leave plunger disconnected for more than 20 minutes. What damage can be caused by this?

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Expert Reply:

When the plunger of a breakaway switch like # 3802348 is pulled the battery in the breakaway system will be connected to the trailer brake circuit. This is how a breakaway system stops a trailer if there is a disconnect between it and the tow vehicle.

By law a breakaway battery has to be able to keep the trailer's electric brakes fully engaged for at least 15 minutes.

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Adam R

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