Lectron Short Circuit or Severe Overload

Lectron charger trips the house breaker immediately or within a few seconds of starting a charge.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Shorted main power contactor, Pinched or shorted output conductors inside Lectron housing, Incorrect breaker size or wiring fault in supply circuit

How to Fix / Troubleshooting

Safety first: Repeated breaker tripping indicates a potentially dangerous fault. Do not keep resetting the breaker.

  • 1. Visual inspection: With breaker OFF, remove the Lectron cover and look for obvious shorts: melted insulation, bare conductors touching the enclosure, or burnt components.
  • 2. Check cable entry: Ensure the cable jacket is intact where it passes through the cable gland and that no copper is exposed.
  • 3. Verify breaker and wiring: Confirm that the breaker size and wire gauge match Lectron installation requirements. If unsure, have a licensed electrician inspect the circuit.

Resolution: If any internal components appear damaged or if the breaker trips even with the vehicle disconnected, the Lectron unit likely has an internal short. Replace the main power contactor, damaged wiring, or the entire EVSE as appropriate. Involve a qualified electrician or EVSE technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Lectron Main Power Contactor / Internal Wiring Harness
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