Guardian Breaker Nuisance Trip

Frequent nuisance tripping of generator main breaker at moderate loads.

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.

Possible Causes

Weak or aged breaker, Loose connections causing heat, Harmonic-rich loads, Undersized breaker for actual load

Safety first: Open the main breaker and de-energize the generator before tightening or replacing components.

Check load level: Confirm that the total load does not exceed the Guardian generator's rated amperage.
Tighten lugs: Tighten all connections on the breaker and output lugs to manufacturer torque specs.
Breaker replacement: Replace a breaker that trips at currents well below its rating, using the exact Guardian-specified part.
Load management: Consider staggering large motor loads or installing load-shedding controls.

Medium 3/5

Main Circuit Breaker

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