WiremanWireman · Breaker won’t reset or won’t latch: troubleshooting for electricians · 2023 NEC ·
Breaker won’t reset or won’t latch
The handle won’t stay on, snaps back or feels loose. Find out if it’s the circuit or the breaker.
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How it works
Breakers are “trip free”: the latch inside lets go on an overload or fault even if someone holds the handle on. After a trip the handle usually rests in a middle position, and the mechanism has to be pushed all the way to OFF to reset before it will latch ON again. If it latches and snaps back at once, something on the circuit is still drawing fault current, or the breaker itself has failed.
Every question and answer in this guide. Tap “Step by step” to walk through it.
- What happens when you try to reset it?
- Handle sits in the middle and won’t go onPush the handle firmly all the way to OFF until you feel a click, then to ON. Does it hold?
- Yes, it holds nowThe breaker just needed a full reset
- It still won’t latchDid it trip after a heavy load ran for a long time? Wait 5 to 10 minutes and try again.
- It holds after coolingAn overload trip that needed to cool
- Still won’t latch, or it wasn’t a heavy loadUnplug everything and turn off every switch on that circuit, then reset it. Does it hold?
- Holds with everything offA faulted appliance, cord or fixture on the circuit
- Still trips or won’t latchTest: Test the circuit wiring for a shortExpect: OL (open) or a very high reading on both.
- Near 0 Ω on either readingA short in the circuit wiring
- Some ohms (roughly 5–200 Ω)Something is still connected to the circuit
- OL (open) on bothThe breaker has failed
- It goes on, then trips right awayUnplug everything and turn off every switch on that circuit, then reset it. Does it hold?
- Holds with everything offA faulted appliance, cord or fixture on the circuit
- Still trips or won’t latchTest: Test the circuit wiring for a shortExpect: OL (open) or a very high reading on both.
- Near 0 Ω on either readingA short in the circuit wiring
- Some ohms (roughly 5–200 Ω)Something is still connected to the circuit
- OL (open) on bothThe breaker has failed
- Handle is floppy, no spring at allTest: Inspect the breaker and its bus stab
- Breaker looks broken or burned, stab is cleanThe breaker has failed
- Bus stab is pitted, dark or meltedA burned bus stab
- Breaker is a different brand than the panelA breaker that isn’t listed for this panel
- It has a TEST buttonAn AFCI, GFCI or dual-function breaker that’s seeing a fault
- Handle sits in the middle and won’t go onPush the handle firmly all the way to OFF until you feel a click, then to ON. Does it hold?