240.89 Replacement trip units
What changed in 240.89
Replacement trip units now have to be listed for the breaker they are installed in.
Point by point
- A replacement trip unit has to be listed for use in that specific circuit breaker.
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Get the whole breakdown
- One more point on exactly what changed
- The 2020 rule next to the 2023 rule, side by side
- Why it changed
- What to do and check on the job
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This section across NEC® editions
2020 NEC®No change
This section did not change from 2017 to 2020.
2023 NEC®RevisedYou're here
Replacement trip units now have to be listed for the breaker they are installed in.
2026 NEC®No change
This section did not change from 2023 to 2026.
More 2023 changes in Article 240
This is a plain-English summary, not the NEC®'s exact wording. Always check the full section in the NEC® edition your area has adopted, plus any local amendments.
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