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What Size Breaker Is Recommended For The PD4635V Converter  

Updated 01/27/2026 | Published 08/17/2024

Question:

I upgraded to lifepo4 battery as a result I had to upgrade to this converter for charging. My battery has a 40A breaker, that is tripping during charging. What is the recommended battery breaker size for this unit?

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Expert Reply:

Hello Matt. The 40-amp breaker is what Progressive Dynamics recommends for the # PD4635V converter. If the 40-amp breaker keeps blowing this likely means there is something else wrong with your wiring. A short is the most probable explanation so I suggest you inspect your wiring and look for any damaged or frayed wire that may be causing a short.

expert reply by:
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Jesse M
Jesse M. profile picture
Etrailer Expert

Jesse M.

1/27/2026

Hey Matt, did you find what was causing the 40-amp breaker to trip on your PD4635V converter? Knowing what you discovered could help others who run into the same issue.

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