Can I Replace Old WFCO Or Progressive Dynamics Standalone Converter With New PowerMax Unit? AC to DC

Updated 01/13/2026 | Published 01/07/2026

Products Featured in This Question

PowerMax AC to DC Converter w/ Built-In 3-2-1 Stage Battery Charger - 12V - 45 Amps

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PowerMax AC to DC Converter w/ Built-In 3-2-1 Stage Battery Charger - 12V - 100 Amps

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PowerMax AC to DC Converter w/ Built-In 3-2-1 Stage Battery Charger - 12V - 55 Amps

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Question:

Can I replace my old WFCO or Progressive Dynamics standalone converter with a PowerMax unit? I buy and sell old campers and RVs and have a few that need electricals updated. thanks. Al

asked by: Alan

Expert Reply:

Yes, Alan - PowerMax converters are a direct replacement for several common standalone converter models. For example:

- # PM34VR 45 amp replaces WFCO WF-9845

- # PM94VR 55 amp replaces WFCO WF-9855

- # PM84VR 100 amp replaces WFCO WF-68100, Progressive Dynamics PD-9180, PD-9280, and Iota DLS-90IQ4

These are all converter-only units that feed a DC fuse panel, not integrated power centers. As long as your existing converter is a standalone unit and not built into a power center, the PowerMax equivalent will fill the same role.

If you’re unsure which style you have, feel free to tell me the model and I can help confirm it.

expert reply by: Andrew N

Greg

1/13/2026

Does this still apply if the converter is mounted inside a cabinet but separate from the fuse panel?

Andrew N.

1/13/2026

@Greg Yes, as long as it’s a standalone converter and not built into a power center, the same replacement logic applies. Being mounted in a cabinet doesn’t change how it functions electrically. I will say, some of them can be hard to get out if there's not much clearance!