Searching for Honeywell DC Thermostat Replacements

Honeywell discontinued their bimetal disc thermostat line a few years ago. I am hoping to find a replacement that is 5A@28VDC compatible.
Honeywell PN: 3500 00280049
Digikey PN: 480-350000180049-ND
Open on rise, 40F.
Thank you for any assistance you can provide.

Hello Anthony,

I’m sorry, but we do not have an alternate with these temperature and current ratings.

Thank you for reviewing

Hello Anthony,

That seems to be a common problem with industrial controls. The machinery can run for decades, yet replacements parts can be hard to source.

I wish you the best in your search.

If you don’t find an in-kind replacement, you could replace this functionality with a tiny PLC and a sensor. Here the term tiny implies that the PLC will perform the single function associated with a particular sensor, specialty relay, or cam contactor. If necessary, this tiny PLC could even feed a signal to a larger PLC.

Perhaps, it’s not an ideal solution but it could restore your mechanism with minimal cost and effort. For example, consider these small PLCs. Depending on the modification it could make machine testing and recommissioning easier.

Please let us know if we can assist in the PLC or sensor selection process.

Best Wishes,


Thank you APDahlen. I will give a shot to reviewing a few PLC solutions.

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