This Honeywell product is the only 277v relay with a built in 24v transformer that I have found. I bought these to replace the same product which was only a few years old that were destroyed by a power surge. Could they have designed it better so that they wouldn't have literally exploded due to the power surge? Fortunately the circuit breakers tripped or I would have had a fire. Other than that, the other 9 of these that I have are working flawlessly. It would be helpful if the product materials better described how to hook them up in parallel circuits using the same thermostat. By the way I am not an HVAC professional.
Wolfman
Northern Michigan
10 years ago
Verified Buyer
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