HACR breakers

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I don't believe that is in the NEC but part of the manufacturers info on the unit. Some units states max HACR breaker
 
Dennis Alwon said:
I don't believe that is in the NEC but part of the manufacturers info on the unit.
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Agreed, here is the commentary following 440.21 in the 2008 HB.

Where an air conditioner is listed by a qualified electrical testing laboratory with a nameplate that reads ?maximum fuse size,? the listing restricts the use of this unit to fuse protection only and does not cover its use with circuit breakers. If the air conditioner has been evaluated for both fuses and ordinary circuit breakers or both fuses and HACR-type circuit breakers, it may be so marked. UL-listed circuit breakers that have been found suitable for use with heating, air-conditioning, and refrigeration equipment comprising multimotor or combination loads are marked ?Listed HACR Type.? It is the intent of 110.3(B) to require that the manufacturer's installation specifications be closely followed and that any restriction of the listing be applied to the installation of the equipment, in order to comply with the Code.
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I would have bet money that it was a code section, but I will have to agree with Dennis.

Most breakers now days are all marked HACR.

OK now for my edit: Thank you Chris, I knew I had seen it somewhere.
 
FWIW,

For the past 10 years, or more, HACR has been a standard component of UL Listing for all mutli-pole breakers. With this 'mandatory' testing, the specific labeling of a breaker as HACR has become optional. Because some AHJ still want to see the label, most manufacturers can provide 'labeled' devices.
 
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