HACR - Heating or Hermetic?
- Thread starter SteveOle
- Start date
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- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Re: HACR - Heating or Hermetic?
I have seen the acronym "HACR" used in two contexts. One is "Heating, Air Conditioning, and Refrigeration." The other was a particular brand and type of relay/contactor. The four letters represented the names of its four inventors.
I have seen the acronym "HACR" used in two contexts. One is "Heating, Air Conditioning, and Refrigeration." The other was a particular brand and type of relay/contactor. The four letters represented the names of its four inventors.
charlie
Senior Member
- Location
- Indianapolis
Re: HACR - Heating or Hermetic?
I have only seen the reference as HACR type circuit breakers and never used with fuses. Also, it has always been in conjunction with heating, air conditioning and refrigerating equipment.
I have only seen the reference as HACR type circuit breakers and never used with fuses. Also, it has always been in conjunction with heating, air conditioning and refrigerating equipment.
Re: HACR - Heating or Hermetic?
Charlies, You both say that you have seen these breakers in heating, air conditioning, and refrigeration. However, hasn't it always been in air conditioning and refrigeration only? Has there ever been a HACR requirement for heating? This is why I believe that the 'H' stands for hermetic.
Charlies, You both say that you have seen these breakers in heating, air conditioning, and refrigeration. However, hasn't it always been in air conditioning and refrigeration only? Has there ever been a HACR requirement for heating? This is why I believe that the 'H' stands for hermetic.
kturner
Member
- Location
- East Tennessee
Re: HACR - Heating or Hermetic?
From the UL white book -
Circuit breakers which have been found suitable for use with heating, air conditioning and refrigeration equipment comprising multimotor or combination loads are marked "HACR TYPE"...
From the UL white book -
Circuit breakers which have been found suitable for use with heating, air conditioning and refrigeration equipment comprising multimotor or combination loads are marked "HACR TYPE"...
jwelectric
Senior Member
- Location
- North Carolina
Re: HACR - Heating or Hermetic?
Never seem one required on heating strips but I have seen them required on heating when using heat pumps.
Never seem one required on heating strips but I have seen them required on heating when using heat pumps.
Re: HACR - Heating or Hermetic?
JW, Heat pumps require HACRs because they use the hemetic compressor for heating and cooling.
KT, I've seen that reference in the UL and a similar one in NEMA documentation. I just have never come across a need for a HACR that did not involve a hermetic compressor.
JW, Heat pumps require HACRs because they use the hemetic compressor for heating and cooling.
KT, I've seen that reference in the UL and a similar one in NEMA documentation. I just have never come across a need for a HACR that did not involve a hermetic compressor.
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
Re: HACR - Heating or Hermetic?
The HACR rating was refering to a general class of equipment not a specific type of device. This class of equipment involves multiple motors (i.e. compressors and fans) which require special overcurrent considerations.
The HACR rating was refering to a general class of equipment not a specific type of device. This class of equipment involves multiple motors (i.e. compressors and fans) which require special overcurrent considerations.
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