Square D Circuit Breaker-30 Amp-HACR Type-2 Pole-QO-120/240 V.AC-Gently Used

Square D Circuit Breaker-30 Amp-HACR Type-2 Pole-QO-120/240 V.AC-Gently UsedInformation from the side of the Unit:Square D Company Circuit BreakersListed HACR Type"For use with air conditioning, heating & refrigeration equipment having motor group combinations and marked for use with HACR circuit breakers"Type: QOPoles: 2Amps: 30120/240 V.ACThese breakers (we have multiples) were installed in a building and the tenant never moved in. The next tenant wanted different electrical equipment. These items are gently used and do not come in their original packaging. They have been sitting in storage for a while and are a little dirty in the nooks but are in good condition. Shipping weight for one: 14 oz. (includes extra packing for extra protection)Additional Information from Square D Spec Sheet:Data Bulletin0600DB0102R11/11, 11/2011Replaces 0600DB0102 02/2002HACR Ratings and UL® Listed Molded Case Circuit Breakers© 2002–2011 Schneider Electric All Rights Reserved™IntroductionHeating, Air Conditioning, and Refrigeration (HACR) applications are a commonexample of group motor installations. M0st modern heating applications includefans for combustion air, exhaust control, and heated air handling. Airconditioning and refrigeration equipment use compressors for the refrigerant and fans for cooled air handling. The National Electric Code provides information on installation of branch circuits and overcurrent protection equipment for use with group motor installations. Article 430.53(c)(3) of the NEC states that for group motor installations, “Each circuit breaker is listed and is of the inverse time type.”NEC Article 440.21 and 440.51 lists the requirements for applications and selection of the branch circuit over current protection devices for air conditioning and refrigeration equipment. History of HACR RatingsFor many years Underwriters Laboratories required special testing of circuit breakers used in group motor applications in air conditioning and refrigeration equipment. UL had Listed these circuit breakers as HACR Type and they were used to meet the requirement s of Article 430.53(c)(3). At first, UL restricted the HACR listing to circuit breakers rated 240 Vac or less and 60 A maximum. In the early 1990s UL redefined the test parametersor UL Listed HACR Type circuit breakers, resulting in HACR ratings for circuit breakers rated 600 Vac and less and 250 A maximum as a second step. By these test parameters HACR Type circuit breakers were the same as other types of inverse-time circuit breakers except they were additionally investigated by UL and determined to be suitable for motor branch circuit protection on groupinstallations. Initially, these circuit breakers were tested and Listed to UL 489, the standard for safety for molded-case circuit breakers. Then additional investigation was done including tests to determine that the circuit breaker provided appropriate protection for the circuit components of typical heating, air conditioning, and refrigeration equipment. These included compressor motors and fan motors connected in group motor applications.HACR Ratings TodayA great number of circuit breakers were investigated by UL using the special HACR testing. It was found that all circuit breakers that passed the normal UL 489 tests also passed the special HACR testing without a special design. As a result, UL 489 has been revised to recognize that all circuit breakers that satisfy the construction and test requirements for UL 489 Listing are also suitable for HACR applications. Section 7.8 of the 11thedition of UL 489 grants HACR listing to all UL 489 Listed circuit breakers. There is no longer a requirement for special testing. These circuit breakers are suitable for group motor applications requiring HACR designation.HACR LabelingMost customers and electrical inspectors are familiar with this section of the UL 489 standard and will accept UL 489 Listed circuit breakers in group motor applications requiring HACR type devices