Hazardous Classifications for which APS makes compressors:
Division/Zone 2 (This NEC classification includes the areas that ATEX and IECEx classify as Zone 2):
Class I Groups B, C and D Division/Zone 2
Class I Groups C and D Division/Zone 2
Class I Group D Division/Zone 2
Class II Groups E, F and G Division/Zone 2
Class II Groups F and G Division/Zone 2
Class II Groups G Division/Zone 2
Class III Division/Zone 2
Division/Zone 1 (This NEC classification includes the areas that ATEX and IECEx classify as Zone 1 and Zone 0):
Class I Groups B, C and D Division/Zone 1
Class I Groups C and D Division/Zone 1
Class I Group D Division/Zone 1
Class II Groups E, F and G Division/Zone 1
Class II Groups F and G Division/Zone 1
Class II Groups G Division/Zone 1
Class III Division/Zone 1
Andover Protection Systems, LLC designs and manufactures its compressors to comply with the requirements of the United States National Electric Code and UL Standard 1203.
Since 1997, APS compressors have been the first and only hermetic refrigeration compressors in the world that have Underwriters Laboratories’ (UL) specific recognition for use in locations classified as hazardous (explosive).