Underwriters Laboratories Inc.

About UL | Careers | Contact Us

Telephones and Telephone Accessories for Use in Hazardous Locations

The need to communicate does not stop at the border of what is generally considered to be a "Hazardous Location." Typically, these are areas where there is a risk that an explosive atmosphere may be present and there is a critical need to eliminate the possibility of igniting what may be a volatile mixture. Such locations include but are not limited to oil refineries, chemical storage areas and the like."

UL has several categories that cover telephone equipment for use in Hazardous Locations (HazLoc). These categories include equipment such as telephones, sound powered telephones, communication equipment and systems, dialing units, push-button stations, relays, snap switches, as well as conduit boxes having terminal blocks for connection to telephone sets. Unless identified as intrinsically safe or for use in Division 2 locations only, the equipment covered is of the explosion-proof design.

Find out more about worldwide requirements for Hazardous Locations (HazLoc) Equipment and related UL's programs and services.

Contact us

If you want to get in touch with one of our experts on Telephones and Telephone Accessories for Hazardous Locations contact Jerry Wodzinski, +1-847-272-8800 ext. 42840 or Joe Getner, +1-847-272-8800 ext. 43519.