Locations where receptacles are used with stationary or
portable electrically operated devices such as:
Lighting systems
Conveyors
Heaters
Motor-generator sets
Air conditioners
Compressors
Pumps
Locations with damp or corrosive conditions.
Class I: classified locations where ignitable vapors or gases
are present such as:
Petrochemical plants
Petroleum refineries
Paint and chemical plants
Class II: classified locations such as:
Process industries where there are dust hazards from handling such products as flour, grain and starch or any
location where ignitable amounts of dust are present or amounts which would adversely affect performance.
Features
Intermateable with competitor’s plugs of like configurations.
Factory sealed, external seals not required in most areas. Arcing is safely confined to receptacle interior.
Choice of malleable iron receptacle and mounting box or aluminum receptacle and mounting box.
Energized receptacle contacts deeply recessed to reduce danger of accidental touching.
Unique blade-type, brass contacts exert constant pressure along entire contact surface and provide superior electrical contact.
Insulators provide superior dielectric and mechanical strength and lowest arc tracking.
ECP plug fits any standard non-explosionproof receptacle (NEMA 5-20R, or 6-20R) as well as U-Lineâ„¢ explosionproof receptacles.
U-Line™ EFSR-K receptacle covers are UL Classified when used with Killark SWB mounting boxes.