Certifications and compliances

ENRX receptacles:

• Class I, Divisions 2, Groups B, C, D
• Class I, Zone 2, IIA, IIB + H2
• Class II Groups F, G
• Class III
• UL standard: 1203, 121201, 498 (20A models only)
• CSA certified CSA C22.2 Nos. 0, 30, 42, 94 and 159 (15A and 20A models)
• NEMA/EEMAC 3, 3X, 4, 4X (to achieve NEMA 4X rating, the back box and cover must be aluminum)

ENR receptacles (M3 and M4 models) and ENP plugs:

• Class I, Divisions 1 & 2, Groups B†, C, D
• Class II, Divisions 1 & 2, Groups F, G
• Class III
• ANSI/UL standard: 1010
• NEMA/EEMAC 3, 3R (M4 only), 7BCD, 9FG

†Receptacle units alone (i.e. ENR5201) are not suitable  for Class I, Group B.

ENC connectors:

• CSA certified CSA C22.2 No. 159M
• Class I, Groups B, C, D
• Class II, Group G, Coal Dust
• Class III
• NEMA 3R, weatherproof
• NEC Article 501.140 compliance

• Factory sealed chamber in receptacle and connector encloses the potential arcing components between two explosionproof threaded joints; these threads are specially coated to guarantee freedom of movement, which ensures on-off action; no additional seals are required
• One-piece molded gasket seals cover plate and ENP plug when plug is inserted, providing full environmental protection at the receptacle face

ENRX receptacles:

• ENRX cover provides NEMA 4X protection with a broader temperature range, captive screws and panel mount capability 
• Retrofit cover design allows customers to purchase the cover and install it on the existing aluminum back box to get the NEMA 4X rating

ENR M4 premier receptacles:

• Gasketed screw cap cover design offers superior protection from harsh environments for increased product life
• Spring-loaded sliding key increases safety by rejecting standard NEMA/EEMAC configuration plugs that could cause an arc in a hazardous area
• Saddle clamp terminals are easy to wire, reducing installation costs and effort
• Lockout/tagout hole complies with OSHA lockout/tagout requirements

ENR M3 value receptacles:

• Top-hinged cover design with 45° downward angle provides superior protection in damp, wet, and dirty locations

ENP plugs:

• Captive set screw design assures ease of installation and reduces likelihood of losing critical components in the field
• Insulator and contact components are now a single-piece assembly
• ENP plugs can be used in non-hazardous areas with standard U-ground NEMA/EEMAC configuration 5 and 6 receptacles, eliminating the need for two separately equipped portable units of the same type; the ENR receptacle will not accept standard NEMA/EEMAC configuration plugs
• Plug body is designed with an internal cord strain relief mechanism and a cable sealing grommet which will accept various cable diameters

ENC connectors:

• Uni-Shell handle body provides a smooth, durable external surface that prevents the connector from getting snagged on equipment or other cables
• Spring-loaded sliding key increases safety by rejecting standard NEMA/EEMAC configuration plugs that could cause an arc in a hazardous area
• Increased environmental reliability with hinged locking cover that provides weather protection in damp, wet and dirty locations; cover stays closed until connection with ENP plug is required
• Improved safety with integral lockout/tagout eliminates risk of operator or contractor plugging in process equipment when conditions are unsafe
• Saddle clamp terminals provide increased safety with easy-to-terminate connection points for reliable conductor terminations
• Increased safety with captive Tri-Lock design: three points of contact prevent pinching of cables that could damage internal conductors or cable jacket; captive screws prevent critical components from getting lost during installation
• Snap-in internal insulator increases safety of personnel with intermediate insulator between conductors and metallic outer shell

Receptacle:

• Receptacle housing and spring door – copper-free aluminum
• Receptacle interior – Krydon fiberglass-reinforced polyester
• Receptacle contacts – brass
• Receptacle cover hinge pin and spring – stainless steel
• Receptacle gasket – neoprene

Plug:

• Plug interior – nylon
• Plug contacts – brass
  
• Plug bushing – Neoprene

Connector:

• Connector body – copper-free aluminum
• Connector insulation – fiberglass-reinforced polyester
• Connector contacts – brass