Appleton U-Line™ Factory Sealed 20 Amp Panel Mounting Receptacles Catalog Page
U-Line™ Factory Sealed 20 Amp Panel Mounting Receptacles
Explosionproof, Dust-Ignitionproof, Watertight
125 Vac, 20 Amp, 1 HP; 250 Vac, 20 Amp, 2HP. Dead-Front Safety Construction.
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups F, G
Class III
NEMA 3, 3S, 3R, 3RX, 4, 4X, 7BCD, 9FG,
12
Applications
• Class I, Division 1 applications require a minimum of ve full
threads of engagement (seven for Group B).
— ECHT is designed to be used where unit is threaded into
1-1/2” NPT (tapered) threads, such as in panelboards.
— ECH is designed to be used where the unit is threaded into
2” NPSM (straight) threads.
• In Class I, Division 2 applications no thread engagement is
required unless non-factory sealed devices are also installed in
the enclosure.
— ECHT and ECH are suitable for use with approved
enclosures having threaded or non-threaded openings for
these receptacles.
— Where threaded enclosures are used, they must have
1-1/2” NPT or NPSM threads to t the ECHT and 2” NPSM
(straight) threads to t the ECH.
Features
• Furnished with steel locknut and neoprene sealing gasket.
• Gasketed construction protects receptacle against moisture
and dirt with plug in or out.
• Interior switch cylinder has neoprene O-ring at each end to seal
out dust and moisture.
• Style 2 (shell and extra pole) grounding.
• NEMA 3RX spring-loaded cover and NEMA 4X screw cover
included for application exibility.
Standard Materials
• Copperfree (less than 4/10ths of 1%) aluminum
Standard Finishes
• Epoxy clad-two-coat baked nish
NEC/CEC Certifications and Compliances
• UL Standard: UL 1010 (UL 1203)
• UL Listed: E10784
• CSA Standard: C22.2 No. 25, C22.2 No. 30, C22.2 No. 159
• CSA Certied: 038644
Recommended Enclosure Types
Typical Class I, Division 1 Application Typical Class I, Division 2 Application
Hazardous
(Classified) Location Suitable NEMA Enclosure Type
Class I, Division 1
PLUGS AND RECEPTACLES: NEC/CEC HAZARDOUS LOCATION
Class I, Division 2
Class II, Division 1
Class II, Division 2
Do not use where electrically conductive dusts are present (most coal dusts are not electrically conductive).
Suitable for these types with a suitable NEMA enclosure type.
NEMA 3RX when the spring-loaded cover is installed and closed on a suitable enclosure. NEMA 4X when the screw cover is installed on a suitable enclosure
and fully engaged.
NEMA 7BCD with 1-1/2” (1-1/2—11-1/2 NPT) or 2” (2—11 1/2 NPSM) thread opening. Minimum 7 full threads of
engagement required for Group B; minimum 5 threads for Groups C and D.
NEMA 3, 3S, 3R, 4, 4X, 12 or any suitable enclosed and gasketed enclosure that prevents the escape of sparks or
burning materials.
NEMA 9F, G with 1-1/2” (1-1/2—11-1/2 NPT) or 2” (2—11-1/2 NPSM) thread opening. Minimum 3 full threads of
engagement required.
NEMA 3, 3S, 4, 4X, 12 or any suitable enclosed and gasketed enclosure that minimizes entrance of dust and
prevents escape of sparks or burning materials.
408
© July 2018
U-Line™ Factory Sealed 20 Amp Panel Mounting Receptacles
Explosionproof, Dust-Ignitionproof, Watertight
125 Vac, 20 Amp, 1 HP; 250 Vac, 20 Amp, 2HP. Dead-Front Safety Construction.
NEC/CEC:
Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups F, G
Class III
NEMA 3, 3R, 3RX, 4X, 7BCD, 9FG
20 Amp Aluminum Panel Mounting Receptacles
125 Vac, 1 HP 250 Vac, 2 HP
Thread Size and Type Wire/Pole
1-1/2” (1-1/2—11-1/2 NPT) 2W, 3P ECHT2023 ECHT20232
2” (2—11-1/2 NPSM) 2W, 3P ECH2023 ECH20232
Dimensions in Millimeters (Inches)
ECHT ECH
Catalog Number
Open Cover
PLUGS AND RECEPTACLES: NEC/CEC HAZARDOUS LOCATION
Do not use where electrically conductive dusts are present (most coal dusts are not electrically conductive).
ECHT has 1-1/2” tapered threads (1-1/2-11-1/2 NPT); ECH has 2” straight threads (2—11-1/2 NPSM).
NEMA 3RX when the spring-loaded cover is installed and closed on a suitable enclosure. NEMA 4X when the screw cover is installed on a suitable enclosure
and fully engaged.
© July 2018
409
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