Part Numbers ERH & EPD
Strateline
Factory Sealed
EPD PLUGS AND ERH RECEPTACLES
CIRCUIT BREAKING WITH DELAYED ACTION
U.S. Patent No. 2,626,974 - Canadian Patent No. 488,496
Explosion proof Class I, Groups C and D
Plugs fit only receptacles of the same electrical rating as listed in the spaces directly to the left of each plug group. ERH
Receptacles		 ERH Two-Gang Receptacles EPD Plugs - Aluminum Alloy
Single ERH Two Gang EPD Plug
20 Amp For Circuits Hub Positions Hub
Size		 Catalog Number Diameter
Cord		 Catalog
Number
20 Amperes or 1 HP, 120 or 240 Volts - 60 Hz A.C.
2 Pole
3 Wire		 Dead
End ‡		 ½
¾
1		 ERHA-11532
ERHA-21532
ERHA-31532		 ERHA-115322
ERHA-215322
ERHA-315322		 .250 to .625 EPD-51532
2 Pole
3 Wire		 Through Feed ½
¾
1		 ERHC-11532
ERHC-21532
ERHC-31532		 ERHC-115322
ERHC-215322
ERHC-315322
20 Amperes or 1 ½ HP, 120 or 240 Volts - 60 Hz AC
3 Pole
4 Wire		 Dead
End ‡		 ½
¾
1		 ERHA-11542
ERHA-21542
ERHA-31542		 ERHA-115422
ERHA-215422
ERHA-315422		 .250 to .625 EPD-51542
3 Pole
4 Wire		 Through Feed ½
¾
1		 ERHC-11542
ERHC-21542
ERHC-31542		 ERHC-115422
ERHC-215422
ERHC-315422
spacer
30 Amp 30 Amperes or 1 ½ HP, 120 or 240 Volts; 7 Amperes or ½ HP, 480 Volts - 60 Hz AC
2 Pole
3 Wire		 Dead
End ‡		 ¾
1		 ERHA-23032
ERHA-33032		 ERHA-230322
ERHA-330322		 375 to .625
.626 to .875		 EPD-53032
EPD-73032
Through Feed ¾
1		 ERHC-23032
ERHC-33032		 ERHC-230322
ERHC-330322
30 Amperes or 3 HP, 120 or 240 Volts; 7 Amperes or ½ HP, 480 Volts - 60 Hz AC
3 Pole
4 Wire		 Dead
End ‡		 ¾
1		 ERHA-23042
ERHA-33042		 ERHA-230422
ERHA-330422		 375 to .625
.626 to .875		 EPD-53042
EPD-73042
Through Feed ¾
1		 ERHC-23042
ERHC-33042		 ERHC-230422
ERHC-330422
‡ Can be installed with hub at top or bottom, as covers are reversible.
Dimensions:
  • Height including hubs: 6 1/4" except 1" hub sizes which are 6 ½".
  • Width: 3 ½" for single gang - 7 3/8" for two gang.
  • Mounting Holes: 11/32" diameter on 5 ½" x 2 ½" centers.
  • Depth from mounting surface to end of receptacle cover: 7 1/8" for 20 amperes - 8 3/4" for 30 ampere.