Cut Sheet

Class I, Division 1 and 2, Groups B, C, D
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 3, 4
Enclosures and Junction Boxes
ENCLOSURES AND JUNCTION BOXES: HAZARDOUS LOCATION CONDUIT OUTLET BOXES
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© November 2011
503
GR and GRF Conduit Outlet Box Covers
Explosionproof, Dust-Ignitionproof
Covers and O-rings Fit Bodies with Corresponding Form Numbers.
Hub Type
Cover Opening
Inches/Millimeters
Fixture Stem Size
Inches/Millimeters
Form
Number {
Catalog Number
Malleable Iron Aluminum
4VSGBDF|
  GRK-1M GRK-1
  GRK-2M GRK-2
  GRK-3M GRK-3
4FBMJOH|
  GRK-1SC GRK-1SC-A
  GRK-2SC GRK-2SC-A
  GRK-3SC GRK-3SC-A
o%FFQ%PNF
UL Listed: E185964
  r GRK-1DC
6OJPO)VC    GRK-75U GRK-75UA
)VC
   GRK-50 GRK50-A
   GRK-75 GRK75-A
$BOPQZ
-FOHUIo
   GRK-50C r
   GRK-75C r
   GRK-100C r
Catalog Number
O-Rings — Buna-N
1SPWJEF3BJOUJHIUGJUXIFOVTFEPOGPMMPXJOHTFSJFT
(3'PSNTBOE(3''PSN(3)BOE(36
'PSN
 GRG-1
 GRG-2
 GRG-3
GRTB Terminal Strip
For use in standard GR series boxes Weidmuller type MK terminal block } with wire range of #22-#12 AWG.
Mounts on 2 predrilled and tapped standard holes (furnished in internal GR boxes).
QPTJUJPOUFSNJOBMCMPDLLJU  GRTB6-12
QPTJUJPOUFSNJOBMCMPDLLJU  GRTB6-3
QPTJUJPOUFSNJOBMCMPDLLJU  GRTB12-3
 In Class I, Division 1, Group B atmospheres, all conduit runs must have a sealing fitting (not supplied) field-installed adjacent to the enclosure.
{ Form numbers designate cover and matching body sizes.
| PVC coating available, add suffix -PVC to catalog number.
} Terminal block is UL listed for 300 Volt, 25 Amp. CSA certified for 300 Volt, 13 Amp.