
DTX Series Junction Boxes
ENCLOSURES AND JUNCTION BOXES: NEC/CEC WEATHERPROOF/DUSTPROOF JUNCTION AND OUTLET BOXES
© October 2018
Dust-Ignitionproof, Watertight
Cast iron box and cover for surface mounting. Cast aluminum box and cover for surface mounting.
NEC:
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 4, 9EFG
Applications
• DTX dust tight and watertight boxes are specially designed
and constructed for hazardous locations where ignitable dusts,
bers or yings are present such as:
• Grain elevators
• Grain storage areas
• Paper mills
• Coal storage facilities
• Textile factories
Features
• Provided with mounting lugs.
• Mechanically attached gaskets.
Standard Materials
• Bodies and covers: cast iron
• Gasket: vellumoid
• Cover bolts: stainless steel
Standard Finishes
• Cast iron bodies and covers: hot dip galvanized nish
Optional Materials
• Cast aluminum box and cover. Add sufx - A.
• For factory installed mounting plate, add sufx -WYM
• Refer to Junction Box Mounting Plate Information for complete
listing of available mounting plates.
NEC Certifications and Compliances
• UL Standard: UL 886 (UL 1203)
• UL Listed: E10444
67

DTX Series Junction Boxes
ENCLOSURES AND JUNCTION BOXES: NEC/CEC WEATHERPROOF/DUSTPROOF JUNCTION AND OUTLET BOXES
© October 2018
Dust-Ignitionproof, Watertight
Cast iron box and cover for surface mounting. Cast aluminum box and cover for surface mounting.
NEC:
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 4, 9EFG
Approximate
Thickness
Side Walls
mm (in)
6.4 (0.25) 3/4 101.6 (4.00) x 101.6 (4.00) x 101.6 (4.00) 3.6 (8.00) 1.4 (3.00) DTX-040404
6.4 (0.25) 3/4 152.4 (6.00) x 101.6 (4.00) x 101.6 (4.00) 3.6 (8.00) 1.4 (3.00) DTX-060404
6.4 (0.25) 3/4 152.4 (6.00) x 152.4 (6.00) x 101.6 (4.00) 6.8 (15.00) 2.7 (6.00) DTX-060604
6.4 (0.25) 3/4 152.4 (6.00) x 152.4 (6.00) x 152.4 (6.00) 8.2 (18.00) 3.2 (7.00) DTX-060606
6.4 (0.25) 3/4 203.2 (8.00) x 101.6 (4.00) x 101.6 (4.00) 5.4 (12.00) 2.3 (5.00) DTX-080404
6.4 (0.25) 3/4 203.2 (8.00) x 152.4 (6.00) x 76.2 (3.00) 6.8 (15.00) 2.7 (6.00) DTX-080603
6.4 (0.25) 3/4 203.2 (8.00) x 152.4 (6.00) x 101.6 (4.00) 7.3 (16.00) 2.7 (6.00) DTX-080604
6.4 (0.25) 3/4 203.2 (8.00) x 152.4 (6.00) x 152.4 (6.00) 10.00 (22.00) 3.6 (8.00) DTX-080606
6.4 (0.25) 3/4 203.2 (8.00) x 203.2 (8.00) x 101.6 (4.00) 10.9 (24.00) 4.1 (9.00) DTX-080804
6.4 (0.25) 3/4 203.2 (8.00) x 203.2 (8.00) x 152.4 (6.00) 13.2 (29.00) 5.0 (11.00) DTX-080806
6.4 (0.25) 3/4 203.2 (8.00) x 203.2 (8.00) x 203.2 (8.00) 15.0 (33.00) 5.9 (13.00) DTX-080808
6.4 (0.25) 3/4 254.0 (10.00) x 152.4 (6.00) x 152.4 (6.00) 10.9 (24.00) 4.1 (9.00) DTX-100606
6.4 (0.25) 3/4 254.0 (10.00) x 203.2 (8.00) x 152.4 (6.00) 15.4 (34.00) 5.9 (13.00) DTX-100806
6.4 (0.25) 3/4 254.0 (10.00) x 203.2 (8.00) x 203.2 (8.00) 18.6 (41.00) 6.8 (15.00) DTX-100808
6.4 (0.25) 3/4 254.0 (10.00) x 254.0 (10.00) x 101.6 (4.00) 14.1 (31.00) 5.4 (12.00) DTX-101004
6.4 (0.25) 3/4 254.0 (10.00) x 254.0 (10.00) x 152.4 (6.00) 17.7 (39.00) 6.8 (15.00) DTX-101006
6.4 (0.25) 3/4 304.8 (12.00) x 203.2 (8.00) x 101.6 (4.00) 14.1 (31.00) 5.4 (12.00) DTX-120804
6.4 (0.25) 3/4 304.8 (12.00) x 203.2 (8.00) x 152.4 (6.00) 18.1 (40.00) 6.8 (15.00) DTX-120806
6.4 (0.25) 3/4 304.8 (12.00) x 203.2 (8.00) x 203.2 (8.00) 21.8 (48.00) 8.2 (18.00) DTX-120808
6.4 (0.25) 3/4 304.8 (12.00) x 254.0 (10.00) x 101.6 (4.00) 20.0 (44.00) 7.7 (17.00) DTX-121004
6.4 (0.25) 3/4 304.8 (12.00) x 304.8 (12.00) x 152.4 (6.00) 24.5 (54.00) 8.6 (19.00) DTX-121206
7.9 (0.31) 2 304.8 (12.00) x 304.8 (12.00) x 203.2 (8.00) 29.9 (66.00) 11.3 (25.00) DTX-121208
7.9 (0.31) 2 304.8 (12.00) x 304.8 (12.00) x 304.8 (12.00) 37.2 (82.00) 14.1 (31.00) DTX-121212
6.4 (0.25) 3/4 101.6 (14.00) x 203.2 (8.00) x 152.4 (6.00) 18.1 (40.00) 6.8 (15.00) DTX-140806
7.9 (0.31) 2 101.6 (14.00) x 101.6 (14.00) x 152.4 (6.00) 34.0 (75.00) 12.7 (28.00) DTX-141406
Maximum
Conduit
Size
(In.-NPT)
Inside Dim. in Millimeters (Inches)
Iron Weight
kg (lb)
Aluminum Weight
kg (lb)
Catalog
Number L x W x D
Type DTX boxes must have a minimum of 3-1/2 full threads at all conduit entrances. The “Max. Conduit Size” listed herein indicates the maximum drilled and
tapped conduit entrance which can be machined into the four unbossed sides of a given box to provide these 3-1/2 full threads. If larger conduit openings
than those listed herein are required, bosses can be supplied by us at an additional cost to provide the minimum 3-1/2 full thread requirement. In addition to
the minimum 3-1/2 full thread requirement, the length of thread at conduit entrances must also be at least 1/4”. A 3/8” conduit entrance therefore requires a
minimum of a 6.4 mm (0.25”) wall thickness. For aluminum box and cover, add suffix —A.
68

DTX Series Junction Boxes
ENCLOSURES AND JUNCTION BOXES: NEC/CEC WEATHERPROOF/DUSTPROOF JUNCTION AND OUTLET BOXES
© October 2018
Dust-Ignitionproof, Watertight
Cast iron box and cover for surface mounting. Cast aluminum box and cover for surface mounting.
NEC:
Class II, Division 1 and 2, Groups E, F, G
Class III
NEMA 4, 9EFG
Approximate
Thickness
Side Walls
mm (in)
7.1 (0.28) 3/4 406.4 (16.00) x 304.8 (12.00) x 203.2 (8.00) 36.7 (81.00) 13.6 (30.00) DTX-161208
7.1 (0.28) 3/4 457.2 (18.00) x 203.2 (8.00) x 152.4 (6.00) 25.9 (57.00) 9.5 (21.00) DTX-180806
7.1 (0.28) 3/4 457.2 (18.00) x 304.8 (12.00) x 152.4 (6.00) 37.2 (82.00) 14.1 (31.00) DTX-181206
7.9 (0.31) 2 457.2 (18.00) x 304.8 (12.00) x 254.0 (10.00) 48.5 (107.00) 18.1 (40.00) DTX-181210
7.9 (0.31) 2 457.2 (18.00) x 457.2 (18.00) x 152.4 (6.00) 59.0 (130.00) 21.8 (48.00) DTX-181806
7.9 (0.31) 2 457.2 (18.00) x 457.2 (18.00) x 254.0 (10.00) 70.8 (156.00) 26.3 (58.00) DTX-181810
7.9 (0.31) 2 609.6 (24.00) x 304.8 (12.00) x 203.2 (8.00) 56.7 (125.00) 21.3 (47.00) DTX-241208
7.9 (0.31) 2 609.6 (24.00) x 304.8 (12.00) x 304.8 (12.00) 72.6 (160.00) 27.2 (60.00) DTX-241212
8.6 (0.34) 2 609.6 (24.00) x 457.2 (18.00) x 152.4 (6.00) 74.8 (165.00) 27.7 (61.00) DTX-241806
8.6 (0.34) 2 609.6 (24.00) x 457.2 (18.00) x 304.8 (12.00) 106.6 (235.00) 39.5 (87.00) DTX-241812
8.6 (0.34) 2 609.6 (24.00) x 609.6 (24.00) x 152.4 (6.00) 102.1 (225.00) 38.1 (84.00) DTX-242406
9.7 (0.38) 2 609.6 (24.00) x 609.6 (24.00) x 304.8 (12.00) 136.1 (300.00) 50.3 (111.00) DTX-242412
9.7 (0.38) 2 914.4 (36.00) x 457.2 (18.00) x 203.2 (8.00) 163.3 (360.00) 43.5 (96.00) DTX-361808
9.7 (0.38) 2 914.4 (36.00) x 457.2 (18.00) x 304.8 (12.00) 158.8 (350.00) 59.0 (130.00) DTX-361812
Maximum
Conduit
Size
(In.-NPT)
Inside Dim. in Millimeters (Inches)
Iron Weight
kg (lb)
Aluminum Weight
kg (lb)
Catalog
Number L x W x D
10.4 (0.41) 2 914.4 (36.00) x 609.6 (24.00) x 457.2 (18.00) 294.8 (650.00) 111.1 (245.00) DTX-362418
11.2 (0.44) 6 914.4 (36.00) x 914.4 (36.00) x 304.8 (12.00) 240.4 (530.00 90.7 (200.00) DTX-363612
Type DTX boxes must have a minimum of 3-1/2 full threads at all conduit entrances. The “Max. Conduit Size” listed herein indicates the maximum drilled and
tapped conduit entrance which can be machined into the four unbossed sides of a given box to provide these 3-1/2 full threads. If larger conduit openings
than those listed herein are required, bosses can be supplied by us at an additional cost to provide the minimum 3-1/2 full thread requirement. In addition to
the minimum 3-1/2 full thread requirement, the length of thread at conduit entrances must also be at least 1/4”. A 3/8” conduit entrance therefore requires a
minimum of a 6.4 mm (0.25”) wall thickness. For aluminum box and cover, add suffix —A.
69