790

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2013 Eaton’s Crouse-Hinds Business

Explosion Protected

Terminal Boxes

Series GHG 744, 745, 746, 749

UL/cUL Listed

Cl. I, Div. 2, Groups A, B, C, D

Cl. I, Zones 1 & 2, AEx de IIB + H

2,T6

Cl. II, Div. 1, Groups E, F, G (cUL)

ATEX Certified

IECEx

CEPEL Certified

Ex de IIC, T6, Zones 1 & 2

Ex de IIC, T6 Zones 21 & 22

IP66, NEMA 4X

GOST-R

GOST-K

Applications:

Explosion protected terminal boxes are used in a metallic conduit or

cable system for a marshalling cabinet between main circuits to the

control room and branch circuits into the field.

• Junction boxes for intrinsically safe or increased safety

connections

• Are designed for industrial areas such as chemical plants, oil and

gas refineries, paint and varnish manufacturing plants, gasoline

bulk loading terminals and finishing areas where nonmetallic,

weatherproof enclosures

Features:

• Enclosures can be mounted on walls, conduits or strut systems

• Connection terminals accessible from all sides

• Snap-out brass plates for metallic entry and grounding continuity

• Snap-out terminal rails

• Clip-in grounding PE rail

• Different sizes to accommodate any number of terminal

connections

Standard Materials:

• Fiberglass-reinforced polyester housings

• Enclosure gasket – silicone

• Cover screws – stainless steel

• Metal entry plates – brass

• Conduit entries – zinc Myers hubs

Technical Data:

• Suitable from 1 to 296 terminal blocks (2.5mm

)

• Suitable for up to 90 –

/4" hubs (largest size)

• Suitable for up to 72 –

/4" metallic hubs

• Suitable for use as control panels

• Ex-e boxes and brass flanges can be field drilled

Ordering Data:

Contact factory for catalog numbers and pricing.

Have the following information ready –

• Number and size of terminals (Table 1)

• Number, size and location of entries (Tables 2 and 3)

• Required ground points (Table 4) Eaton's Crouse-Hinds will provide

you with an extended list

Certifications and Compliances:

• UL/cUL Listed

• Class I, Division 2, Groups A, B, C, D

• Class I, Zones 1 and 2, (A)Ex de IIB+H

2, T6

• Class II, Division 1, Groups E, F, G (cUL)

• ATEX Certified

• Ex de IIC, T6, Zones 1 and 2

• Ex de IIC, T6, Zones 21 and 22

• IP66, NEMA 4X

• GOST-R and GOST-K

Dimensions

In Inches:

791

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2013 Eaton’s Crouse-Hinds Business

Panel and Side Designation:

The sides of the enclosures are designated as W, X, Y and Z alphabetically in a clockwise rotation.

The narrow sides are always W and Y and the long sides are X and Z.

Table 1

Maximum Number of Built-in Terminals Supplied with Enclosure

Terminal cross section in mm

Type 2.5 4 6 10 16 25 35

Length of

terminal rail

GHG 744

39 33 33 33 17 13 – (1) 230 mm

GHG 745

2 x 40 2 x 33 2 x 39 2 x 33 40 30 20 (2) 235 mm

GHG 746

2 x 94 2 x 78 2 x 78 2 x 35 2 x 45 2 x 34 2 x 32 (2) 510 mm

GHG 749

2 x 148 2 x 124 2 x 94 2 x 75 2 x 63 2 x 63 2 x 51 (2) 795 mm

*The shallow cover is standard for terminal boxes. The deep cover is used when mounting larger sized terminal (>95 mm

) or switches for 80 amps and larger.

Table 2

Flange Arrangement for Each Enclosure

Enclosure 744 745 746 749

Removable

Flanges

2 total

1 - top and bottom

4 total

1 per side

6 total

2 top and bottom

1 each side

8 total

3 top and bottom

1 each side

Covers*

Shallow Deep or shallow Deep or shallow Shallow

# of DIN rails

1 1 or 2 1, 2, or 4 1, 2, or 6

Table 3

Maximum Number of Glands Per Side

Type Side M12 M16 M20 M25 M32 M40 M50 M63

NPT equivalent

/2"

/4"1"1

/4"1

/2"2"

GHG 744

X/Z 60 36 26 18 10 7 4 3

GHG 745

X/Z 60 36 26 18 10 7 4 3

GHG 746

X/Z 120 72 52 36 20 14 8 6

GHG 749

X/Z 180 108 78 54 30 21 12 9

# of glands/flange†

46 25 20 11 8 4 3 2

# of Myers hubs/flange†

–1096332

† If flanges are used, fewer glands can be installed. See Table 1 for flange arrangement.

Example: In the GHG 745 box a maximum of (10)

/2" Myers hubs can be installed on each brass flange plates.

Each side will take one brass flange for a total of (40)

/2" Myers hubs.