Howard Junction Enclosures User Manual
Howard Industries
Utility Products Division
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Howard Industries’ junction
enclosures are designed to provide a
rugged, tamper-resistant housing for
multipoint medium-voltage junction
modules used in connection, looping,
or tapping applications. Junction
enclosures are available for both
single-phase and three-phase
systems.
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Howard junction enclosures are
supplied with the following standard
features:
Mild steel all-welded construction
Electrostatically applied polyester
powder primer with polyurethane
topcoat; enclosure color is Munsell
7GY3.29/1.5 green; junction
mounting plate color is Munsel
5BG7.0/0.4 gray
Stainless steel handle,padlock
provision, recess cup, hinge pins
and barrels
Silicon bronze pentahead security
bolt
Rounded edges for safety
Lifting provisions
Grounding provisions
Junction mounting plate with
provisions for mounting junction
modules
Cabinet sizes available for
single-phase and three-phase
applications, accommodating
optional 2-, 3-, 4-, 5-, or 6-point
junctions rated 15, 25, or 35 kV, at
200 or 600 Amps.
Cabinet meets requirements of
ANSI C57.12.28 (American
National Standard, Pad-Mounted
Equipment--Enclosure Integrity)
Accepted by RUS
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Catolog Section
45-10
Junction Enclosures
FIGURE 1:FIGURE 1:
FIGURE 1: Single-phase junction enclosure (shown with optional switching module installed)
FIGURE 1:FIGURE 1:
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Junction enclosures are available with
the following optional features and
accessories:
Stainless steel all-welded
construction meeting requirements
of ANSI C57.12.29 (American
National Standard, Pad-Mounted
Equipment--Enclosure Integrity for
Coastal Environments)
Fault indicator provisions
Hold down cleats
2-, 3-, 4-, 5-, or 6-point junctions
rated 15, 25, or 35 kV, at 200
or 600 Amps.
Contact the factory to discuss
additional options and design
variations that may be available to
satisfy special requirements.
Document: 1031
Revision: 02
Issued: October 12, 2005
Copyright © 2005 Howard Industries, Inc.
1
45-10
Figure 1 and Table 1 describe
standard single-phase style junction
enclosures. Figure 2 and Table 2
describe standard three-phase style
junction enclosures. In addition to
standard junction enclosures, Howard
Industries can provide custom
designs for special applications.
Contact the factory to discuss our
custom design capabilities including
variations in overall dimensions,
junction mounting methods,
construction materials, finishes, and
accessories.
Junction Enclosure
B
C
6”
A
NOTE: Front view shown without hood to reveal typical junction mounting plate.
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IGURE 1:IGURE 1:
F
IGURE 1: Dimensions for standard single-phase style junction enclosures (Refer to Table 1)
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IGURE 1:IGURE 1:
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ABLE 1:ABLE 1:
T
ABLE 1: Catalog numbers, kV ratings, and nominal dimensions
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for standard single-phase style junction enclosures (Refer to Figure 1)
Catalog Number KV Rating
4526-268770-2yy 15-25 26 12.5 18.5 17.125
4530-268770-2yy 15-25 30 12.5 18.5 17.125
4548-268770-2yy 15-25 48 12.5 18.5 17.125
4526-268770-4yy 15-25-35 26 16.75 22.75 21.375
4530-268770-4yy 15-25-35 30 16.75 22.75 21.375
4548-268770-4yy 15-25-35 48 16.75 22.75 21.375
NOTE: “y” catalog number digits are assigned by factory.
Nominal Dimensions (Inches)
A B C D
31.5”
D
2
Copyright © 2005 Howard Industries, Inc. Document: 1031
Revision: 02
Issued: October 12, 2005
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