To prevent electrical shock, disconnect from power source before installing or servicing. Follow
NFPA 70E requirements. Install in suitable enclosure. Keep free from contaminants.
The following procedures are critical to the proper operation of the disconnect handle and switch.
Failure to follow these steps can result in damage to the equipment and/or serious injury or death to the
Enclosure Requiring Door Catch Bracket
Right-hand installation shown with or without enclosure door vault hardware
(Left-hand installation unavailable)
Door Catch Mounting Bracket:
L Provided with projections for welding.
L Projections can also be used as a guide for drilling holes.
L Can be used as a template to drill corresponding holes in the enclosure door.
L User to supply the hardware for fastening the bracket.
L The bracket hardware must be inaccessible to unauthorized personnel.
L Fasteners must provide the degree of ingress protection for the environmental rating of the enclosure.
Dimension K (3/4" to 1")
L When installed in any size enclosure without door vault hardware, use door catch provided with disconnect switch kit.
L When installed in small and intermediates size enclosures (15 inches to 40 inches) using door vault hardware kits
(1494F-L1, 1494F-L2 and 1494F-L3), use door catch with pivot lever provided with disconnect switch kit. Discard the door catch
supplied with the door vault hardware kit.
Dimension K (1-1/8" to 1-3/8")
L When installed in large enclosure using door vault hardware kit (1494F-L4), use the door catch assembly with the pivot lever
included with the disconnect switch. Discard the door catch supplied with the door vault hardware kit.
Mounting Bracket
Enclosure Door
Door Catch
Mounting Bracket
Door Catch
Option 1
C
E
Door Catch
TOP VIEW
Top
Door Catch (used without door
vault hardware kits)
Fuse Clip Installation (Switch Rating 200A) for 400A Class J Fuses (Cat. No. 1401-N171)
23 - 37 lb-in
2
1
2
16 - 22 lb-in
2
150 - 200 lb-in
1
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Page 12
Dimensions
Spacers /
Standoffs
Provided by
User or
Enclosure
Manufacturer
H
(Min)
JQ
Non-Fusible Disconnect Switch
R
E
D
Fusible Disconnect Switch
A
B
1-1/8”
M
C
F
1/4”
KLG
(2) - 9/32 Dia.
Spacers /
Standoffs
Provided by
User or
Enclosure
Manufacturer
Switch
Size
H
(Min)
J
ABC EFGH
R
Q
E
D
See Fuse Block
Adapter Plate Section
See Fuse Block
Adapter Plate Section
(Min)
A
B
1-1/8”
N
P
JD
KMNPQRL
M
C
F
1/4”
KLG
(3) - 9/32 Dia.
30A
60A
100A
200A
9 - 3/16”
9
9
-
3/16”
-
-
9
3/16”
5/8”
4
-
5/16”
4
-
5/16”
-
5/16”
4
-
3/4”
4
42052-195-01
DIR 10000075001 (Version 00)
1
-
1/8”
1
-
1/8”
-
1/8”
1
-
5/32”
1
-
8
6”
6”
6”
3/16”
3/8”
3/8”
3/8”
1
1
1
-
-
-
9/16”
9/16”
9/16”
2”
10
10
10
10
-
-
-
-
29/32”
1/2”
1/2”
1/2”
8
8
9
9
-
-
-
-
1/2”
1/2”
3/4”
3/4”
6
-
7/8”
6-
7/8”
-
1/8”
8
-
1/8”7/16”
8
8”
8 - 1/2”
8”
8
8”
8
8
8”
15/16”
3 - 21/32”
15/16”
15/16”
3
3
-
1/2”
-
1/2”
-
1/2”
-
21/32”
-
21/32”
-
3
3/4”
7
7
7
7
-
5/16”
-
5/16”
-
5/16”
-
1/2”
5
3”
-
7/16”
3”
5
-
7/16”
3”
-
7/16”
5
-
3”1 - 5/16”
7/16”
5
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Page 13
Installation--
)
Vault Hardware Latching (1494F-L1) - Top and Side Latching
(40 Inches Maximum Enclosure Height)
1
Latching rod may be supplied
by enclosure manufacturer
2
2
Drive-Lok Pin
1
(Optional screw
and nut included
with kit)
34
3
40 - 60 lb-in
Gasket to be installed inside door.
40 - 60 lb-in
1
Optional number of
1
150 - 200 lb-in
2
shims used (0 - 3).
More shims, more
gasket compression
23 - 37 lb-in
2
23 - 37 lb-in
3
23 - 37 lb-in
Assemble door catch
and defeater lever
actuator in center of
slots. (Parts included
with the disconnect
switch).
Adjustment may be
required (up or down
1
for interlocking to
work properly.
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Page 14
Installation--
c
f
Vault Hardware Latching (1494F-L2, -L3) -
(40 Inches Maximum Enclosure Height-1494F-L2)
(60 Inches Maximum Enclosure Height-1494F-L2, -L3)
Top and Bottom Latching or Top, Side and Bottom Latching
Vault Hardware Latching (1494F-L4 for Large Enclosures) -
(84 Inches Maximum Enclosure Height)
1
3
2
Latching rod may be
supplied by
enclosure manufacturer
1
Drive-Lok Pin
(Optional screw and
nut included with kit)
Top, Side and Bottom Latching
4
Drive-Lok Pin
(Optional screw and
nut included with kit)
2
3
4
3
40 - 60 lb-in
3
23 - 37 lb-in
Gasket to be
installed inside door.
Assemble door cat
and defeater lever
actuator in center o
slots. (Parts include
with the disconnect
switch).
Adjustment may be
required (up or dow
* When using 1494F-L1, -L2, -L4 vault hardware kits with Series A 1494F-N30, 1494F-NF30, 1494F-N60, 1494F-NF60, 1494F-N100, 1494F-NF100, 1494D-N4,
1494D-N5, 1494M-N30, 1494M-NF30, 1494M-N60, 1494M-NF60, 1494M-N100 or 1494M-NF100 it may be necessary to order adapter 1494F-N13. (Required for
Hoffman A22 Series B or later enclosures.)
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Page 16
Testing Vault Hardware Latching and Enclosure Seal
Close door against enclosure base. The door handle should
12
be in the 6 o’clock position in line with the length of the door
when fully latched and the enclosure is sealed.
Turn release screw counterclockwise and hold screw in that
position to release initial catch from beneath enclosure flange.
Handle should rotate clockwise to approximately the 9 o’clock
34
position under spring action. The locking bars should have
retracted from top and bottom of door and center latch cleared
right hand flange.
Reclose door against enclosure base. Turn door handle
counterclockwise to the 6 o’clock position. You should
hear two distinct clicks as you turn the handle.
Handle should remain in this position.
“Click”
“Click”
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Page 17
Testing Vault Hardware Latching and Enclosure Seal (Cont’d)
Return to Step 3 to open door. Close the
56
door on the base and turn the handle to
the 6 o’clock position. Door should be
sealed securely to the enclosure base.
Close the door and turn the door handle counterclockwise until the first “click”
is heard. Move the disconnect handle to the ON position (do not force). If the
disconnect handle can be moved, the defeater lever actuator is properly adjusted.
Continue rotating door handle to fully closed position (6’oclock).
“Click”
Move defeater lever actuator upward
to allow disconnect handle to be turned
to on position later.
Move door catch downward to allow
operation of handle relative to door
latching handle sooner.
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Page 18
Bulletin 1494F Disconnect Switch Kit
Disconnect Kit
Disconnect Switch and Handle
with Mechanism
Fuse Block
with Adapter Plate
Cat No.
Switch and Handle with Right Hand Mechanism
(Non-Fusible and Fusible)
1494F-N30 (30A)
1494F-N60 (60A)
1494F-N100 (100A)
1494F-N200 (200A)