®
OPERATOR ADAPTER A21WHAMTA
Installation Instructions for Westinghouse Type AMT Below−Handle Mechanisms
for Disconnect Switches And Circuit Breakers, and Flex Shaft Handle
Mechanisms for Circuit Breakers (For parts list, see page 2)
For floor−mounted enclosures with disconnect
on the right flange, see pages 3−6
Master
Door
For one through six door free−standing enclosures with
the disconnect on the right flange, see pages 7−10
Master
Door
For floor−mounted enclosures with the disconnect
on the centerpost, see pages 11−14
Master
Door
Rev. B 113357
E 2005 Hoffman Enclosures Inc.
P/N 99401965
87569093
WARNING
The functions, fits, and clearances of the installation described hereon are calculated from information supplied by the manufactures of the equipment to be installed. Be certain to check the function, fits, and clearances of all equipment both before and after
installation to assure that is operates properly and safely and meets all applicable codes, standards, and regulations.
In the event the completed installation does not function properly or fails to meet any such codes, standards, or regulations, do
not attempt to make alterations or operate the equipment. Report such facts immediately to:
Customer Service Dept.
Hoffman Enclosures Inc.
2100 Hoffman Way
Anoka, MN 55303−1745
(763) 422−2211
PARTS LIST
Operator Adapter, Catalog Number A21WHAMTA, Westinghouse
Type AMT Below−Handle Mechanisms and Flex Shaft Mechanisms
Item No. . . . . .
1 ............
2 ............
3 ............
4 ............
5 ............
6 ............
7 ............
8 ............
9 ............
10 . . . . . . . . . . .
11 . . . . . . . . . . .
12 . . . . . . . . . . .
13 . . . . . . . . . . .
14 . . . . . . . . . . .
15 . . . . . . . . . . .
16 . . . . . . . . . . .
17 . . . . . . . . . . .
Part Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adapter Plate, West. AMT . . . . . . . . . . . . . . . . . .
Gasket, Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw, 1/4−20x1/2 Pan Head . . . . . . . . . . . . . . . .
Slide Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shoulder Collar . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw, 1/4−20x7/8 Hex Head . . . . . . . . . . . . . . . .
Lockwasher 1/4 Spring . . . . . . . . . . . . . . . . . . . . .
Washer, Flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lockwasher 1/4 Int. . . . . . . . . . . . . . . . . . . . . . . . .
Nut 1/4−20 Hex . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interlock Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw, 10−32x3/8 Pan Head . . . . . . . . . . . . . . . .
Lockwasher, #10 Int. . . . . . . . . . . . . . . . . . . . . . . .
Label (extra) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Slide Arm (alternate) . . . . . . . . . . . . . . . . . . . . . . .
Plate, Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Instruction . . . . . . . . . . . . . . . . . . . . . .
Part No. . . . . . . . .
26264001 . . . . . . .
26216011 . . . . . . .
99401031 . . . . . . .
26265001 . . . . . . .
26149001 . . . . . . .
99401030 . . . . . . .
99401318 . . . . . . .
22101003 . . . . . . .
99401300 . . . . . . .
99401406 . . . . . . .
26199002 . . . . . . .
99401007 . . . . . . .
99401307 . . . . . . .
26147001 . . . . . . .
26391001 . . . . . . .
27206002 . . . . . . .
99401965 . . . . . . .
Quantity
1
1
4
1
1
1
1
2
2
2
1
2
2
1
1
1
1
IMPORTANT NOTES
1. Use adapter plate with mounting studs (item 1) for all below−handle AMT mechanisms and for
AMT flex shaft cable mechanisms for F frame circuit breakers. Use Adapter plate without studs (item
16) for all other flex shaft cable mechanisms.
2. Use slide arm (item 4) for all AMT below−handle mechanisms and AMT flex shaft cable mechanisms. Use slide arm (item 15) only for AMT flex shaft mechanisms for F frame circuit breakers.
2
E 2005 Hoffman Enclosures Inc.
87569093
INTRODUCTION
Master
Door
This installation instruction is for Westinghouse
Below−Handle AMT and Flex Shaft AMT
mechanisms. These mechanisms are for
disconnect switches and circuit breakers
mounted in Hoffman two door, floor−mounted,
enclosures with the disconnect on the right
flange.
INSTALLATION STEPS
Step 1 − Install adapter plate (item 1 or 16) and plate gasket (item 2) on the inside of the enclosure, behind the
rectangular opening provided. Secure in place with four screws (item 3).
Step 2 − Assemble the Westinghouse “AMTOP” operating handle to the mounting plate which was installed in the
enclosure in step 1. Omit cap screw and lockwasher which fits into bottom hole of “AMTOP” operating handle.
Step 3 − Install the slide arm (item 4 or 15) over the projecting part of the “AMTOP” operating handle as shown.
Note that bottom holes in slide arm are not on center of slide arm. Place the smaller diameter end of the shoulder collar (item 5) through the oval slot in the slide arm. Install long cap screw (item 6) with lockwasher (item 7)
through shoulder collar into the bottom mounting hole of the “AMTOP” operating handle and tighten. The slide
arm should move up and down smoothly. Install interlock lever extension per Westinghouse instructions.
Step 4 − Attach the bottom of the slide arm (item 4 or 15) to the offset arm of the lock release mechanism. Use
two flat washers (item 8), two lockwashers (item 9), and two hex nuts (item 10). Do not tighten until parts are
adjusted (see step 5B)
Step 5 − The handle safety lock release mechanism is adjustable in two places.
A) Check the adjustment of the factory installed roller bracket. The door latch should hit against the
latch stop portion of the roller bracket when the door is closed and latched. Adjust up or down if
necessary. The attached mechanism will then provide the necessary up−down motion required to
operate the release mechanism in the “AMTOP” operating handle.
B) Adjust the length of the slide arm assembly. With proper adjustment of the slide arm, the safety lock
(in “AMTOP” operating handle) should release just before the master door is fully latched. Lengthen
slide arm if safety lock releases too soon. Shorten slide arm if safety lock releases too late.
Step 6 − Attach the cover interblock blade (item 11), provided by Hoffman, to the tapped spacer on the door using the bottom set of mounting holes. Used the two screws (item 12) and lockwashers (item 13). The cover interlock blade prevents the door from being opened when the “AMTOP” operating handle is in the “ON” position.
This blade may be adjusted up or down to hook properly on the interlock lever extension. The blade (item 11)
must be positioned so the bottom edge of blade clears the interlock lever extension by 1/4 inch when “AMTOP”
operating handle is in extreme “OFF” position.
Step 7 − Drill and tap holes in panel for disconnect required. See table for location of disconnect centerlines.
See Westinghouse instructions for location and size of mounting holes.
Step 8 − Install panel in enclosure.
Step 9 − Mount disconnect switch or circuit breaker on panel using Westinghouse instructions and parts.
87569093
E 2005 Hoffman Enclosures Inc.
3
For Two Door, Floor−Mounted Enclosures With Disconnect on Right Flange
4
E 2005 Hoffman Enclosures Inc.
87569093
For Two Door, Floor−Mounted Enclosures With Disconnect on Right Flange
87569093
E 2005 Hoffman Enclosures Inc.
5
For Two Door, Floor−Mounted Enclosures With Disconnect on Right Flange
AMT PIVOT MECHANISM
(BELOW−HANDLE)
FIXED WIDTH
VARIABLE WIDTH
WHEN
ENCLOSURE IS
60.12” HIGH
X
X
Y
Y
30, 60, 100 AMP TYPE DS SWITCH
3.22
5.47 MAX.
9.81
15.81
200 AMP TYPE DS SWITCH
4.63
6.81 MAX.
10.00
16.00
E, EHB, FB, HFB, FB TRI−PAC CIRCUIT
BREAKERS MCP (SIZE 0−4)
3.22
5.47 MAX.
9.81
15.81
JB, KB CIRCUIT BREAKERS
MCP (250 AMP)
3.22
5.47 MAX.
9.44
15.44
JA, KA, HKA, DA, LB, LBB, HLB, CIRCUIT
BREAKERS MCP (400 AMP)
3.22
5.47 MAX.
LA, HLA, LC, HLC, LA TRI−PAC CIRCUIT
BREAKERS
NONE
6.81 MAX.
WESTINGHOUSE
S
G O S DISCONNECT
SCO
C
6
E 2005 Hoffman Enclosures Inc.
WHEN
ENCLOSURE IS
72.12” HIGH
ÎÎÎÎÎÎ
ÎÎÎÎÎÎ
ÎÎÎÎÎÎ
9.44
15.44
DO NOT INSTALL
16.75
87569093
INTRODUCTION
Master
Door
This installation instruction is for Westinghouse
Below−Handle AMT and Flex Shaft AMT
mechanisms. These mechanisms are for
disconnect switches and circuit breakers
mounted in Hoffman one through six door,
free−standing, enclosures with the disconnect
on the right flange.
INSTALLATION STEPS
Step 1 − Install adapter plate (item 1 or 16) and plate gasket (item 2) on the inside of the enclosure, behind the
rectangular opening provided. Secure in place with four screws (item 3).
Step 2 − Assemble the Westinghouse “AMTOP” operating handle to the mounting plate which was installed in the
enclosure in step 1. Omit cap screw and lockwasher which fits into bottom hole of “AMTOP” operating handle.
Step 3 − Install the slide arm (item 4 or 15) over the projecting part of the “AMTOP” operating handle as shown.
Note that bottom holes in slide arm are not on center of slide arm. Place the smaller diameter end of the shoulder collar (item 5) through the oval slot in the slide arm. Install long cap screw (item 6) with lockwasher (item 7)
through shoulder collar into the bottom mounting hole of the “AMTOP” operating handle and tighten. The slide
arm should move up and down smoothly. Install interlock lever extension per Westinghouse instructions.
Step 4 − Attach the bottom of the slide arm (item 4 or 15) to the offset arm of the lock release mechanism. Use
two flat washers (item 8), two lockwashers (item 9), and two hex nuts (item 10). Do not tighten until parts are
adjusted (see step 5B)
Step 5 − The handle safety lock release mechanism is adjustable in two places.
A) Check the adjustment of the factory installed roller bracket. The door latch should hit against the
latch stop portion of the roller bracket when the door is closed and latched. Adjust up or down if
necessary. The attached mechanism will then provide the necessary up−down motion required to
operate the release mechanism in the “AMTOP” operating handle.
B) Adjust the length of the slide arm assembly. With proper adjustment of the slide arm, the safety lock
(in “AMTOP” operating handle) should release just before the master door is fully latched. Lengthen
slide arm if safety lock releases too soon. Shorten slide arm if safety lock releases too late.
Step 6 − Attach the cover interblock blade (item 11), provided by Hoffman, to the tapped spacer on the door using the bottom set of mounting holes. Used the two screws (item 12) and lockwashers (item 13). The cover interlock blade prevents the door from being opened when the “AMTOP” operating handle is in the “ON” position.
This blade may be adjusted up or down to hook properly on the interlock lever extension. The blade (item 11)
must be positioned so the bottom edge of blade clears the interlock lever extension by 1/4 inch when “AMTOP”
operating handle is in extreme “OFF” position.
Step 7 − Drill and tap holes in panel for disconnect required. See table for location of disconnect centerlines.
See Westinghouse instructions for location and size of mounting holes.
Step 8 − Install panel in enclosure.
Step 9 − Mount disconnect switch or circuit breaker on panel using Westinghouse instructions and parts.
87569093
E 2005 Hoffman Enclosures Inc.
7
For One Through Six Door, Free−Standing Enclosures With Disconnect on Right Flange
8
E 2005 Hoffman Enclosures Inc.
87569093
For One Through Six Door, Free−Standing Enclosures With Disconnect on Right Flange
87569093
E 2005 Hoffman Enclosures Inc.
9
For One Through Six Door, Free−Standing Enclosures With Disconnect on Right Flange
AMT PIVOT MECHANISM
(BELOW−HANDLE)
FIXED WIDTH
VARIABLE WIDTH
WHEN
ENCLOSURE IS
72.12” HIGH
X
X
Y
Y
Y
30, 60, 100 AMP TYPE DS SWITCH
3.22
5.47 MAX.
11.81
17.81
20.81
200 AMP TYPE DS SWITCH
4.63
6.81 MAX.
12.00
18.00
21.00
E, EHB, FB, HFB, FB TRI−PAC CIRCUIT
BREAKERS MCP (SIZE 0−4)
3.22
5.47 MAX.
11.81
17.81
20.81
JB, KB CIRCUIT BREAKERS
MCP (250 AMP)
3.22
5.47 MAX.
11.44
17.44
20.44
JA, KA, HKA, DA, LB, LBB, HLB, CIRCUIT
BREAKERS MCP (400 AMP)
3.22
5.47 MAX.
11.44
17.44
20.44
LA, HLA, LC, HLC, LA TRI−PAC CIRCUIT
BREAKERS
NONE
6.81 MAX.
12.75
18.75
21.75
MA, HMA, MC, HMC, NB, HNB, NC, HNC,
NB TRI−PAC CIRCUIT BREAKERS
NONE
6.81 MAX.
DO NOT INSTALL
18.75
21.75
WESTINGHOUSE
S
G O S DISCONNECT
SCO
C
10
ÎÎÎÎÎÎ
ÎÎÎÎÎÎ
ÎÎÎÎÎÎ
E 2005 Hoffman Enclosures Inc.
WHEN
ENCLOSURE IS
84.12” HIGH
WHEN
ENCLOSURE IS
90.12” HIGH
87569093
INTRODUCTION
Master
Door
This installation instruction is for Westinghouse
Below_Handle AMT and Flex Shaft AMT mechanisms.
These mechanisms are for disconnect switches and
circuit breakers mounted in Hoffman two door,
floor−mounted, enclosures with the disconnect on the
centerpost.
INSTALLATION STEPS
Step 1 − Install adapter plate (item 1 or 16) and plate gasket (item 2) on the inside of the enclosure, behind the
rectangular opening provided. Secure in place with four screws (item 3).
Step 2 − Assemble the Westinghouse “AMTOP” operating handle to the mounting plate which was installed in the
enclosure in step 1. Omit cap screw and lockwasher which fits into bottom hole of “AMTOP” operating handle.
Step 3 − Cut 2 1/2 inches off bottom end of slide arm (item 4 or 15). Bottom end of slide arm has rectangular
holes only.
Step 4 − Install the slide arm (item 4 or 15) over the projecting part of the “AMTOP” operating handle as shown.
Note that bottom holes in slide arm are not on center of slide arm. Place the smaller diameter end of the shoulder collar (item 5) through the oval slot in the slide arm. Install long cap screw (item 6) with lockwasher (item 7)
through shoulder collar into the bottom mounting hole of the “AMTOP” operating handle and tighten. The slide
arm should move up and down smoothly. Install interlock lever extension per Westinghouse instructions.
Step 5 − Attach the bottom of the slide arm (item 4 or 15) to the offset arm of the lock release mechanism. Use
two flat washers (item 8), two lockwashers (item 9), and two hex nuts (item 10). Do not tighten until parts are
adjusted.
Step 6 − Adjust the length of the slide arm assembly. With proper adjustment of the slide arm, the safety lock (in
“AMTOP” operating handle) should release just before the master door is fully latched. Lengthen slide arm if
safety lock releases too soon. shorten slide arm if safety lock releases too late.
Step 7 − Attach the cover interblock blade (item 11), provided by Hoffman, to the tapped spacer on the door using the bottom set of mounting holes. Used the two screws (item 12) and lockwashers (item 13). The cover interlock blade prevents the door from being opened when the “AMTOP” operating handle is in the “ON” position.
This blade may be adjusted up or down to hook properly on the interlock lever extension. The blade (item 11)
must be positioned so the bottom edge of blade clears the interlock lever extension by 1/4 inch when “AMTOP”
operating handle is in extreme “OFF” position.
Step 8 − Drill and tap holes in panel for disconnect required. See table for location of disconnect centerlines.
See Westinghouse instructions for location and size of mounting holes.
Step 9 − Install panel in enclosure.
Step 10 − Mount disconnect switch or circuit breaker on panel using Westinghouse instructions and parts.
87569093
E 2005 Hoffman Enclosures Inc.
11
For Two Door, Floor−Mounted Enclosures With Disconnect on Centerpost
12
E 2005 Hoffman Enclosures Inc.
87569093
For Two Door, Floor−Mounted Enclosures With Disconnect on Centerpost
87569093
E 2005 Hoffman Enclosures Inc.
13
For Two Door, Floor−Mounted Enclosures With Disconnect on Centerpost
AMT PIVOT MECHANISM
(BELOW−HANDLE)
FIXED WIDTH
VARIABLE WIDTH
WHEN
ENCLOSURE IS
60.12” HIGH
X
X
Y
Y
30, 60, 100 AMP TYPE DS SWITCH
4.72
6.97 MAX.
9.81
15.81
200 AMP TYPE DS SWITCH
6.12
8.31 MAX.
10.00
16.00
E, EHB, FB, HFB, FB TRI−PAC CIRCUIT
BREAKERS MCP (SIZE 0−4)
4.72
6.97 MAX.
9.81
15.81
JB, KB CIRCUIT BREAKERS
MCP (250 AMP)
4.72
6.97 MAX.
9.44
15.44
JA, KA, HKA, DA, LB, LBB, HLB, CIRCUIT
BREAKERS MCP (400 AMP)
4.72
6.97 MAX.
LA, HLA, LC, HLC, LA TRI−PAC CIRCUIT
BREAKERS
NONE
8.31 MAX.
WESTINGHOUSE
S
G O S DISCONNECT
SCO
C
14
E NIL Hoffman Enclosures Inc.
WHEN
ENCLOSURE IS
72.12” HIGH
ÎÎÎÎÎÎ
ÎÎÎÎÎÎ
ÎÎÎÎÎÎ
9.44
15.44
DO NOT INSTALL
16.75
87569093
87569093
E 2005 Hoffman Enclosures Inc.
15
®
Hoffman Enclosures Inc.
2100 Hoffman Way
Anoka, MN 55303−1745
(763) 422−2211
www.hoffmanonline.com
Pentair Electronic Packaging
170 Commerce Drive
Warwick, RI 02886
(401) 732−3770
www.pentair−ep.com
Mexico
Pentair Enclosures, S. de R.L. de C.V.
Federico T. de la Chica No. 8 Piso 4 A
Circuito Comercial Plaza Satélite
Ciudad Satélite,
Naucalpan, México C.P. 53100
011−52−55−5393−8263
Canada
Hoffman−Schroff
111 Grangeway Avenue, Suite 504
Scarborough, Ontario M1H 3E9
(416) 289−2770
1−800−668−2500 (Canada only)
Germany
Schroff GmbH
Langenalber Str. 96−100
75334 Straubenhardt
49 (07082) 794−0 www.schroff.de
Great Britain
Schroff UK Ltd.
Maylands Avenue
Hemel Hempstead, Herts HP2 7DE
44 (01442) 240471 www.schroff.co.uk
Sweden
Schroff Scandinavia AB
Box 2003
12821 Skarpnäck
46 08683 61 00 www.schroff.se
France
Schroff Sas
Z.I., 4 rue du Marais
67660 Betschdorf
33 03 88 90 64 90 www.schroff.fr
Italy
Schroff srl
Viale Milano, 119
21013 Gallarate (Varese)
39 0331 79 40 03
Singapore
Hoffman−Schroff Pte. Ltd.
#01−68/71 German Centre
25 International Business Park
Singapore 609916
65 5 62−78 90
Japan
Schroff K.K.
Nisso No. 13 Bldg. 4F
2−5−1 Shinyokohama
Kohoku−Ku, Yokohama shi
Kanagawa 222−0033
81 (045) 476−02 81
Finland
Schroff Scandinavia AB
Peräsimentie 8
03100 Nummela
358 09 222 68 00
Norway
Schroff Scandinavia AB
Bjoernerudveien 24
1266 Oslo
47 022 76 33 60
16
E 2005 Hoffman Enclosures Inc.
87569093