Hoffman Operator Adapters ABL Installation Instructions

Below you will find brief information for ABL 1494V, ABL 1494C, ABL 140G, ABL 140U. These operator adapters are designed for Allen-Bradley large handle disconnect switches and circuit breakers. They are suitable for floor-mounted enclosures with the disconnect on the right flange or centerpost, and for one- to six-door free-standing enclosures with the disconnect on the right flange. The document provides step-by-step instructions for installation, including mounting the adapter plate, slide arm, and door catch. It also details the adjustment procedures to ensure proper safety lock release and door latching.

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OPERATOR ADAPTER ABL
Installation Instructions for Allen-Bradley Bulletin 1494V,
1494C, 140G and 140U Large Handle Disconnect Switches
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&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
P/N 89114651
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Parts List
Operator Adapter, Catalog Number ABL, for Allen-Bradley Bulletins 1494V, 1494C, 140G and 140U Disconnects
Item No.
1
-2-
Description
Part No.
Qty.
ADAPTER PLATE, LARGE
879 32136
1
2
PLATE GASKET
89109613
1
3
SCREW, 1/4-20X1/2 PAN HEAD
99401031
4
4
SLIDE ARM, ASSEMBLY
27111002
1
5
SHOULDER COLLAR, 3/4 DIAMETER
27112001
1
6
SCREW, 5/16-18X1 HEX HEAD
99401081
1
7
WASHER FLAT
22101003
2
8
LOCK WASHER, 1/4 INTERNAL
TEETH
99401300
2
9
NUT, HEX 1/4-20
99401406
2
10
DOOR CATCH
23101002
1
11
SCREW, 10-32X3/8 PAN HEAD
99401007
2
12
LOCK WASHER, #10 INTERNAL
TEETH
99401307
2
13
NYLON WASHER
23132003
4
14
LOCKWASHER, 1/4 SPRING
99401305
1
15
INSTALLATION INSTRUCTIONS
89114651
1
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
89115481
INTRODUCTION
This installation instruction is for the Allen−Bradley Large Handle.
Bulletin 1494V, 1494C, 140G and 140U mechanisms.
These mechanisms are for disconnect switches and circuit breakers mounted in Hoffman two door, floor−mounted with cutout on
right hand flange or centerpost and one through six door, free−standing enclosures with the disconnect on the right flange.
ALLEN-BRADLEY SMALL HANDLE INSTALLATION STEPS
See Figure 1 for 1494V and 140G Variable Depth or Figure 2 for 1494C, 140G and 140U Cable Control.
Step 1
Install adapter plate (item 1) and plate gasket (item 2) on the inside of the enclosure, behind the rectangular opening provided.
Gasket side with PSA should be attached to the Adapter Plate. Secure in place with four screws (item 3), and four nylon washers
(item 13).
Step 2 − Install Large Handle
(1494V, 1494C, 140G and 140U) Assemble the Allen-Bradley operating mechanisem and 1494F-M2 or 1494F-S2 large handle
to the adapter plate which was installed in Step 1. Omit cap screw and lockwasher which fit into bottom hole of Allen−Bradley
operating handle.
Step 3 − Install Slide Arm and Defeater Bracket
(1494V and 140G Varaiable Depth) Install slide arm (item 4) through the hole in bottom of Allen−Bradley spring bracket. Put
Allen−Bradley defeater bracket through slot in the end of the slide arm and mount per Allen−Bradley instructions. Place the
smaller diameter end of 3/4 diameter shoulder collar (item 5) through oval slot in slide arm. Install longer cap screw (item 6) with
lockwasher (item 14) through shoulder collar into bottom mounting hole of Allen−Bradley operating handle and tighten. The slide
arm should move up and down smoothly.
(1494C, 140G and 140U Cable Control) Put Allen−Bradley defeater bracket through slide arm (item 4) end slot and mount defeater
bracket per Allen−Bradley instructions. Place the smaller diameter end of 3/4 diameter shoulder collar (item 5) through oval slot
in slide arm. Install longer cap screw (item 6) with lockwasher (item 14) through shoulder collar into bottom mounting hole of
Allen‑Bradley operating handle and tighten. The slide arm should move up and down smoothly.
Step 4
Attach the bottom of the slide arm assembly (item 4) to the offset arm of the operator release mechanism. Use two flat washers
(item 7), two lockwashers (item 8), and two hex nuts (item 9). Do not tighten until parts are adjusted. (See Step 5B).
Step 5 − The operator 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 portion of the roller
bracket when the door is closed and latched. Adjust up or down if necessary. The mechanism will then provide the necessary up−
down motion required to operate the safety lock release in the Allen−Bradley operating handle.
(B) Adjust the length of the slide arm assembly with proper adjustment of the slide arm. The safety lock (in Allen−Bradley
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 door catch (item 10) provided by Hoffman to the tapped spacer on the door using the bottom set of mounting
holes. Use two screws (item 11) and two lockwashers (item 12). The door catch prevents the door from being opened when the
Allen‑Bradley operating handle is in the “ON” position.
Step 7
Drill and tap holes in panel PER ALLEN-BRADLEY INSTRUCTIONS.
Step 8
Install panel in enclosure.
Step 9
Mount disconnect switch or circuit breaker on panel using Allen-Bradley instructions and parts. For variable depth disconnects,
find the enclosure depth dimension. See Allen−Bradley instructions to cut the connecting rod to length required and install and
adjust Allen−Bradley connecting rod per Allen−Bradley instructions.
89115481
&copy; 2018 Hoffman Enclosures Inc.
PH 763 422 2211 • nVent.com/HOFFMAN
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89115481
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Hello! I've analyzed the provided installation instructions for the nVent ABL operator adapter series, which is compatible with Allen-Bradley Bulletin 1494V, 1494C, 140G, and 140U disconnect switches. The document covers the installation steps, adjustment procedures, and mounting information including details of safety lock release and door catch integration. Feel free to ask any questions about the installation process or the features of this adapter.

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Key features

Designed for Allen-Bradley large handle disconnect switches
Suitable for various enclosure types
Includes adjustable slide arm for safety lock release
Door catch prevents opening in ON position
Step-by-step installation instructions
Detailed adjustment procedures

Frequently asked questions

This adapter is compatible with Allen-Bradley Bulletin 1494V, 1494C, 140G, and 140U mechanisms.

It can be installed in floor-mounted enclosures with the disconnect on the right-hand flange or centerpost, and free-standing enclosures with the disconnect on the right flange.

The door catch prevents the door from being opened when the Allen-Bradley operating handle is in the “ON” position.