IL01906001E
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Instructional Literature
Effective: May 2005
Page
5
Arcflash Reduction Maintenance Switch
Application and Installation
2. General Arcflash Reduction Maintenance
Switch Installation
Note:
The Arcflash Reduction Maintenance Switch is designed to work
with Eaton “10” series Digitrip trip units (510, 610, 810, and 910). If the
breaker has not been retrofitted with a “10” series trip unit, contact your
Eaton Representative for more information.
Step 1: Recommended Specialty Tools for Arcflash
Reduction Maintenance Switch Installation
Figure 3. Recommended Specialty Tools for Arcflash Reduction
Maintenance Switch Installation.
1. Greenlee Slug Buster
®
Knock-out Punch kit (P/N 7238SB) and
an additional 1.25” (31.8 mm) punch is required
(P/N 730BB-1.25).
2. Eaton Octagonal Wrench (P/N E22CW).
3. Eaton Arcflash Reduction Maintenance Switch Bench Test
Device (P/N 9A10164G01).
Step 2: General Breaker Preparation
Before attempting to remove the breaker from the cell or perform
any retrofit / installation operation, be sure to read and understand
the Safety Precautions section of your original Digitrip Retrofit
manual. In addition, be sure to read and understand the “Instruc-
tions for the Application of Digitrip RMS Retrofit Kits on Power
Circuit Breakers” (Retrofit Application Data - Publication AD 33-
855-4), supplied with the original Digitrip Retrofit Kit.
A. Trip the breaker and remove it from the cell. Move the
breaker to a clean, well-lit work area.
Note:
It is the responsibility of the installer to insure that the breaker and all
original components are in good condition. Visually inspect all breaker
components for signs of damage or wear. If any signs of damage or wear
are detected, secure the necessary replacement parts before beginning the
Arcflash Reduction Maintenance Switch installation process.
To begin the Arcflash Reduction Maintenance Switch installation
process, refer to the components list near the end of this manual.
The components and hardware listed will be used to complete
each step in the Arcflash Reduction Maintenance Switch installa-
tion process.
WARNING
COMPLETELY READ AND UNDERSTAND ALL INSTRUCTIONS
BEFORE ATTEMPTING ANY INSTALLATION, OPERATION, MAINTE-
NANCE, OR MODIFICATION OF THESE BREAKERS.
WARNING
ALWAYS TURN OFF AND LOCK OUT THE POWER SOURCE FEEDING
THE BREAKER PRIOR TO ATTEMPTING ANY INSTALLATION, MAIN-
TENANCE, OR MODIFICATION OF THE BREAKER. DO NOT USE THE
CIRCUIT BREAKER AS THE SOLE MEANS FOR ISOLATING A HIGH
VOLTAGE CIRCUIT. FOLLOW ALL LOCKOUT AND TAGGING RULES
OF THE NATIONAL ELECTRIC CODE AND ALL OTHER APPLICABLE
CODES, REGULATIONS, AND WORK RULES.
WARNING
DO NOT ATTEMPT TO INSTALL OR PERFORM MAINTENANCE ON
EQUIPMENT WHILE IT IS ENERGIZED. SEVERE PERSONAL INJURY
OR DEATH CAN RESULT FROM CONTACT WITH ENERGIZED EQUIP-
MENT. VERIFY THAT NO VOLTAGE IS PRESENT BEFORE PROCEED-
ING.
WARNING
FOR DRAWOUT BREAKERS, TRIP (OPEN), AND THEN REMOVE THE
BREAKER TO A WELL-LIT WORK AREA BEFORE BEGINNING WORK.
