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Arcflash Reduction Maintenance Switch
Application and Installation
Note: If the mode selector switch, indicator light, and battery holder will be
mounted on the cell door, the door should be removed from the cell to pre-
vent warping as the mounting holes are being created and to prevent metal
fragments from falling into the cell.
Basic Guidelines for the Arcflash Reduction Maintenance
Switch Mode Selector Switch, Indicator Light, and
Battery Holder Installation
1. The mounting location should provide easy access to the
mode selector switch and to lock out/tag out (LOTO) device
when necessary.
2. The mounting location should provide ample clearance so the
breaker can be racked out and in without damaging the mode
selector switch, indicator light, or battery holder.
DO NOT PERFORM ANY MAINTENANCE: INCLUDING BREAKER
CHARGING, CLOSING, TRIPPING, OR ANY OTHER FUNCTION WHICH
COULD CAUSE SIGNIFICANT MOVEMENT OF THE BREAKER WHILE
IT IS ON THE EXTENSION RAILS. DOING SO MAY CAUSE THE
BREAKER TO SLIP FROM THE RAILS AND FALL, POTENTIALLY
CAUSING SEVERE PERSONAL INJURY TO THOSE IN THE VICINITY.
DO NOT LEAVE THE BREAKER IN AN INTERMEDIATE POSITION IN
THE SWITCHGEAR CELL. ALWAYS LEAVE IT IN THE CONNECTED,
DISCONNECTED, OR (OPTIONAL) TEST POSITION. FAILURE TO DO
SO COULD LEAD TO IMPROPER POSITIONING OF THE BREAKER
AND FLASHOVER, CAUSING DEATH, SERIOUS PERSONAL INJURY,
AND / OR PROPERTY DAMAGE.
3. If the cell door is selected, the mounting location should allow
the cell door to completely close without the mode selector
switch, indicator light, or battery holder interfering with the
breaker or other cell components.
4. The mounting location should be close enough to the breaker
so that the mode selector switch harness can be routed and
connected to the RSM while leaving a service loop for racking
purposes. (If a longer mode selector switch harness is
needed, contact your Eaton Representative.)
5. The mounting location should allow the mode selector switch
harness to stay clear of the breaker during racking.
IL01906001E
WARNING
WARNING
For more information visit: www.EatonElectrical.com
Effective: May 2005
Figure 14. Typical Mounting Location Allowing for the Basic
Guidelines.
A. Determine the best location for the mode selector switch.
Note that the harness connecting the mode selector switch to
the indicator light is short so the indicator light must be
installed in close proximity to the mode selector switch.
Mark the center of the mounting area, then drill a 0.886"
(22.5 mm) hole through the mounting surface. Using a 1.25"
(31.7 mm) Greenlee Slug Buster
mounting hole for the mode selector switch. Be sure to
remove all metal shavings that have dropped into the breaker
or cell.
Note: An appropriate hole saw can be used to cut the holes for the mode
selector switch, indictor light, and battery holder if a Greenlee Slug Buster
is not available. Be sure to remove all metal shavings that have dropped
into the breaker or cell.
Figure 15. Arcflash Reduction Maintenance Switch Mode Selector
Switch Hole Being Cut in the Mounting Surface.
B. Determine the best location for the indicator light. Mark the
center of the mounting area, then drill a 0.406" (22.5mm)
hole through the mounting surface. Using a 0.500" Greenlee
®
Slug Buster
Knock-out Punch, cut the mounting hole for the
mode selector switch. Be sure to remove all metal shavings
that have dropped into the breaker or cell.
Instructional Literature
MODE SELECTOR SWITCH
INDICATOR LIGHT
BATTERY HOLDER
®
Knock-out Punch, cut the
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