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Overview
Emergency Power Off System
The Emergency Power Off (EPO) System consists of one or more wall-mounted, push-button EPO boxes.
Each EPO box provides a single point of equipment shutdown for up to eight APC devices and one
third-party device (such as an upstream breaker), using Normally Open (NO) contact closure connections.
An EPO box can be cascaded with other EPO boxes to support multiple points of equipment shutdown.
Note: Although the EPO is designed specically for APC products, the system can be used
for tripping any devices that fall within its parameters. See “Specications“ to conrm
proper application. Install the EPO according to the instructions in this manual.
EPO Box Components
1
Flag
2
Button
3
Shield
4
Knockouts
5
Mounting holes
6
Blanking panels
7
Wire anchors
8
Auxiliary device
terminal
9
Device terminal block
10
Cascading jacks
11
Wiring check points
12
Ground stud
13
Cable clamps
5
6
7
8
9
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Emergency Power Off System Installation and Operation
990–1611C-001