Brochures and Data Sheets
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of this information or for any errors or omissions. Information and specifications are subject to change without notice.
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Emerson Network Power - Global Headquarters
1050 Dearborn Drive
Columbus, OH 43085
Tel +1 614 888 0246
EmersonNetworkPower.com
ASCO Power Technologies - Firetrol Brand Products
111 Corning Road, Suite 120
Cary, NC 27518
Tel +1 1 460 5200 FaY +1 1 460 5250
Firetrol.com
CB900-50 (B)
attached adjacent to the transfer switch enclosure.
The operating handle has a mechanical interlock
so that the enclosure door cannot be opened with
the isolating disconnect switch in the ON position.
Switch Features
• Allows bypa
ss-isolation without load
interruption.
• Bypass switch and transfer switch have
identical electrical ratings.
• Heavy duty mechanical interlocks prevent
undesirable operation.
• Bypass contacts carry current only during
bypass mode.
• Bypass and isolation handles are perma-
nently mounted.
• Bypass switch is fully rated for use as a
manual 3-position transfer switch.
• Bypass and isolation functions are simple,
requiring a total of two operating handles.
• No toggle switches, push buttons, selector
switches or levers are required for bypass-
isolation operation.
• Mechanical indicators show bypass and
transfer switch positions.
Control
Automatic transfer switch control is provided by
an ASCO
®
Group 5 Microprocessor based control
panel. The control panel features a built-in keypad
and four-line LCD display, allowing all monitoring
and control functions to be done with the enclosure
door closed. The six key keypad allows access to the
easily navigated menu system to monitor system
status or to adjust settings. A Transfer/Bypass panel
provides a single line connection diagram with LED
indication for switch positions and power source
information. Also included on the panel is a lamp
test push-button and Auto-Run engine selector
switch.
Bypass and Isolation Operating Handles