External Accessories
69
Cell Switches
CAUTION: Do not attempt to install an accessory with
the breaker “Closed” or “Charged”. Make certain breaker
is “Open” and “Discharged” as shown above. Personal
injury or mechanical damage may occur.
Cell Switch Accessory Kit
Cell Switches on Drawout Mechanism Cell switches are used
on drawout SB breakers as signal contacts to indicate when
the moveable drawout element is in a position other than the
connected position. The position of the moveable drawout
element is indicated by the open/closed status of the cell
switches as follows:
“A” or “NO” contacts - Open when the moveable drawout
element is in the test, unlocked, or
withdrawn position.
Closed when the moveable drawout
element is in the connected position.
“B” or “NC” contacts - Closed when the moveable drawout
element is in the test, unlocked, or
withdrawn position.
Open when the moveable draw out
element is in the connected position
A maximum of four “A” and “B” cell switches may be installed
in a breaker. The switch contact ratings are given in the
following table.
Switch Contact Ratings
Supply Voltage
Ampere Rating
120 VAC
240 VAC
480 VAC
24 VDC
125 VDC
10 Amps
10 Amps
6 Amps
3 Amps
0.6 Amps
The cell switches are installed on the left-rear flange of the
stationary drawout element, between the bus supports
The cell switch assembly should be installed prior to the
moveable drawout element being installed in the switchboard.
If the drawout elements have already been installed, the
moveable drawout element will have to be placed in the fully
withdrawn position or removed from the switch board to al low
access to the installation location.
To install the cell switch assembly, attach assembly to the left-
rear flange with two (2) 8/32" panhead screws with lock
washers in the threaded holes on the flange.
Cell Switches are installed on the left-rear flange of the cradle
assembly or drawout element
Summary of Contents for SBA 1200
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