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Siemens SB Series Information And Instruction Manual page 52

Encased systems breakers 4000 ampere frame rating
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External Accessories
Drawout Safety Shutters
Hazardous Voltage.
Will cause severe injury or death.
Do not attempt to install Shutters
with voltage present.
CAUTION: Siemens recommends Shutter installation
prior to placing Stationary Drawout Element into a
switchboard or panelboard.
Drawout Safety Shutters Accessory Kit
Drawout Safety Shutters
Drawout safety shutters prevent inadvertent contact with the
primary stabs. As the moveable drawout element is moved
from the unlocked to the withdrawn position, the shutters
automatically cover the primary stabs. The shutters auto­
matically retract to expose the stabs, as the moveable
drawout element is moved from the withdrawn to the un­
locked position.
60
A
DANGER
The drawout safety shutters kit consists of two shutter
assemblies and mounting hardware. The shutters are
symmetrical so that either shutter can be used to cover the
line or load stabs. The shutters are installed on the sides of
the stationary drawout.
If practical, the drawout safety shutters should be installed
prior to the stationary drawout element being installed in the
switchboard . If the drawout elements have already been
installed, the moveable drawout element will have to be
removed from the switchboard to allow access to the
installation location.
To install the safety shutters:
i
)
(4)
.
I nstall four
shutter mounting assemblies . (T wo (2) per
side, use #8-37 hardware . )
2.) Secure the shutter to the shutter mounting assemblies. One
top and one bottom . (Use #1 0-32 hardware.)

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