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Operating Instructions
General Instructions
The instructions for charging the stored energy mechanism,
closing and opening the breaker, and positioning and rotating
the moveable drawout elements of the drawout-constructed
SB breakers are presented in this section. The trip unit’s
standard test and monitoring functions are also presented.
These instructions are grouped into three parts: Part One -
Operating the SB Breaker, Part Two - Manipulating the
Moveable Drawout Element, and Part Three - Monitoring the
Electronic Trip Unit. Before bringing the SB breaker on-line,
the user should be familiar with the test and monitoring
functions presented in Part Three. Operating instructions for
the accessories are presented in the Accessories Section.
Part One - Operating the SB Encased Systems Breaker
Operating the SB Breaker
The SB breaker controls and charging handle for the stored
energy mechanism are located in the central escutcheon of
the front panel. Standard controls are Push To Close and
Push To Open push button switches . Color-coded indicators
display the charged/discharged status of the stored energy
mechanism and the closed/open status of the breaker.
Positions are available in the central escutcheon for a key
interlock and an Electric Close pushbutton.
SB Encased Systems Breaker controls and indicators
Courtesy of NationalSwitchgear.com
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