Download Siemens TPS3 15 Specifications

Transcript
Siemens main breakers are bus connected to the main bus
bars. This means there are no cable connections required from
the main circuit breaker to the lugs on the main bus bars. Bus
connecting provides a higher degree of circuit integrity because
there is less chance for loose connections which lead to
overheating.
Bus Connected
Depending on the panelboard, the main breaker can either be
mounted horizontally or vertically.
To Branch Circuits
Supply
Supply
Main
Breaker
Main
Breaker
Branch
Breaker
Branch
Breaker
Main Breaker Mounted Horizontally
Main Lug Only Panelboard
Main Breaker Mounted Vertically
A main lug only type panelboard does not have a main circuit
breaker. The incoming supply cables are connected directly to
the bus bars. Primary overload protection for the panelboard is
not provided as an integral part of the panelboard.
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