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Operating Instructions

Operating the SB Encased Systems Breaker

Manually Charging the Stored Energy Mechanism

The stored energy mechanism may be charged with the SB

breaker open or closed. If the stored energy mechanism is

charged with the breaker open, sufﬁcient energy is stored to

close and then open the breaker without recharging. If the

stored energy mechanism is charged with the breaker closed,

the operating sequence of open-close-open may be executed

without recharging. To manually charge the stored energy

mechanism, pull the charging handle.

Five or six full strokes, or several partial strokes are required to

fully charge the stored energy mechanism. When the stored

energy mechanism is fully charged, Spring Charged/Spring

Discharged indicator points to Spring Charged. The charging

handle returns to the stowed position when released. While

manually charging the breaker with the charging handle,

not

depress the Push-to-Close or Push-to-Open push buttons.

If an optional electric motor operator is employed, the electric

operator automatically recharges the stored energy mecha-

nism when the breaker is closed. If the electric operator is dis-

abled, the stored energy mechanism may be charged

manually.

CAUTION

Do not exert further downward pressure

when springs are charged or handle is

against bottom stop as shown in the

illustration below. Potential damage to

housing may occur.

To manually charge the stored energy mechanism, pull the charging handle downward ﬁve or six strokes until indicator points to

“Spring Charged.”

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Siemens TL.. Bedienerhandbuch Seite 18