Siemens UL489 Quick Start Manual page 5

into the test position and then the connected position. If the circuit breaker cannot be racked in,
make sure that the secondary terminals are aligned properly and that the shutters are opening
correctly (if supplied).
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Charge the storage spring
If the circuit breaker has been supplied with an electrical motor-operated mechanism it starts
automatically once the breaker is racked in to the test position (if control voltage has been
connected and is turned on). The motor is automatically switched off at the end of the charging
operation. The motor will re-engage immediately following spring discharge as long as the
breaker is in the test or connected position. For fixed-mounted circuit breakers, the motor will
always be operable as long as control power is connected and turned on.
Insert the racking handle back into the circuit breaker by
pushing the racking handle release button (2) to the left
and stowing the handle back into the slot horizontally.
CAUTION: Do not turn the crank handle beyond the stop
or the racking mechanism will be damaged.
If the circuit breaker has not been supplied with an electrical
motor-operated mechanism, the breaker can be charged
manually. For charging the spring mechanism completely,
grab the charging handle and steadily execute each stroke as
far as it will go. The first 8 strokes are fairly easy, the 9
takes considerably more force to complete the stroke. The
speed of the stroke is not important, the 9
made slow and methodically to avoid damaging the spring
mechanism. Once the mechanism is fully charged, further
strokes will feel like idle operations (no resistance). Make sure
that the charging handle stows completely back into the slot.
th
stroke
th
stroke should be
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