Accessories - GE AKR-30S Manual

Shunt Trip
The shunt trip offers remote electrical tripping of breaker. It is
usually controlled by a switch or pushbutton and may also be
used in conjunction with protective relays for automatic
tripping.
The shunt trip coil is rated for intermittent duty. When
factory installed it is supplied with a cutoff switch which
automatically removes control power following a breaker trip.
Undervoltage Trip
The undervoltage trip protects against harmful drops in line
voltage by automatically tripping the breaker. This device is
set to pick up at approximately 85% of bus voltage, and drop
out between 30% and 60%.
The UV device is also available with an optional static
time-delay unit. This offers a field-adjustable two to six
second delay between undervoltage fault and breaker trip to
prevent potential nuisance tripping due to momentary loss of
voltage.
The time delay unit is mounted external to the breaker. It is
rated 1 25 or 250V de or 208/240V ac, 50 or 60 Hz. For any
other ac sou rce voltage, a control power transformer with a
240 Volt secondary rated at least 1 00 Va is required.

Accessories

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