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a p p eN D I x b - C I r C u I T b r e a k er r e j eC T I o N fe aT u r e s
Appendix B - circuit breaker
rejection features
General
In general, draw-out breakers of the same type
and rating are interchangeable in their equipment
compartments; draw-out breakers of different
types or short circuit ratings are intentionally made
non-interchangeable. To prevent inserting the
wrong breaker into a draw-out compartment,
unique “rejection hardware” is affixed to each
breaker and its cassette. The rejection is
accomplished by pins on the sides of the breaker
and the blocks on the sides of the cassette.
Rejection feature
This factory-installed, pin and gate device
prevents the insertion of a circuit breaker into
a cassette if the nominal rating of the breaker
is incompatible with that of the cassette and
its ancillary equipment.
The information in the following appendices
lists the available rejection scheme combinations
for the rejection feature. AKD-20 rejection
combinations are in Appendix C and Entellisys
rejection combinations are in Appendix D.
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Fig. А.1
Circuit breaker
pin assembly
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Fig. А.1
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Fig. А.2
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Fig. А.2
Cassette block assembly
