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(11) | EP 2 544 209 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Design for a current transformer with an integrated magnetic actuator |
| (57) A system comprising a magnetic actuator, a current transformer and operational electronics
in a dual-coil circuit breaker. The system includes an inline, but non concentric,
implementation of the primary and secondary coils to maintain a narrow width suitable
for retrofitting in standard industrial rack mounted enclosures. The system further
comprises a split core design that is integrated into an upper and lower plate which
slide together and are retained by a secondary coil bobbin. Typically, the two parts
of the split core can be manufactured into net shapes by utilizing a powder metal
or metal injection molding process. Moreover, the split core design disclosed herein
can reduce costs and time associated with manufacturing and assembly of the current
transformer.
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