Circuit breaker magnetic trip unit
 A magnetic flux concentrator trip unit for molded case circuit breakers in the form of a flux concentrator magnet arranged round the load strap at one end of the circuit breaker is positioned in magnetic proximity to an armature. Current transport through the load strap generates attractive magnetic forces to articulate the circuit breaker operating mechanism when the current exceeds a threshold value. 
General Electric Company
H H
H01H H01H
inventional additional
Marshall B. Roger J. David John H. Wade A.
Hart Morgan Arnold Whiton Montague