Magnetic device for a magnetic trip unit

A circuit breaker including:

• a first contact arm arranged between first and second electrically conductive straps;
• a latching mechanism configured to move said first contact arm out of contact with said first and second electrically conductive straps;
• and
• a magnetic trip unit for actuating said latching mechanism to trip the circuit breaker upon an overcurrent condition, the magnetic trip unit including:
• a flux return component in electromagnetic communication with said first electrically conductive strap;
• a tube disposed within said flux return component;
• a stator disposed at a first end of said tube connected to said flux return component, said stator having a stator surface at one end;
• and
• a plunger slidably extending from a second end of said tube, said plunger comprises a plunger surface at one end facing said stator surface, said plunger further includes another end adapted to operably interact with said latching mechanism, said plunger is biased in a predetermined position.