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US 5,634,554 AGranted
Interface connection for a circuit breaker plug-in trip unit
AssigneeSiemens Energy & Automation, Inc.
InventorsBernard Dimarco, David A. Leone
Life of this patent
Estimating the term…
Abstract
A circuit breaker including a sliding connection between a trip unit and associated contact arm is disclosed herein. The sliding connection facilitates assembly of the circuit breaker and also permits a reduction of size for a circuit breaker of a given rating. An embodiment of the sliding connection includes a blade and jaw assembly connected between the trip unit and contact arm. Another embodiment of the sliding connection includes a blade or jaw assembly slidably connected directly to the contact arm.
Claims4
A circuit breaker comprising:
- a circuit breaker frame;
- a contact arm operating mechanism supported by the frame;
- a contact arm, adapted for carrying a current, pivotally supported by a shaft supported by a frame, the contact arm being mechanically coupled to the operating mechanism wherein the operating mechanism is configured to move the contact arm between an open position and a closed position;
- a trip unit configured to activate the operating mechanism to move the contact arm to the open position if the current flowing through the contact arm exceeds a limit;
- a first generally flat surface in electrical communication with the contact arm;
- and
- a second generally flat surface in electrical communication with the trip unit, the flat surfaces being slidably engaged to conduct electricity between the contact arm and the trip unit, the flat surfaces further being slidably disengagable while the contact arm remains pivotally supported by the shaft.
4 more elements
Dependencies are inferred from the claim text.