Electromagnetic structure for a circuit breaker
AssigneeSiemens Energy & Automation, Inc.
InventorsBernard DiMarco, Charles W. Stanford
Life of this patent
Estimating the term…
Abstract
A circuit breaker has a bimetallic element and an electromagnetic element. The bimetallic element has one end connected to the line terminal and the other end connected to the pigtail connector. A shunt is connected at one end to the pigtail connector and has a contact on the other end matable with the line terminal contact. The shunt is connected at one end to the pigtail connector immobilizing the pigtail so that it does not interfere with the operation of the bimetallic element. The electromagnet is positioned about the bimetallic element and has an armature which is movable to trip the circuit breaker. The shunt element has a spring connected which biases the armature away from the electromagnet.
Claims12
A circuit breaker, comprising:
- a line terminal having a contact;
- a pigtail connector;
- a bimetallic element having one end connected to the line terminal and the other end connected to the pigtail connector;
- a shunt connected at one end to the pigtail connector and having a contact on the other end matable with said line terminal contact;
- and
- an electromagnetic positioned about the bimetallic strip having an armature movable to trip the circuit breaker in response to the current flow through the circuit breaker of a preselected magnitude, said armature moving said shunt and closing the shunt contact prior to tripping said breaker.
A circuit breaker, comprising:
- a line terminal having a contact;
- a pigtail connector;
- a bimetallic element having one end connected to the line terminal and the other end connected to the pigtail connector;
- a shunt connected at one end to the pigtail connector and having a contact on the other end matable with said line terminal contact;
- and
- an electromagnet having a general U configuration and having the bimetallic strip and shunt passing through the legs of the U, said electromagnet having an armature movable to trip the circuit breaker in response to the current flow through the circuit breaker of a preselected magnitude, said armature moving said shunt and closing the shunt contact prior to tripping said breaker.
Dependencies are inferred from the claim text.