Back to results
US 8,614,618 B2Granted
Fusible switching disconnect modules and devices with multi-functional trip mechanism
AssigneeCooper Technologies Company
InventorsMatthew Rain Darr, Hundi Panduranga Kamath
Life of this patent
Estimating the term…
Abstract
A fusible switch disconnect device includes a housing adapted to receive at least one fuse therein, and a switchable contact for connecting the fuse to circuitry. A tripping mechanism and control circuitry are provided to displace the switchable contact, as well as multiple other components in the device, in response to a predetermined electrical condition.
Claims43
A fusible switch disconnect device comprising:
- a disconnect housing adapted to receive and engage at least a portion of a removable electrical fuse, the fuse including first and second terminal elements and a fusible element electrically connected therebetween, the fusible element defining a circuit path and being configured to permanently open the circuit path in response to predetermined electrical current conditions experienced in the circuit path;
- line side and load side terminals in the disconnect housing and electrically connecting to the respective first and second terminal elements of the fuse when the fuse is received and engaged with the disconnect housing;
- at least one switchable contact in the disconnect housing, the at least one switchable contact provided between one of the line side terminal and load side terminal and a corresponding one of the first and second terminal elements of the fuse, the at least one switchable contact selectively positionable in an open position and a closed position to respectively connect or disconnect an electrical connection between the line side terminal and the load side terminal and through the circuit path of the fusible element;
- a switch actuator manually operable by a user to selectively position the at least one switchable contact;
- and
- a mechanism operable to automatically displace the switch actuator and cause the at least one switchable contact to move to the open position when predetermined electrical conditions occur;
- wherein the mechanism includes an actuator arm and the device further comprises a sliding bar carrying the at least one switchable contact, and a terminal interlock element;
- wherein displacement of the actuator arm simultaneously displaces the switch actuator and at least one of the sliding bar carrying the at least one switchable contact and the terminal interlock element.
5 more elements
A fusible switch disconnect device comprising:
- a disconnect housing adapted to receive and engage at least a portion of a removable electrical fuse, the fuse including first and second terminal elements and a fusible element electrically connected therebetween, the fusible element defining a circuit path and being configured to permanently open the circuit path in response to predetermined electrical current conditions experienced in the circuit path;
- line side and load side terminals in the disconnect housing and electrically connecting to the respective first and second terminal elements of the fuse when the fuse is received and engaged with the disconnect housing;
- at least one switchable contact in the disconnect housing, the at least one switchable contact provided between one of the line side terminal and load side terminal and a corresponding one of the first and second terminal elements of the fuse, the at least one switchable contact selectively positionable in an open position and a closed position to respectively connect or disconnect an electrical connection between the line side terminal and the load side terminal and through the circuit path of the fusible element;
- a switch actuator manually operable by a user to selectively position the at least one switchable contact;
- and
- a mechanism operable to automatically displace the switch actuator and cause the at least one switchable contact to move to the open position when predetermined electrical conditions occur;
- wherein the mechanism includes an electromagnetic coil, a cylinder extendable and retractable along an axis of the coil, and a rotatable arm positioned proximate the electromagnetic coil and being displaced when the cylinder is extended and retracted and
- wherein the switch actuator is rotatably mounted, the device further comprising mechanical linkage interconnecting the rotatable arm and the switch actuator, wherein the switch actuator and the rotatable arm may be simultaneously rotated by extension and retraction of the cylinder from the coil.
5 more elements
A fusible switch disconnect device comprising:
- a disconnect housing adapted to receive and engage at least a portion of a removable electrical fuse, the fuse including first and second terminal elements and a fusible element electrically connected therebetween, the fusible element defining a circuit path and being configured to permanently open the circuit path in response to predetermined electrical current conditions experienced in the circuit path;
- line side and load side terminals in the disconnect housing and electrically connecting to the respective first and second terminal elements of the fuse when the fuse is received and engaged with the disconnect housing;
- at least one switchable contact in the disconnect housing, the at least one switchable contact provided between one of the line side terminal and load side terminal and a corresponding one of the first and second terminal elements of the fuse, the at least one switchable contact selectively positionable in an open position and a closed position to respectively connect or disconnect an electrical connection between the line side terminal and the load side terminal and through the circuit path of the fusible element;
- a switch actuator manually operable by a user to selectively position the at least one switchable contact;
- a trip mechanism contained in the housing and operable to automatically displace the switch actuator and cause the at least one switchable contact to move to the open position when predetermined electrical overcurrent conditions occur while the switch contact is in the closed position;
- and
- a sliding bar mechanically linked with the switch actuator, wherein rotation of the switch actuator causes linear displacement of the sliding bar, and wherein the at least one switchable contact is carried on the sliding bar.
4 more elements
Dependencies are inferred from the claim text.