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US 4,636,760 AGranted
Low voltage circuit breaker with remote switching function
AssigneeWestinghouse Electric Corp.
InventorAnthony Lee
Life of this patent
Estimating the term…
Abstract
A low voltage circuit breaker with remote switching function characterized by an insulating housing containing manually actuator for opening and closing separable contacts and a remotely controlled solenoid for opening the contacts, and the solenoid means being spring biased in the closed contact position only when the manually actuator is in the closed contact position.
Claims7
A circuit breaker for use in remote load energy management systems, comprising:
- an insulating housing having line and load terminals;
- separable contact means including a stationary contact and a movable contact member disposed in the housing to form a circuit breaker path between the terminals;
- manual actuating means within the housing for operating the circuit breaker and including an operating lever for opening and closing the contacts;
- electromagnetic means including a plunger for opening the movable contact and energizable by an electric current from a source remote from the circuit breaker;
- the electromagnetic means including connector means between the electromagnetic means and the movable contact;
- the electromagnetic means including recoil means for retracting the plunger upon deenergization of the electromagnetic means;
- the operating lever being positioned to prevent closing of the contacts upon deenergization when the manual actuating means is in an open-contact position;
- the movable contact comprising a first lever pivotally mounted for movement between open and closed positions of the stationary contact;
- and
- the connector means including a second lever connected between the plunger and the first lever.
7 more elements
A circuit breaker for use in energy management systems, comprising:
- (a) an insulating housing having line and load terminals;
- (b) separable contact means including a stationary contact and a movable contact disposed in the housing to form a circuit breaker path between the terminals;
- (c) manual actuating means within the housing for operating the circuit breaker and including an operating lever for opening and closing the contacts;
- (d) arc quenching means adjacent to the circuit breaker path in the housing;
- (e) the stationary contact including an arc guide rail forming part of the arc quenching means;
- (f) another guide rail forming another part of the arc quenching means;
- (g) the movable contact being movably connected to the other guide rail;
- (h) electromagnetic means including a plunger for moving the movable contact to the open position in response to an electric pulse from a source remote from the circuit breaker;
- (i) means for retracting the plunger upon deenergization of the electromagnetic means;
- and
- (j) the operating lever being positioned to prevent closing of the contacts upon deenergization when the manual actuating means is in the open-contact position.
8 more elements
Dependencies are inferred from the claim text.