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8159318 Electromagnet assembly directly driving latch of an electronic circuit breaker  
A circuit breaker includes a trip unit and an electronic fault detection unit sharing a common trip latch for causing the circuit breaker to trip upon detection of a fault by either unit. The...
8134428 Circuit breaker with electronic sensing and de-latch activation  
A circuit breaker and method includes a mechanical pole moveable between a latched position and an unlatched position to open an electrical connection between a pair of electrical contacts. An...
8004376 Electrical switching apparatus and shunt separator therefor  
A shunt separator is provided for an electrical switching apparatus including a housing, separable contacts enclosed within the housing, an operating assembly including a trip bar, and a trip...
7920037 Fault interrupter and load break switch  
A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the...
7911303 Circuit breaker and opening and closing method thereof  
A circuit breaker includes a vacuum valve, an electromagnet including a first coil for driving an operating shaft of the vacuum valve toward an opening direction by electromagnetic repulsion, a...
7663457 Magnetic latch for a voice coil actuator  
Magnetically latching and releasing a voice coil actuator for controlling electrical switchgear. The voice coil actuator includes a voice coil magnet disposed on a common longitudinal axis with...
7440689 Electromagnetically actuated adjusting apparatus for lens  
An electromagnetically actuated adjusting apparatus for lens is disclosed. The adjusting apparatus comprises a body capable of furnishing a lens inside, at least one permanent magnet, a first...
7391289 Systems, methods, and device for actuating a circuit breaker  
Certain exemplary embodiments comprise a device comprising: a trip mechanism adapted to engage an operating mechanism of an alternating current circuit breaker, said trip mechanism comprising: a...
7352265 Manual trip control method and arrangement for multiple circuit interrupters  
A manual trip control method and arrangement is provided to manually trip a plurality of circuit interrupters. Specifically, where the circuit interrupters include magnetic-actuator-driven vacuum...
7170375 Permanent-magnet ground fault circuit interrupter plug and its permanent-magnet mechanism therein  
A permanent-magnet ground fault circuit interrupter plug with self-diagnosing function having an enclosure and a permanent-magnet mechanism encased in the enclosure. In one embodiment, the...
6980069 Magnetic device for a magnetic trip unit  
A method and magnetic trip unit for actuating a latching mechanism to trip a circuit breaker upon an overcurrent condition, the magnetic trip unit including: a first electrically conductive strap...
6870115 Circuit breaker including extension spring(s) between operating mechanism pivot and operating handle  
A circuit breaker includes a case having an opening, separable contacts housed within the case, and an operating mechanism for opening and closing the separable contacts. The operating mechanism...
6864451 Circuit breaker including operating handle having one or more operating arms and extension springs  
A circuit breaker includes a case having an opening, and separable contacts having a closed position and an open position housed within the case. An operating mechanism for opening and closing the...
6816045 Adjustable circuit breaker mechanism  
A circuit breaker mechanism comprises a coil which surrounds a tube in which a magnetic core can move against the urging of a spring. An armature is located adjacent the coil and moves transversely...
6807432 Wireless transmission network card  
A wireless transmission network card frame kit assembly consists of: a lower frame for housing electric circuits or other necessary elements including a first section which is wedged in a computer...
6774749 Trip cross bar and trip armature assembly for a circuit breaker  
A circuit breaker for interrupting the flow of current upon the detection of excess current or temperature is provided which comprises a housing, a trip armature plate, a trip armature frame, and a...
6747534 Circuit breaker with dial indicator for magnetic trip level adjustment  
This concerns a molded case circuit breaker having separable main contacts and an operating mechanism utilized to cause the separable main contacts to open and close. A trip unit is provided to...
6744339 Motor protection trip unit  
A motor protection trip unit for a circuit breaker includes an electrically conductive strap, a yoke including a body including a first side wall, a second side wall, a third side wall, and a...
6633211 Circuit interrupter with a magnetically-induced automatic trip assembly having improved armature pivoting  
A circuit interrupter including a housing, separable main contacts disposed in the housing, and an operating mechanism disposed in the housing and interconnected with the contacts. A trip mechanism...
6556111 Selective release unit for circuit breaker  
A release unit for a circuit breaker is equipped with a magnet yoke and an armature collaborating with it for actuating a release device, in which case a nonmagnetic weight element that increases...
6486759 Circuit breaker calibration screw  
A molded case circuit breaker that includes a double headed calibration screw. The calibration screw has a first and second end with identical convex tip surfaces and screw driver engagement...
6420948 Parallel contact circuit breaker  
A parallel pole magnetohydraulic circuit breaker (10), having a single trip element (271) and a pair of trip mechanisms (101, 102), achieving an increased current carrying capacity with reduced...
6366187 Support and alignment structure for magnetic trip device  
A plunger assembly support structure for a molded case circuit breaker magnetic trip mechanism for aligning a trip mechanism plunger assembly. The plunger assembly support structure includes a base...
6307453 Circuit breaker with instantaneous trip provided by main conductor routed through magnetic circuit of electronic trip motor  
The toggle mechanism of a circuit breaker is connected at one end to the pivoted contact arm and at the other end to a pivoted latch lever which is engaged to latch the toggle mechanism by a latch...
6307455 Control mechanism for a circuit breaker  
Circuit breaker mechanism comprising a manually controlled part 40a acted upon by a knob 42 and a part 40c with an electromagnetic overcurrent tripping device 41 and a trip spring 65.The parts 40b,...
6061217 Electrical switching apparatus employing twice-energized trip actuator  
A circuit breaker includes separable contacts for movement between a closed position and an open position to switch electrical current. An operating mechanism moves the separable contacts between...
5910758 Miniature circuit breaker with shunt trip device  
A circuit breaker system with a shunt trip device is taught in which the shunt trip device occupies a miniature circuit breaker case and utilizes features of the miniature circuit breaker case...
5886603 Electrically controlled tripping mechanism  
A detent mechanism comprising a support member having a fixed seating member comprising opposite sides; a first spring for exerting a first spring force, disposed between one side of the fixed...
5886600 Modular thermal magnetic trip unit for rapid circuit interruption  
A modular thermal magnetic trip unit includes the bimetal, magnet, armature and latch in a one-piece assembly. A latch opening is formed in a bottom part of the magnet on a side opposite the...
5740003 Circuit breaker shunt trip accessory with mechanical override  
A circuit breaker shunt trip accessory unit contains a solenoid driven plunger that interacts with the circuit breaker operating mechanism to interrupt circuit current by means of an external...
5394126 Circuit breaker with improved magnetic trip assembly  
A circuit breaker with improved magnetic trip assembly includes electrical contacts operable between a closed position in which a circuit is completed and an open position in which the circuit is...
4973928 Extender spring for increased magnetic trip settings  
A molded case circuit breaker is provided with a magnetic trip device which allow for a relatively wide range of adjustment. The magnetic trip device allows the magnetic air gap to be varied as...
4951015 Circuit breaker with moving magnetic core for low current magnetic trip  
A circuit breaker is disclosed having a movable magnetic core provided in the magnetic trip assembly thereof adapted to lower the current levels at which the magnetic trip mechanism will operate....
4929919 Twin unit circuit breaker with improved magnet structure  
A twin unit circuit breaker has a V-shaped stainless steel combination armature pivot and bias spring, a central offset portion on the armature to increase the armature surface area that is...
4914409 Electric circuit breaker  
A mounting frame is provided for components of a circuit breaker. The frame is of metal and is designed so that it carries current and is not merely for supporting the components. The frame has a...
4804932 Mercury wetted contact switch  
A glass reed relay has an elongated glass enclosure with an electrode passing through and being sealed to each of the opposite ends of said enclosure. One of the electrodes has an associated reed...
4771254 Circuit breaker magnetic trip unit  
A magnetic trip unit for molded case circuit breakers includes a pair of U-shaped magnets opposedly arranged around a part of the circuit breaker load strap and the armature strap. Circuit current...
4731692 Circuit breaker trip solenoid assembly  
An electronic circuit breaker having a trip solenoid assembly. The trip solenoid assembly includes a permanent magnet, plunger, trip coil and assist coil and is positioned adjacent to a phase...
4725800 Circuit breaker with magnetic shunt hold back circuit  
A circuit breaker structure having a faster trip unit characterized by a circuit breaker operator and a trip unit comprising a coil, a core, and an armature, and a hold-back bracket extending from...
4719438 Circuit breaker with fast trip unit  
A circuit breaker structure having a faster trip unit characterized by a circuit breaker operator and a trip unit comprising a coil, a core, and an armature, a flux concentrating plate spaced from...
4706054 Thermal magnetic trip unit for molded case circuit breakers  
A magnet piece and armature are arranged around a circuit breaker load strap having a bimetal strip attached thereto. The magnet piece is formed in a U-shaped configuration and is attached to the...
4679019 Trip actuator for molded case circuit breakers  
An electronically driven trip actuator for multipole industrial rated molded case circuit breakers is installed within a common housing with the circuit breaker operating mechanism. The trip...
4679016 Interchangeable mechanism for molded case circuit breaker  
An interchangeable operating mechanism assembly for molded case circuit breakers having a detachable movable contact arm and trip unit assembly allows the same mechanism assembly to be employed...
4523164 Circuit breaker  
A circuit breaker capable of breaking an associated circuit when an overcurrent higher than a rated current keeps flowing through the breaker or upon a short-circuit current. Electric power path in...
4323868 Setting mechanism for snap action circuit breaker  
A circuit breaker comprising an electrically insulating housing, an overcurrent sensor in the housing, a stationary and a movable contact in the housing, and a latch mechanism coupled to the...
4319210 Current limiting switch capable of rapid circuit breaking  
Current limiting switch for rapid circuit breaking, including at least one pair of contacts, one contact being mounted stationary and the other being mounted on a movable arm. The contact arm is...
4281303 Individual circuit breaker pole trip mechanism  
The common trip mechanism of a multi-pole circuit breaker is supplemented by individual breaker pole trip mechanisms operating independently of each other in response to fault current flowing in...
4260969 Low voltage circuit breaker with an electromagnetic tripping device  
A low voltage circuit breaker has an insulating housing which is split along a parting line into an upper part and a lower part. Disposed in the housing is an electromagnetic tripping device which...
4220935 Current limiting circuit breaker with high speed magnetic trip device  
A molded case current limiting circuit breaker includes separable contacts, an operating mechanism releasable to effect automatic separation of the contacts, and a high speed electromagnetic trip...
4197519 Circuit breaker having cam surfaces on the trip member  
A high performance, manually and automatically operable, trip-free magnetic circuit breaker incorporates a collapsible linkage having selected elements of precision molded plastic cooperating in a...
Matches 1 - 50 out of 92 1 2 >