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WO/1999/009573A1 |
A protective switchgear (1), in particular a fault-current protective switchgear, has a sensor circuit (2) for driving a first circuit-breaker (10) for a switch lock mechanism (12) which is coupled to a switching shaft (25) in order to a...
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WO/1998/053473A1 |
A kinematic system for actuating the movable contact of automatic electric breakers includes an actuation mechanism (5) which includes an external handle (9) which is pivoted to the body (3) of a breaker and is connected to the cross-mem...
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WO/1998/042001A1 |
A low-cost earth leakage circuit breaker which comprises a less number of parts and can be assembled easily. The earth leakage circuit breaker is highly reliable, has the same external size as those of the same class of wiring circuit br...
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WO/1998/035372A1 |
A lockout solenoid is connected with the circuit breaker accessory shunt trip in a high ampere rated circuit breaker and interacts with the circuit breaker accessory lever to prevent the closing of the circuit breaker contacts until the ...
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WO/1998/034260A1 |
The invention relates to a switching device with under-voltage auxiliary switch, characterized in that it enables combining low activating force with a simple structural design. This is achieved by close coupling between the activating e...
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WO/1998/033255A1 |
A protecting device has a disconnecting contact (13) connected to the load current line (2) and actuated by an electromagnetic system (9). A shunt circuit leads from the side of the disconnecting contact (13) opposite to the battery to a...
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WO/1998/032144A1 |
The load disconnecting switch is connected with a contact installation (14, 15, 36) between a pole terminal (4) and a main circuit (8). By means of a manually operated switch arm (45), the contact installation can be locked in the closed...
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WO/1998/027564A1 |
Each pole of a multi-pole circuit breaker is equipped to individually separate the circuit breaker contacts within each pole upon overcurrent occurrence. A digital processor within the circuit breaker trip unit determines the occurrence ...
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WO/1998/002896A1 |
A modular automatic electric breaker with optimization of used spaces, which comprises a flat box-like body (1) which has, on its rear face, couplers (2) for coupling to an omega-shaped guide and, on its front face, a central protrusion ...
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WO/1997/043779A1 |
A process is disclosed for adjusting thermal overload cut-outs. After bimetal strips (1) are synchronised and a release mechanism (3) is possibly pre-adjusted, a current is applied for a certain time to the bimetal strips (1), and the ac...
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WO/1997/038432A1 |
The present invention provides an accessory module for monitoring and controlling the status of a circuit breaker. The accessory module attaches to the side of a circuit breaker and has a mechanism similar to the mechanism in a circuit b...
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WO/1997/038431A1 |
The present invention provides an accessory module for monitoring and controlling the status of a circuit breaker. The accessory module attaches to the side of a circuit breaker and has a mechanism similar to the mechanism in a circuit b...
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WO/1997/023887A2 |
In a thermal triggering system (1) with bimetal strips (2), a slide (3), a switching component (5) to trigger a switching process and a differential lever (4) which is secured to the slide (3) and, when the latter is moved in the pushing...
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WO/1997/008725A1 |
Described is a power circuit-breaker (1) including current transformers (13) and an electronic tripping device (2) with a housing (5), the circuit-breaker also including a data store (14) for characteristic values of current-transformer ...
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WO/1996/033505A1 |
The invention concerns a current transformer (1) which comprises essentially a torus (2) with a magnetic core, primary windings formed by the active conductors of an electrical installation to be protected, and a secondary winding (3) at...
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WO/1996/028872A1 |
An electrical differential protection apparatus, particularly a circuit breaker or switch having a test circuit, is disclosed. The apparatus (A) comprises a release (1) with a differential current sensing transformer (12), a relay (16) f...
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WO/1996/020525A1 |
The electrical circuit breaker has a main line (terminals 41, 42) to be protected, a test circuit (terminals 43, 44), a test key (2) and an electrical signalling device (49). The electrical signalling device (49) is situated in the housi...
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WO/1996/016424A1 |
A fuse arrangement in a distribution fuse-board (10) including a fitting (20, 30) which is connected to the fuse-board and which accommodates a fuse holder (70) for connecting a fuse (100) in the fuse holder to a phase-conductor in the f...
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WO/1996/015460A1 |
A device for detecting low magnitude electrical currents comprises a generally toroidally-shaped member (10) of a magnetic material provided with an air gap (14) and a magneto-resistive device in the form of a bridge (16) disposed in the...
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WO/1996/009639A1 |
A differential current protective switch, a DI switch, which operates with a cumulative current transformer and a triggering device in a secondary circuit on the secondary winding of the cumulative current transformer, the conductors to ...
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WO/1996/003760A1 |
A current imbalance sensor comprising a toroidal core and output winding assembly (11) and a first electrical conductor (16) in the form of a tubular element of non-magnetic material extending co-axially through the toroidal assembly (11...
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WO/1996/003759A1 |
A module for use with the circuit breaker, the module being arranged to be mounted on an end of the circuit breaker and to monitor and/or control the circuit breaker and/or an electrical circuit control thereby in use. The module can be ...
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WO/1996/001488A1 |
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 seating member and a first sliding member, f...
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WO/1996/001487A1 |
The invention provides a controllable detent or latch and release mechanism the stiffness of which can be altered by the application of for instance an electric field. The stiffness of the device overall is a combination of a mechanical ...
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WO/1996/001484A1 |
An electrical switching device arranged to display the status of said device on a flag significantly larger than the relative movements of any components of said device. In an envisaged embodiment of the invention, this is achieved by ar...
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WO/1996/001489A1 |
This invention relates to a push button residual current device wherein a single pusch button is used to perform setting and testing operations on the device. More specifically, over the first part of the down stroke of the push button a...
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WO/1995/032536A1 |
An integrated circuit breaker (16) is described having undervoltage trip capability along with automatic overcurrent protection. The undervoltage accessory (32) further provides auxiliary power to the trip unit (10) and allows the trip u...
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WO/1995/030234A1 |
A ground fault module is provided for protecting a circuit interrupter connected between the load and line terminals of a phase and neutral power line. The module includes a sensor for detecting a current imbalance between the phase and ...
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WO/1995/027301A1 |
A conducting spring (102) for exerting a biasing force against a test button (22) to open a circuit interrupter test circuit (84). The spring (102) includes a one-piece, elongated cantilever (104) having a first (106) and second (110) en...
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WO/1995/019630A1 |
A compact coil assembly (10) is provided for protecting electrical components from transient voltage surges. The assembly (10) includes a bobbin (12) having a cylindrical core (14) with two ends. A first and second flange (20, 22) are ea...
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WO/1995/012893A1 |
An overvoltage protection device (2) has a plurality of varistors (51) fitted in a housing, whose earth electrodes are electrically interconnected via a strip (58). The mains electrodes (53) of the varistors are connected to contacts (34...
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WO/1995/008832A1 |
A power switch has a pole unit (1) with a switch contact arrangement (3), an arc quenching device (4) and a flow channel (19). Switching gases from the arc quenching device (4) are taken into the flow channel (19) and, after cooling, tak...
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WO/1995/008179A1 |
A switching accessory is provided for use with motor starters. In a first embodiment the accessory may be utilized as a motor starter by-pass. In another embodiment the accessory may be utilized as a motor starter isolator. The switching...
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WO/1994/024689A1 |
The invention relates to an electromagnetic switching mechanism, especially for mobile electrical safety switches with manual, electromagnetic and free triggering of the breaking of the contact. It makes it possible to construct such a s...
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WO/1994/022158A1 |
A safety switch has an LS (line protection) and an FI (fault current protection) section. The switch lock of the LS section has a catch support lockable by a catch which, for tripping (in the event of an overcurrent), works with a bimeta...
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WO/1994/014178A1 |
A computer (11) having a hard disk drive includes a battery voltage monitor (U1) which establishes a shut down condition of the computer (11) if the supply voltage falls below a chosen level VL. Upon start up of the hard disk drive motor...
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WO/1994/008348A1 |
Described is a latch-locked vacuum-type circuit breaker (1) with two independently actuated magnets (12, 15). While the first magnet (12) is mounted, together with a locking lever (13), inside the drive-unit housing (2), the second magne...
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WO/1994/000862A1 |
A trip energy monitor for microprocessor-based trip units includes a Zener diode (CR1), a current-limiting resistor (R1), and an inverting buffer (INV1). The trip energy monitor provides a reference logic signal which is read by a microp...
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WO/1993/022785A1 |
An improved miniature circuit breaker (1, 2) is adapted to improved automatic assembly of all components thereof. Key components of the breaker are individually and collectively designed to be susceptible to total Z-axis assembly. In par...
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WO/1993/022784A1 |
A miniature circuit breaker is provided which is adapted to improve automatic assembly of all components. Key components of the breaker are individually and collectively designed to be susceptible to total Z-axis assembly. In particular,...
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WO/1993/022786A1 |
An improved miniature circuit breaker (10) is provided which is adapted to improved automatic assembly of all components thereof. Key components of the breaker are individually and collectively designed to be susceptible to total Z-axis ...
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WO/1993/016479A1 |
Disclosed is a helically wound core of ferrous material (14) used as a differential current sensor core in the ground fault sensor of a ground fault interrupter circuit. The ferrous material comprises a single strand of wire which is wou...
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WO/1992/017044A1 |
There is provided an enclosure that encapsulates a current transformer (1) by utilizing snap together members (12, 14) while allowing for electrical coupling between the transformer and external wiring. Two housing members (9, 11) will s...
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WO/1992/015110A1 |
In order to be able to fit a protective switchgear designed to be tripped by differential current or undervoltage, or designed as a free-trip device, in a restricted space, e.g. inside an ordinary right-angle mains plug, the invention ca...
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WO/1992/006484A1 |
An accessory module (104) for use with a circuit breaker (10) is configured for mounting to the breaker, and has rotor system (142) which follows the movement of the circuit breaker blade (24) in the breaker by means of a coupling member...
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WO/1992/005569A1 |
A residual current circuit breaker (1) has a partition wall (3) which separates an over-current protection device (4) from a residual current detection circuit (5). A plunger rod (24) extends through a bore (23) in the armature (21) of a...
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WO/1992/002065A1 |
A plug-in ground fault interrupting type circuit breaker includes a resilient jaw (42) for engaging the neutral bar in a loadcenter. The jaw is formed at the end of a conductive strap (70) which passes through the window of a transformer...
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WO/1991/013454A1 |
A residuel current circuit breaker (1) has a partition wall (3) which separates an over-current protection device (4) from a residual current detection circuit (5). A plunger rod (24) extends through a bore (23) in the armature (21) of a...
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WO/1991/005358A1 |
A circuit breaker control system (24) includes a motor driven fork assembly (36), activated from a remote location, for simultaneously opening all of the breaker load contacts (54) and locking them in an open position. A DC voltage is se...
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WO/1990/000807A1 |
An electromagnetic actuator (1) of the type of a relay, having an armature (2) polarized by a permanent magnet (5) and a movable drive element (6) attracted by the armature (2) against a spring means (8), incorporates an electric current...
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