Circuit BreakerFree Patent Search

  • Circuit-breaker having two interrupting chambers per pole with drive mechanism and drive rods isolati

    Circuit Breaker Abstract A circuit-breaker having two interrupting chambers per pole, the chambers being disposed in a T or V configuration at the end of a column provided at its base with a control system for operating a drive rod, each chamber cont...

  • Vacuum-type circuit breaker with connection terminals

    Circuit Breaker Abstract A vacuum contactor has one connection terminal for the upper and lower end of each vacuum interrupter. At least the upper connection terminal has a metal member that is dimensioned essentially as a function of a current to be...

  • Arrangement for gas circuit breaker with reactor and capacitor connected in series and method for set

    Circuit Breaker Abstract A small-sized arrangement for a DC circuit breaker with a reactor and a capacitor connected in series is provided which includes a DC circuit breaker, a parallel impedance means with a suitably determined inductance and a sui...

  • Circuit breaker magnetic trip unit

    Circuit breaker magnetic trip unit Circuit Breaker Abstract A magnetic flux concentrator trip unit for molded case circuit breakers in the form of a flux concentrator magnet arranged round the load strap at one end of the circuit breaker is positione...

  • Circuit breaker bell alarm reset mechanism

    Circuit Breaker Abstract A circuit breaker bell alarm reset mechanism interfaces between the circuit breaker operating shaft and the bell alarm plunger to directly contact the plunger in response to rotational logic provided by the operating shaft. R...

  • Molded case circuit breaker accessories

    Circuit Breaker Abstract Molded case circuit breaker accessories using slightly modified circuit breaker cases are described. Several of the accessories utilize a microswitch to provide remote indication of an auxiliary function. One modification of...

  • Circuit breaker

    Circuit Breaker Abstract An electro-magnetic operating device 10 for a circuit breaker includes a coil 12 defining a cavity 14. A stator frame 20 which includes a pole piece 18 is arranged about the coil 12. A tube, which is closed off at one end by...

  • Circuit breaker having double break mechanism

    Circuit Breaker Abstract A circuit breaker includes a first section and a second section with independently operating pairs of contact assemblies in each respective section. In the first section, at least one of the contact assemblies is constructed...

  • Drawout circuit breaker, position switch and reset arrangements

    Circuit Breaker Abstract A circuit breaker position switch unit is mounted to the sidewall of an industrial type draw-out circuit breaker enclosure to indicate whether or not the circuit breaker is electrically-connected within the enclosure. A time...

  • False-trip-resistant circuit breaker

    Circuit Breaker Abstract A circuit breaker includes a coil arrangement for actuating an armature to open the breaker. To prevent false tripping during high transient currents drawn by a load, the coil arrangement has first and second coils, electrica...

  • Modular trip bar assembly for multipole circuit breaker

    Circuit Breaker Abstract A modular plastic trip bar assembly joins separate single pole molded case circuit breakers into a single multipole circuit breaker. The addition of the trip cam to the trip bar assembly allows four and five pole combinations...

  • Drive for an electric high voltage circuit-breaker

    Circuit Breaker Abstract A drive for an electric high voltage circuit-breaker has a revolving crank that is driven by an energy storage mechanism, such as a spring, between an upper dead center and a bottom dead center and a backstop that prevents th...

  • Vacuum circuit breaker with improved contact assembly

    Circuit Breaker Abstract A vacuum switch having a fixed side electrode unit and a movable side electrode unit mounted in a vacuum vessel. Each electrode unit includes an arc electrode, an arc electrode supporting member for supporting the arc electro...

  • Low cost apparatus for detecting arcing faults and circuit breaker incorporating same

    Circuit Breaker Abstract A low cost analog arcing detector and a circuit breaker incorporating such a detector provide a variable response time to arcing faults based upon the amplitude of the arcing current. A filter generates pulses having an ampli...

  • Toggle spring for a circuit breaker

    Circuit Breaker Abstract A toggle spring for a circuit breaker operating mechanism which provides better performance and reliability is provided. The toggle spring includes a unique spring eye having a back hook portion extending around a spring shan...

  • Circuit breaker

    Circuit Breaker Abstract A circuit breaker (1) with a trip assembly (5) provided by an armature (7) carried on a yoke (6). The circuit breaker (1) trips in the event of a fault condition moving the yoke (6) and integrally formed flag section (8) so t...

  • Mounting arrangement for mounting a circuit breaker to a rail

    Circuit Breaker Abstract A circuit breaker (1) mountable on a channel section rail (8) with a pair of elongate flanges (9, 10) and secured in position by a mounting clip (17) mounted in an elongate groove (18). The mounting clip (17) is movable along...

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  • Total 68 pages, 1156 patent(s)