Circuit BreakerFree Patent Search

  • Electrode for vacuum circuit breaker

    Circuit Breaker Abstract An electrode for a vacuum circuit breaker provided with a connecting portion made of a material having the same resistivity as the arc running face portions across the corresponding arc guiding channel at the outer circumfere...

  • Ceramic resistor, production method thereof, neutral grounding resistor and circuit breaker

    Circuit Breaker Abstract A ceramic resistor includes zinc oxide as a main component, and as essential components, aluminum oxide 3.0-40 mol %, magnesium oxide 2.0-40 mol %, silicon oxide 0.1-10 mol %, and at least one kind of compound 0.005-0.5 mol %...

  • Pressurized gas circuit-breaker

    Circuit Breaker Abstract In a pressurized gas circuit-breaker the mobile contact member is fixed to a connecting rod that passes coaxially through the fixed braking cylinder. The braking cylinder has transverse walls at both ends so as to delimit a c...

  • Circuit breaker mounting bracket

    Circuit Breaker Abstract A circuit breaker mounting bracket is comprised of a generally upright support member, a base member extending generally perpendicularly from a bottom of the support member, a flange depending from a distal end of the base me...

  • Circuit breaker magnetic blowout arc extinguishing device with arc runner features

    Circuit Breaker Abstract There is provided an acr extinguishing device of a circuit breaker which closes and opens an electric line, one of two contact parts being fixed to a base part. The arc extinguishing device includes an arc runner formed of an...

  • Power circuit-breaker

    Circuit Breaker Abstract The circuit-breaker has a quenching chamber which is filled with an insulating medium, is of cylindrical design and has a quenching zone extending along a longitudinal axis. In addition, it has a fixed contact arrangement, wh...

  • Circuit breaker with terminal nut retainer

    Circuit Breaker Abstract The present invention provides a circuit breaker having a terminal nut retainer 10 for securely holding a nut 65 in a fixed position adjacent and below a circuit breaker terminal 60. The circuit breaker is placed in a circuit...

  • Pressure actuated circuit breaker with frangible printed circuit board

    Circuit Breaker Abstract A pressure actuated breaker for cutting-off current flow in and from a battery in response to a relatively low internal pressure rise within the battery. The pressure cut-off sensor includes a box having an opening and being...

  • Modular isolation block for circuit breaker contact arms

    Circuit Breaker Abstract A single-sized circuit breaker electric isolation block provides both electric insulation between the circuit breaker operating mechanism as well as mechanical support to the circuit breaker contact arm assembly over a wide r...

  • Reduced autocompression circuit-breaker

    Circuit Breaker Abstract This present invention concerns a circuit-breaker of the self-blasting type including a system for immobilizing the semi-mobile piston during a first part of displacement of the mobile contact assembly between the closed posi...

  • Circuit breaker contact arm and spring shield

    Circuit Breaker Abstract An arc isolation shield for molded case circuit breakers is inserted between the circuit breaker case and cover and attached to one leg of the operating cradle. The knee of the circuit breaker moveable contact arm contacts th...

  • Padlocking arrangement for high ampere-rated circuit breaker

    Circuit Breaker Abstract This invention relates to a high ampere-rated circuit breaker which meets the electrical code requirements of the world market. The circuit breaker electronic trip unit is contained within a recess in the circuit breaker cove...

  • Interface connection for a circuit breaker plug-in trip unit

    Circuit Breaker Abstract A circuit breaker including a sliding connection between a trip unit and associated contact arm is disclosed herein. The sliding connection facilitates assembly of the circuit breaker and also permits a reduction of size for...

  • Magnetic trip assembly and circuit breaker incorporating same

    Circuit Breaker Abstract A solenoid type magnetic trip assembly for a molded case circuit breaker includes an armature biased against an adjustable stop by a tension spring to set the initial gap for the magnetic trip, so that the spring bias remains...

  • Circuit breaker with latch preventing rebound of blow open contact arm

    Circuit Breaker Abstract The movable contact arms of a circuit breaker are latched in the blow open position to prevent rebound and possible restrike of the arc in response to the very high magnetic repulsion forces generated by a short circuit in th...

  • Floating positive circuit breaker

    Circuit Breaker Abstract A circuit breaker IC adapted for controlling an external NMOS switch coupled between a supply voltage and a load referenced to ground, with the circuit breaker being isolated from ground. With this arrangement, the voltage ac...

  • Apparatus for locking a circuit breaker

    Circuit Breaker Abstract Disclosed is apparatus well suited for positioning a pin to immobilize a circuit breaker switch. The apparatus comprises an elongated base member and an aperture-defining means, such as a wire or plate, fastened to the base m...

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  • Total 68 pages, 1156 patent(s)