Circuit BreakerFree Patent Search

  • Circuit breaker with a circuit breaker unit and processing, calibration and communication modules

    Circuit Breaker Abstract The circuit breaker comprises a circuit breaker unit onto which there are fixed a communication module, a processing module and a calibration module. The communication module communicates with the processing module only via a...

  • Circuit breaker fastener

    Circuit Breaker Abstract A fastener for a reverse fed panelboard circuit breaker is taught. Briefly stated, a resilently deformable pivoting member is disposed between side barrier fins in a two pole panelboard breaker. A pin at one end of the fasten...

  • Ratcheting mechanism for industrial-rated circuit breaker

    Circuit Breaker Abstract An air circuit breaker ratcheting mechanism includes a ratchet and pawl whereby the closing springs charging gear is prevented from reverse rotation during the closing springs charging operation. Upon completion of the chargi...

  • Molded case circuit breaker having an improved electromagnetic trip

    Circuit Breaker Abstract An improved circuit interrupter having a solenoid in series with the line and load terminals with an armature operable to activate a trip mechanism within the circuit breaker upon experiencing current levels indicative of sho...

  • Circuit breaker

    Circuit Breaker Abstract A circuit breaker having superior shock and vibration resistance is provided. The circuit breaker has a handle pivoted from an off position to an on position. The circuit is closed by bringing a movable contact point into con...

  • Circuit breaker

    Circuit Breaker Abstract In a circuit breaker, a power source current transformer (2) comprises: a secondary coil (6) arranged between two legs (1a and 1b) of a U-shaped part of a main circuit conductor (1), and an iron core (7) including an iron cor...

  • Circuit breaker closing springs button interlock mechanism

    Circuit Breaker Abstract An air circuit breaker ratcheting mechanism includes a ratchet and pawl whereby the closing springs charging gear is prevented from reverse rotation during the closing springs charging operation. Upon completion of the chargi...

  • Overload protective circuit breaker switch

    Circuit Breaker Abstract An overload protective circuit breaker switch including: a first fixed contact and a second fixed contact adapted to connect an electric appliance to power supply; a movable contact adapted to form with the first fixed contac...

  • Electronic circuit breaker having modular current transformer sensors

    Circuit Breaker Abstract A compact current transformer is formed by arranging a pair of secondary windings on opposite sides of a single turn primary winding. A core is then wound about the primary winding and part of the secondary winding coils from...

  • Thermal trip unit with magnetic shield 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...

  • Thermal sensing bi-metal trip actuator for a circuit breaker

    Circuit Breaker Abstract An actuator (144) for initiating a trip of a circuit breaker. Load current passes through a conductor (66) that is electrically coupled to a contact arm (56) by a braid (62). A thermally responsive bi-metal (64) has a first e...

  • Contactor-circuit breaker

    Circuit Breaker Abstract Contactor-circuit breaker housing firstly power poles and an electromagnet serving to activate the moving contacts in contactor mode and including a fixed magnetic circuit, a moving magnetic circuit and a coil whose electric...

  • Circuit breaker panelboard enclosure

    Circuit Breaker Abstract A circuit breaker panelboard enclosure is adapted to receive circuit breaker covers that are attached to the interior or circuit breaker module without requiring attachment screws and the like. The circuit breaker modules wit...

  • Arc fault detector with protection against nuisance trips and circuit breaker incorporating same

    Circuit Breaker Abstract An arc fault detector of the type which generates a trip signal when a time attenuated accumulation of pulses produced each time an arc is struck reaches a selected value, includes a pulse conditioner which discriminates agai...

  • Molded case circuit breaker with modular crossbar

    Circuit Breaker Abstract A molded case circuit breaker has modular crossbar members which connect the contact arm carriers of a desired number of poles for opening and closing the separable contacts of all of the poles simultaneously by a single spri...

  • Coil shaped terminal for an electrodynamically operated circuit breaker

    Circuit Breaker Abstract A switch has at least one fixed and one moving contact located on a contact arm. The fixed contact is connected to a loop-shaped conductor segment, such that when current flows through the conductor segment, there is an elect...

  • Power circuit-breaker

    Circuit Breaker Abstract This power circuit-breaker has at least one cylindrically constructed arcing chamber which is provided with a stationary contact, with a moving contact and with a quenching zone between the two contacts. A shaft of the moving...

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  • Total 68 pages, 1156 patent(s)