Circuit BreakerFree Patent Search

  • Circuit breaker lockout device

    Circuit Breaker Abstract A circuit breaker lockout device for securing a toggle switch of a circuit breaker includes a pivotable thumb screw for selectively engaging a set screw for securing the lockout device to the toggle switch and including a sha...

  • Gas insulated high voltage circuit breaker including tulip contact assembly and insertion resistor

    Circuit Breaker Abstract A circuit breaker includes a tank grounded and filled with an insulating gas, a first electrical series-connected section having a main conductor and a main breaking section, and a second electrical series-connected section h...

  • Circuit-breaker with grounded metal enclosure

    Circuit Breaker Abstract A grounded metal enclosure circuit-breaker comprises, for each pole, a metal enclosure having two insulative bushings. The enclosure and the bushings are adapted to be filled with insulative gas. The enclosure contains first...

  • Circuit breaker tester

    Circuit Breaker Abstract A circuit breaker tripper includes a first charging circuit for charging an RC shorting time control circuit. A relay is connected to a pair of probes that are connected to an active line which enables a charging of the RC sh...

  • Puffer-type circuit breaker and nozzle emitting gas with coaxial abutting plastic tube

    Circuit Breaker Abstract A compressed-gas circuit breaker is provided with two contacts arranged coaxially opposite one another, at least one of which can be driven to move in the axial direction. The two contacts define in the interrupted state a co...

  • Circuit breaker shunt trip accessory with mechanical override

    Circuit Breaker Abstract 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 signal. A mechanical override fea...

  • Circuit-breaker provided with a closure resistance having an insertion assembly

    Circuit Breaker Abstract A circuit-breaker including a moving assembly having a moving main contact (14) electrically connected to a first terminal (2A), a fixed assembly having a fixed arcing contact electrically connected to a resistance (5) which...

  • Switchable circuit breaker

    Circuit Breaker Abstract A switchable circuit breaker having a housing, stationary and moveable contacts, a switching member for actuating the contacts to assume a first condition in which the contacts are open and a second condition in which the con...

  • Locking plate for stab terminal for front access circuit breaker

    Circuit Breaker Abstract A locking plate for releasably securing a circuit breaker to a module includes a back portion for supporting a circuit breaker, legs connected to the back portion for releasably engaging a terminal of the circuit breaker and...

  • Molded case circuit breaker with arc suppressant features including magnetically permeable arc horn m

    Circuit Breaker Abstract An electromagnetic circuit breaker is provided with a copper plated arc horn on the top side of the movable contact arm opposite the movable contact. The horn extends beyond the movable contact and has an upturned sweep so as...

  • Circuit breaker

    Circuit Breaker Abstract A circuit breaker (1) with a terminal connector (5). The terminal connector (5) has engagement means provided by outwardly extending male spade connectors (9a-9d) arranged in two spaced-apart offset parallel rows (7, 8). The...

  • Metal-encapsulated, gas-insulated high-voltage circuit-breaker

    Circuit Breaker Abstract A metal-encapsulated, gas-insulated high-voltage circuit-breaker includes a fixed contact configuration which is accommodated in its own fixed contact housing, and a moving contact piece configuration which is driven by a fir...

  • Hydraulic drive device for circuit breaker and circuit breaker using the same

    Circuit Breaker Abstract Occurrence of erroneous operation in which circuit closing operation unexpectedly happens after circuit opening operation even though an abnormality such that a circuit closing system is left in a circuit closing condition ev...

  • Circuit breaker terminal tubulator protection assembly for diverting discharged ionized gasses

    Circuit Breaker Abstract An electrically insulated turbulator for use in an electrical device for automatically interrupting an overload current is a one-piece molded assembly with an arcuate portion arranged around a terminal screw and a downwardly...

  • Circuit breaker having variable arc gas venting

    Circuit Breaker Abstract Circuit breaker arc exhaust apertures in the line end of the circuit breaker case transfer arc gases from the circuit breaker interior during overcurrent circuit interruption. A flexible shield protects the circuit breaker te...

  • Snap-on circuit breaker mounting system

    Circuit Breaker Abstract The present invention provides a mounting system for circuit breakers in an electrical panelboard assembly. The base and cover forming the circuit breaker casing has an integral foot extending from a bottom side. The foot is...

  • Current limiting circuit breaker

    Circuit Breaker Abstract A molded plastic current limiting circuit breaker includes an interrupter assembly that includes an over-molded magnet, arc stack, baffle stack, and a chamber liner in which a trip unit is described. Circuit Breaker Claims Wh...

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  • Total 68 pages, 1156 patent(s)