Patent classifications
H01H71/50
ELECTRICAL OVERLOAD PROTECTION DEVICE AND METHOD OF USE
An electrical overload protection device for readily identifying and resetting a tripped circuit breaker includes a button, which is retained in depressed and extended configurations by a biaser. A first end and a second end of a plate spring are attached to the housing and the biaser, respectively. A bimetal strip, which is attached to and positioned in the housing, is reversibly deformable and thus bendable upon exposure to a specified current. Depressing the button contacts the biaser with the bimetal strip to complete an electrical circuit, which, should it exceed the specified current, bends the bimetal strip to actuate the plate spring to extend a shaft from the housing. The bending also disengages the biaser from the bimetal strip and breaks the electrical circuit. Depressing the shaft reverses deformation of the bimetal strip and reextends the button so it is again depressible to complete the electrical circuit.
Power switch enclosure
A power switch including a line input configured to receive a line voltage, a load output configured to output the line voltage, a contact, a switch, a housing including a rear portion and a front cover coupled to the rear portion, an indicator supported by the front cover, the indicator configured to provide an indication of the power switch, and an indicator lens positioned between the indicator and the front cover. The contact is configured to selectively electrically connect the line input to the load output, the contact having a closed position in which the line input is electrically connected to the load output, and an open position in which the line input is not electrically connected to the load output. The switch is configured to selectively control the contract between the open position and the closed position.
IMPROVED STRUCTURE OF GROUND FAULT CIRCUIT INTERRUPTER
A structure of a ground fault circuit interrupter includes a locking arm, which is provided with a stop surface, disposed inside the ground fault circuit interrupter, and a support body fixedly connected to a soft magnet is provided with a stop portion which can interfere with the stop surface that is moving downward. The locking arm is also connected to an elastic element, and under a normal state, the elastic element moves downward the stop surface of the locking arm to interfere with the stop portion of the support body, so that the soft magnet is prevented from moving toward a permanent magnet The locking arm can also be pushed down and driven by a reset button to move upward the stop surface, so that the stop portion and the stop surface no longer interfere with each other.
SHALLOW ELECTRICAL PROTECTION DEVICE (GFCI, AFCI, AND AFCI/GFCI) SYSTEM AND METHOD
An electrical outlet receptacle including a circuit board, a set of fixed contacts and a set of movable contacts, a solenoid, a carriage, a lifting shelf, a slide mechanism, a reset plunger, and an armature.
Leakage protector
The present disclosure discloses a leakage protector, and relates to the technical field of electrical apparatus protection. The leakage protector includes a protector device, pins, a bottom plate and a elastic sheet. The protector device includes a communication maintaining device, a communication device and a locking device. The locking device includes an elastic sheet pressing block and a locking deflector rod. The locking device includes a latch, a movable pressing plate and a hasp slide way, the latch, the movable pressing plate and the hasp slide way is provided on the locking deflector rod. The locking device includes a pressing rod, a hasp and a vertical fork groove, the pressing rod, the hasp and the vertical fork groove is provided on the elastic sheet pressing block.
OVERLOAD PROTECTION SWITCH WITH REVERSE RESTART SWITCHING STRUCTURE
An overload protection switch with reverse restart switching structure, particularly to one that has a molded-case circuit breaker which adding a lampshade parallel stagnation position for overload indication, and when resetting, needs to press back to the RESET for reconfirmation; due to the stagnation position and reverse restart structure, it can avoid repeating the reset action, preventing the reduction of the life of the overload protection switch and repeated exposure or the misjudgment and then resetting of electrical products that have been overloaded and tripped and then overload again then results in causing dangerous; also, the lampshade can be completely tripped even when the lampshade is suppressed, and prevent the danger of repeated tripping during overload.
Shallow electrical protection device (GFCI, AFCI, and AFCI/GFCI) system and method
A resettable switching apparatus, useful in a GFCI receptacle, has a housing with a face plate and at least one sense transformer core positioned to define a current flow direction through a center cavity that is parallel to the face plate. The GFCI receptacle further includes a space-efficient coaxial configuration in which a mechanical latching arrangement for resetting (i.e., closing) main switch contacts is disposed inside the trip solenoid. A movable carriage for the main contacts spans one end of the solenoid and has a latching portion in the solenoid that engages the inner end of a reset plunger in two sequential states (i.e., unlatched and latched). The mechanical latching arrangement comprises a cam surface coupled to a lifting plate, which is connected to the carriage of the GFCI receptacle. The cam surface is responsible for translating a downward movement to a translational movement to engage the carriage to the rest plunger.
Solid state circuit interrupter
A circuit interrupter including a current sensor having a normal sensor output and an over current detection output, a solid state switch module structured to have a closed state to allow current to flow through the circuit interrupter and an open state to interrupt current flowing through the circuit interrupter, a gate driver structured to control the solid state switch module including a desaturation function output, wherein the gate driver is structured to cause the solid state switch module to interrupt current flowing through the circuit interrupter when the DESAT function output changes to the on state, and an electronic trip circuit structured to output a trip signal to the gate driver when the normal sensor output reaches a first threshold level or the overcurrent detection output changes to the on state.
Circuit breakers with handle bearing pins
Circuit breakers with handles having at least one handle bearing pin that contacts an upper end portion of a moving arm and allows the arm to rotate to “OFF”, “ON” and “TRIP” positions, typically about 90 degrees of rotation.
Safety switch and associated methods
A cable pull switch includes a polychotomous sensor configured to provide a reading of at least one of a plurality of values, the reading corresponding to a tension on a pull cable or a linear displacement of an end of a pull cable. A processor coupled to the polychotomous cable pull sensor configured to determine a rate of change of the value of the reading from the sensor and determine an occurrence of a cable pull event, the determination based on the determined rate of change of the value, and determine whether the rate of change of the value of an electrical resistance through the polychotomous cable pull sensor is below a threshold rate of change value, and adjust an upper pull threshold value to a new upper pull threshold value that is based on a present reading of the value of the electrical resistance through the strain gauge.