30results about "Provisions for switching neutral conductor" patented technology

An electrical panel is operable to receive electrical power from a first power supply and a second power supply. The electrical panel includes a neutral bus conductor having a stab configured to engage one or more switching devices and a separation formed in a bus conductor to electrically isolate one of the stabs.

The invention discloses an operation device of a miniature multi-pole circuit breaker. The operation device comprises a handle, a rotary plate mounted on a housing in a pivoting manner by a mandrel, two pairs of contacts capable of performing closing / breaking matching, two electromagnetic tripping devices arranged side by side, and two thermal tripping devices arranged side by side, wherein a tripping connecting rod provided with a lock hook is mounted on the rotary plate in a pivoting manner by a first twisting shaft; a lock tooth, a control element capable of being matched with the electromagnetic tripping devices of the adjacent two-pole circuit breaker, and an actuating rod capable of being matched with bimetallic strips of the thermal tripping devices of the adjacent two-pole circuit breaker are arranged on a tripping rod which is mounted on the rotary plate in a pivoting manner by a second twisting shaft; the two ends of a U-shaped rod are connected with the handle and a hinge of the tripping connecting rod respectively; two short-circuit short columns arranged on the control element side by side are matched with actuating ejection rods of the two electromagnetic tripping devices in a triggering manner respectively; and two overload short columns arranged on the actuating rod side by side are matched with the bimetallic strips of the two thermal tripping devices in a triggering manner respectively. The tripping rod can be controlled by the two adjacent groups of independent tripping devices; and the operation device is small in size, compact in structure and more reliable in motion.

The invention discloses an electric device with differential protection, wherein a differential protection device comprises a case (203) including two main boards (204; 302) and output terminals (209, 210, 311, 312) arranged on first side plate (205, 303), also comprises a circuit breaker part (211) including a compartment (235) having walls (241, 331) arranged with at least first via holes (242,243; 332, 333), also comprises a differential protection part (212), separated from the circuit breaker part (211) through separators (213; 351) parallel to the main boards, wherein the walls (241, 331) is basically parallel to a side plate of a case and the connecting conductors get across at least one second via hole arranged on the separator.

A housing for a single-pole circuit breaker is disclosed. The housing includes two current path regions, each region having a first section configured to receive an electromagnetic protection device, a second section configured to receive a thermal protection device, a third section configured to receive an arc extinguishing device, and a fourth section configured to receive an operating mechanism device. Each first section occupies a substantial part of the available internal width of the housing, and is disposed between the respective third and fourth sections. Each second section occupies about half the available internal width of the housing.

A load center includes an arc fault circuit interrupter comprising a plurality of contacts, an operating mechanism for separating the contacts, and an arc fault trip mechanism to generate a trip signal in the event of an arc fault detection. The load center also includes a neutral link electrically connected to the arc fault trip mechanism and the plurality of contacts. The load center further includes a mounting rail operatively coupled to the arc fault circuit interrupter, the arc fault circuit interrupter directly supported by the mounting rail. The load center yet further includes a neutral busbar and a plug-in neutral conductor electrically connecting the mounting rail to the neutral busbar.

The circuit breaker is fabricated by an assembly step that makes a circuit breaker assembly with a moving contact metal plate, stationary contact metal plate, and bimetallic strip disposed in prescribed locations in an external case; and an anneal step that introduces the circuit breaker assembly made in the assembly step into an anneal oven, heats the circuit breaker assembly in the anneal oven and then cools it to anneal both the moving contact metal plate and the bimetallic strip and produce a heat-treated circuit breaker.

The invention provides a residual current operated circuit breaker. The circuit breaker comprises a shell, an electromagnetic tripping device, an arc extinguishing device, a first operating mechanism,a second operating mechanism, an electric leakage tripping device, a first terminal assembly, a second terminal assembly, a third terminal assembly and a soft wire assembly, wherein one side of a mounting shell is provided with a mounting gap, the first terminal assembly can run through the mounting gap and be clamped in a space formed by a first shell and a second shell; the second terminal assembly is accommodated in a first accommodating chamber; the third terminal assembly is accommodated in a second accommodating chamber; and the soft wire assembly is accommodated in the second accommodating chamber. According to the residual current operated circuit breaker, the protection function of the product is more complete, the structural layout of the shell is more compact, and the product mounting and wiring process is more convenient and reliable.

A thermomagnetic switch (1) is described comprising: a box-type body comprising an intermediate wall (3) which defines respective phase and neutral housings (3f, 3n), movable phase and neutral contacts (18f, 18n) destined to come into contact with respective fixed phase and neutral contacts (6f, 6n), a kinematic mechanism connected to the mobile contacts (18n, 18f) to bring them from a closed position to an open position, a push button (11) that can be operated from the outside and that is connected to the kinematic mechanism, and a coupling lever (26) - connected to the kinematic mechanism - which can be operated through the intervention of a thermal (22) and / or of an electromagnetic (50f) and / or of a differential device (100, 50d). The kinematic mechanism comprises a contact-carrying lever (117) made in a single piece and provided with two arms (121), which extend into the phase and neutral housing (3f, 3n). Each arm (121) comprises a seat (118) able to receive the respective movable phase and neutral contact (18f, 18n).

Provided herein is a power transmission mechanism of a four poles circuit breaker in which the contact points of a neutral pole thereof are brought into contact earlier at the time of closing and separated later at the time of opening than those of the other poles thereof, and according to the present invention, there is disclosed a power transmission mechanism of a four poles circuit breaker comprising: a switching shaft configured to provide a driving force for switching to the movable contactors of the poles; an arm provided to correspond to the four poles to transfer the rotational torque of the switching shaft; and a link configured to transfer the rotational torque of the arm to the movable contactor as a switching force, and provided to correspond to the four poles, wherein the sum of the length of the arm and the link in a neutral pole is longer than the sum of the length of the arm and the link in the poles excluding the neutral pole.

The invention relates to an electric switch, namely, a breaker, in particular to an operating mechanism for operating a switch to be switched on or switched off in the electric switch. The operating mechanism in the technical scheme is characterized in that an N-pole operating device is also arranged between a middle base and a base of the electric switch, and comprises an N-pole moving contact, a second tension spring, a connecting shaft and abutting against pins, the connecting shaft is arranged in a long hole in the upper portion of the middle base of the electric switch, an arc abutting against face is arranged in the middle of the N-pole moving contact, the abutting against pins are arranged between the middle base and the base of the electric switch, the abutting against pins and the arc abutting against face are correspondingly arranged, one end of the second tension spring is connected on a connecting hole or a connecting boss, the other end of the second tension spring is connected on the middle base or the base of the electric switch. According to the technical scheme, the novel operating mechanism of the electric switch is good in voltage-resistant effect during disjunction, and product explosion is not prone to occurrence.

The invention provides a residual current operated circuit breaker. The circuit breaker includes: a housing; an electromagnetic tripping device and an arc extinguishing device; a first operating mechanism and a second operating mechanism; a leakage tripping device; a first terminal assembly, the mounting housing There is a mounting gap on one side, and the first terminal assembly can penetrate the mounting gap and be clamped in the space formed by the first housing and the second housing; a second terminal assembly is housed in In the first accommodation chamber; a third terminal assembly, which is accommodated in the second accommodation cavity; and a flexible wire assembly with a function of opening and closing contacts, which is accommodated in the second accommodation cavity. According to the residual current-operated circuit breaker of the present invention, the protection function of the product is more perfect, the structural layout of the housing is more compact, and the product installation and wiring processes are more convenient and reliable.

A thermomagnetic switch (1) is described comprising: a box-type body comprising an intermediate wall (3) which defines respective phase and neutral housings (3f, 3n), movable phase and neutral contacts (18f, 18n) destined to come into contact with respective fixed phase and neutral contacts (6f, 6n), a kinematic mechanism connected to the mobile contacts (18n, 18f) to bring them from a closed position to an open position, a push button (11) that can be operated from the outside and that is connected to the kinematic mechanism, and a coupling lever (26) - connected to the kinematic mechanism -which can be operated through the intervention of a thermal (22) and / or of an electromagnetic (50f) and / or of a differential device (100, 50d). The kinematic mechanism comprises a contact-carrying lever (117) made in a single piece and provided with two arms (121), which extend into the phase and neutral housing (3f, 3n). Each arm (121) comprises a seat (118) able to receive the respective movablephase and neutral contact (18f, 18n).

The circuit breaker is fabricated by an assembly step that makes a circuit breaker assembly with a moving contact metal plate, stationary contact metal plate, and bimetallic strip disposed in prescribed locations in an external case; and an anneal step that introduces the circuit breaker assembly made in the assembly step into an anneal oven, heats the circuit breaker assembly in the anneal oven and then cools it to anneal both the moving contact metal plate and the bimetallic strip and produce a heat-treated circuit breaker.

#CMT# # / CMT# The device has a phase mobile contact and a neutral mobile contact that are carried by a first end of contact arms. Each arm is mounted around a pivot (21) for allowing pivoting of the arm toward a closing position of the contacts. Contact pressure units comprise two torsion springs acting independently and respectively on the contact arms. Each spring is arranged with respect to the arms on which the springs act such that a rotation axis of the springs is shifted toward a second end of the arms with respect to a pivot axis. #CMT#USE : # / CMT# Cut-off device for use in a circuit breaker e.g. single-pole circuit breaker and neutral circuit breaker, utilized in distribution installations i.e. buildings, to protect an electrical circuit. #CMT#ADVANTAGE : # / CMT# The contact pressure units comprise the torsion springs that are arranged with respect to the contact arms on which the springs act such that the rotation axis of the springs is shifted toward the second end of the arms with respect to the pivot axis so as to allow the springs to be positioned with respect to a shaft in simple and easy manner, thus reducing force exerted by the springs on the contact arms and reducing dimensions of the pressure units, and hence reducing complexity of a control mechanism of the device. #CMT#DESCRIPTION OF DRAWINGS : # / CMT# The drawing shows a partial view of a cut-off device with a control mechanism in which one of contact arms permits visualization of a support lever and contact pressure units. 21 : Pivot 41 : Support lever 51 : Tie rod 61 : Mechanical connection 63 : Pivot pin.

Provided herein is a power transmission mechanism for a four poles circuit breaker in which the contacts of a neutral pole thereof are brought into contact earlier at the time of closing and separated later at the time of opening than those of the other poles thereof, and according to the present invention, there is disclosed a power transmission mechanism for a four poles circuit breaker comprising: a switching shaft (12) configured to provide a driving force for switching to the movable contactors of the poles; an arm (13a, 13b, 13c, 13d) provided to correspond to the four poles to transfer the rotational torque of the switching shaft; and a link (14b, 14d) configured to transfer the rotational torque of the arm to the movable contactor as a switching force, and provided to correspond to the four poles, wherein the sum of the length of the arm and the link in a neutral pole is longer than the sum of the length of the arm and the link in the poles excluding the neutral pole.

The invention relates to a switching device, comprising an insulating shell for containing a movable contact. The movable contact is supported by first ends of at least two contact arms surrounding a pivot pin (21) respectively so that the contact arm rotates to the closed position of the contact. The device comprises a contact pressure-applying tool. The contact pressure-applying tool comprises two torsion springs (31, 32) independently acting on the contact arms. Corresponding to the acted contact arm, each torsion spring is configured so that the rotary axis of a spring deviates to the second end of the contact arm corresponding to the axis of the pivot pin.

A circuit interrupter (11,11',11'') includes a sensor (12,12') structured to output a sensor signal, a control unit (16) structured to receive an external control signal, the control unit including: a communication interface (20) structured to receive the external control signal, and a waveform generator (22) structured to generate a waveform equivalent to the sensor signal in response to the external control, and a signal processing circuit (14) structured to receive and process the sensor signal or the generated waveform and to output the processed sensor signal or generated waveform to the control unit.

A circuit breaker has a first stationary contact connected to line power and a second stationary contact connected to a neutral. A first moveable contact coupled to a load power terminal, is mounted on a moveable actuator and juxtaposed with the first stationary contact to form a power circuit when the first moveable and first stationary contacts are closed. A second moveable contact connected toa load neutral terminal is mounted on the moveable actuator juxtaposed with the second stationary contact to form a neutral circuit when the second moveable and second stationary contacts are closed.The movable actuator moves the first and second moveable contacts in unison to open the power circuit between the first stationary and first moveable contacts and to simultaneously open the neutral circuit between the second stationary and second moveable contacts, in response to actuation of an operating handle or to sensing a tripping event.

The invention relates to a circuit interrupter device, comprising: a phase line circuit interrupter, which is configured to interrupt a conduction path of the phase line circuit interrupter if a sensor of the phase line circuit interrupter detects a fault; and a neutral line interrupter configured to interrupt a conductive path of the neutral line interrupter if a sensor of the neutral line interrupter detects a fault; wherein the phase line interrupter and the neutral line interrupter are configured to: interrupt a respective conduction path independently of the other line interrupter if a respective fault is detected; and the phase line interrupter and the neutral line interrupter are configured to trigger the respective other line interrupter to interrupt the current path of the respective other line interrupter if a fault is detected by one of the line interrupters.