摘要:
A control device suitable for use in a vehicle includes a circuit board and a thermal fuse holder including a removable spacer element and a plurality of breaker elements. The thermal fuse holder is attached at a terminal structure and, when the terminal structure is attached to the circuit board, the breaker elements engage the removable spacer element to hold the breaker elements at the circuit board. After terminals of the terminal structure and the breaker elements are soldered at the circuit board, the removable spacer element is removed from the thermal fuse holder, whereby the breaker elements are held at the circuit board via solder joints and are biased away from the circuit board. When the temperature at a respective solder joint exceeds a threshold temperature that melts the solder, the respective breaker element moves away from the circuit board to break the electrical connection at the solder joint.
摘要:
A thermal fuse device has an essentially annular frame made of electrically insulating material. First and second contact strips of electrically conductive material extend through opposite portions of the frame and have respective first ends extending inside the internal region of the frame, where they at least partially face each other, and respective second ends extending outside the frame for connection to an electrical or electronic circuit. The first end of the first contact strip is joined to the first end of the second contact strip by a quantity of heat-meltable material, in a condition where the first contact strip is resiliently pre-stressed so that, when the joint is broken, the first end of the first contact strip moves away from the first end of the second contact strip.
摘要:
The invention belongs to the field of over-voltage protection devices intended to protect sensitive electric/electronic devices and assemblies against effects of increased voltages, more precisely to the field of overvoltage protective devices provided with an electronic assembly intended to extend a life span of the basic component and to ensure a higher quality level of protection of electronic devices. The redundant overvoltage circuit breaker with a rotational disk and with an added electronic assembly intended to extend a life span of an overvoltage component is characterised in that it has a gas discharge tube (3) connected in series with a coil (5) and a resistor (4) with a positive thermal characteristic, and a gas discharge tube (6) connected parallel thereto; that a common point of these two branches prevents a route of leakage current via gas discharge tube (3) between the terminals, which can be connected to a line or neutral conductor, via varistor to an earthing point; that there is no leakage current in any of these two branches, since the varistor is galvanically separated between the clamp terminal and the earthing point; that in case of increased current surges the gas discharge tube (6) discharges through a branch of the varistor (7 and 8) into the earthing point; that the varistors (7 and 8) each has its own rotational circuit breaker (9 and 10).
摘要:
An electronic component has an integrated protective device which responds in the event of a thermal overload and interrupts a current flow through the component. The protective device has an electrical terminal which may be brought under spring pretension by intrinsic resilience and assumes a mounting position in the pretensioned state and a current interrupting position in the untensioned state.
摘要:
A reflowable thermal fuse includes a positive-temperature-coefficient (PTC) device that defines a first end and a second end, a conduction element that defines a first end and a second end in electrical communication with the second end of the PTC device, and a restraining element that defines a first end in electrical communication with the first end of the PTC device and a second end, in electrical communication with a second end of the conduction element. The restraining element is adapted to prevent the conduction element from coming out of electrical communication with the PTC device in an installation state of the thermal fuse. During a fault condition, heat applied to the thermal fuse diverts current flowing between the first end of the PTC device and the second end of the conduction element to the restraining element, causing the restraining element to release the conduction element and activate the fuse.
摘要:
A dual protection device for a circuit includes a first protection unit and a second protection unit functioning independently. The first protection unit includes an elastic contact piece having a first contact point and a first conductive member having a second contact point to contact with the first contact point. When overloaded, the elastic contact piece is deformed and bent toward an opposite direction to separate the first contact point from the second contact point, thereby protecting the circuit. The second protection unit has a flexible second conductive member disposed between the first conductive member and the second terminal. A fuse member forces a free end of the second conductive member to connect with the second terminal. When the fuse member melts due to high temperature, the free end of the second conductive member is separated from the second terminal, thereby protecting the circuit.
摘要:
The invention relates to a thermal fuse in a circuit structure, particularly a punched grid, having a plurality of circuit areas, having the circuit structure with connections sited (9) and having a fusible element (3), which is electrically and mechanically connected to the connection sites (9) of the circuit structure, the material of the fusible element (3) having a melting point, in order to melt at an ambient temperature greater than the melting point, such that material of the fusible element (3) collects at the connection sites (9) and the electrical connection formed by the fusible element (3) breaks.
摘要:
A temperature fuse protection device uses a hot melt metal to rivet for connecting two terminals in the circuit that are separated for making the two terminals electrically-connected and the circuit complete. There is a spacing in between the two free ends of the two terminals when no external force is being imposed. When an electric overloading or high circuit temperature event occurs, the hot melt metal would be heated to melt and break, which would then make the free ends of the two terminals to be disconnected, and therefore, the circuit will be at “OFF” status.
摘要:
A device (1) for protecting an electrical installation from overvoltages, having at least one protection component (2) and disconnection means (3) capable of changing from a closed configuration to an open configuration, as well as signalling means (5) capable of indicating the configuration of the disconnection means (3). The disconnection means (3) and the signalling means (5) respectively comprise a mobile disconnection element (4) and a mobile signalling element (12) arranged such that, when going from the closed configuration to the open configuration, the mobile disconnection element (4) moves in a rotational movement according to a first trajectory and cooperates with the mobile signalling element (12) to drive the mobile signalling element in rotation along a second trajectory different from the first trajectory.
摘要:
An overload protection for electric motors, includes a one-piece suppression choke in which the connecting point to be broken is produced by means of at least one connecting point between the connection lug of the motor and a respective connecting element of the suppression choke, wherein the connection lug exerts an adjustable mechanical stress on the connecting point, thus reliably assuring a break when the softening temperature of the solder of the breaking point is reached.