Abstract: A thermally protected varistor includes a varistor chip, a temperature fuse, and a lead line, wherein the varistor chip includes a first conductive layer and a second conductive layer, and the lead line includes a first lead line, a second lead line, and a third lead line. One end of the first lead line is connected to the first conductive layer, and the other end of the first lead line is led out. A first end of the temperature fuse is led out as the second lead line, and a second end of the temperature fuse is connected to the second conductive layer. One end of the third lead line is connected to the second conductive layer, and the other end of the third lead line is led out. The temperature fuse is an axial temperature fuse and is tightly attached to the varistor chip.

Abstract: The present invention discloses a thermal fuse having dual metal elastic clamps, comprising: an insulating cylindrical tube; a first metal cap, a temperature sensing chamber formed by the first metal cap, the second metal tube and the inner side wall of the middle part of the through hole. The temperature sensing chamber axially arranges a plurality of components in the following sequence: a compressed spring; an insulating supporting pillar; a second metal elastic clamp; a connecting pillar a first metal elastic clamp; an organic temperature sensing body capable of melting when heating. The first metal elastic clamp, the second metal elastic clamp and the connecting pillar forms a movable conductive bridge. The movable conductive bridge slides flexibly in the temperature sensing chamber and has low contacting resistance with the first metal cap and the second metal tube. The above structure can withstand large current and has high reliability.

Abstract: This disclosure discloses a photocontrol device with a surge protecting function, including: a photocontrol unit, a surge protection unit, and a device base. The photocontrol unit includes a plug; the device base includes a socket corresponding to the plug; the photocontrol unit is connected to the surge protection unit to form a whole body, which is connected to the device base. The surge protection unit is connected in parallel to a phase line terminal and a neutral line terminal of the photocontrol unit, a ground line terminal of the surge protection unit is connected to a conductive part on the device base by at least a ground connector, and the conductive part is connected to ground. The ground line terminal can be attached on the outer surface of the surge protection unit, and also can be connected to the device base via a ground connector.

Abstract: This disclosure discloses a photocontrol device with a surge protecting function, including: a photocontrol unit, a surge protection unit, and a device base. The photocontrol unit includes a plug; the device base includes a socket corresponding to the plug; the photocontrol unit is connected to the surge protection unit to form a whole body, which is connected to the device base. The surge protection unit is connected in parallel to a phase line terminal and a neutral line terminal of the photocontrol unit, a ground line terminal of the surge protection unit is connected to a conductive part on the device base by at least a ground connector, and the conductive part is connected to ground. The ground line terminal can be attached on the outer surface of the surge protection unit, and also can be connected to the device base via a ground connector.

Abstract: An photocontroller with surge protecting function includes an photocontroller unit, a surge protection unit, and an photocontroller base. On the basis of an existing photocontroller unit and an existing photocontroller base, the surge protection unit is integrated inside the photocontroller unit or the surge protection unit can be connected in a plug-in manner. The surge protection unit is connected in parallel to a power supply phase line terminal and a neutral line terminal of the photocontroller unit. A ground line terminal of the surge protection unit is connected, by means of a ground connector, to the conductive part disposed on the photocontroller base. The conductive piece is grounded. The photocontroller and the surge protection function are combined, which can effectively discharge a surge current, suppress a surge voltage, is easy to mount and replace, and can reduce post-maintenance cost.

Abstract: A high-voltage direct-current thermal fuse, includes a high-voltage low-current thermal fuse connected to a high-voltage direct-current circuit. The high-voltage low-current thermal fuse includes a casing, fusible alloy wires, and two leads extending out of the casing. The fusible alloy wires are connected between the two leads. One of the leads is sequentially sleeved with an arc extinguishing sleeve and a spring. One end of the arc extinguishing sleeve is in contact with the fusible alloy wires; and the other end of the arc extinguishing sleeve is in contact with the spring. One end of the spring is connected to the internal end face of the casing; and the spring is in a compressed state. The high-voltage direct-current thermal fuse further includes a conventional thermal fuse connected in parallel to the high-voltage low-current thermal fuse; or further includes a current fuse connected in series with the high-voltage low-current thermal fuse.

Abstract: A high-voltage direct-current thermal fuse comprising a high-voltage low-current thermal fuse connected to a high-voltage direct-current circuit. The high-voltage low-current thermal fuse comprises a casing, fusible alloy wires, wherein the fusible alloy wires are connected between the two leads. One of the leads is sequentially sleeved with an arc extinguishing sleeve and a spring. One end of the arc extinguishing sleeve is in contact with the fusible alloy wires; and the other end of the arc extinguishing sleeve is in contact with the spring. One end of the spring is connected to the inner end face of the casing; and the spring is in a compressed state. The high-voltage direct-current thermal fuse further comprises a conventional thermal fuse; or further comprises a current. The high-voltage direct-current thermal fuse solves the problem of timely arc cutting-off and can be directly applied to a high-voltage direct-current circuit.

Abstract: The present invention discloses a device comprising a thermal fuse, a resistor and a protective casing. The protective casing provides housing for the thermal fuse and the resistor and increases the anti-explosion properties and insulating and voltage-withstanding properties at the same time. The thermal fuse and the resistor can be used as a basic unit and be directly installed into a switch-mode power supply. It is capable of replacing the existing simple wirewound resistor or the wirewound resistor with an external contact type thermal fuse, and realizing the functions of general impedance, over-current fuse protection, surge protection, anti-explosion and over-temperature protection in case of overloading.

Abstract: An photocontroller with surge protecting function includes an photocontroller unit, a surge protection unit, and an photocontroller base. On the basis of an existing photocontroller unit and an existing photocontroller base, the surge protection unit is integrated inside the photocontroller unit or the surge protection unit can be connected in a plug-in manner. The surge protection unit is connected in parallel to a power supply phase line terminal and a neutral line terminal of the photocontroller unit. A ground line terminal of the surge protection unit is connected, by means of as ground connector, to the conductive part disposed on the photocontroller base. The conductive piece is grounded. The photocontroller and the surge protection function are combined, which can effectively discharge a surge current, suppress a surge voltage, is easy to mount and replace, and can reduce post-maintenance cost.

Abstract: An electronic protection component comprises an outer case bounding an outer cavity therein; a varistor with a first varistor lead connected to a first varistor electrode and a second varistor lead connected to a second varistor electrode, wherein the varistor is placed in the outer cavity; a low melting point alloy wire with a first thermal fuse lead in one end and a second thermal fuse lead in the other end; wherein either the first thermal fuse lead or the second fuse lead is connected to either the first varistor electrode or the second varistor electrode therefore forming a lead junction.

Abstract: The present invention discloses a device comprising a thermal fuse, a resistor and a protective casing. The protective casing provides housing for the thermal fuse and the resistor and increases the anti-explosion properties and insulating and voltage-withstanding properties at the same time. The thermal fuse and the resistor can be used as a basic unit and be directly installed into a switch-mode power supply. It is capable of replacing the existing simple wirewound resistor or the wirewound resistor with an external contact type thermal fuse, and realizing the functions of general impedance, over-current fuse protection, surge protection, anti-explosion and over-temperature protection in case of overloading.

Abstract: The present invention discloses a thermal fuse having dual metal elastic clamps, comprising: an insulating cylindrical tube; a first metal cap, a temperature sensing chamber formed by the first metal cap, the second metal tube and the inner side wall of the middle part of the through hole. The temperature sensing chamber axially arranges a plurality of components in the following sequence: a compressed spring; an insulating supporting pillar; a second metal elastic clamp; a connecting pillar a first metal elastic clamp; an organic temperature sensing body capable of melting when heating. The first metal elastic clamp, the second metal elastic clamp and the connecting pillar forms a movable conductive bridge. The movable conductive bridge slides flexibly in the temperature sensing chamber and has low contacting resistance with the first metal cap and the second metal tube. The above structure can withstand large current and has high reliability.

Abstract: The present invention discloses a device comprising a thermal fuse and a resistor, the solid ceramic base of the wirewound resistor is changed to be hollow, forming a ceramic tube; the thermal fuse is placed in the solid ceramic base, the ceramic tube provides housing for the thermal fuse; a lead wire of the thermal fuse passes through an end cap of an end of the wirewound resistor, the other end of the thermal fuse extends out of the end cap of the other end of the wirewound resistor, the end cap of the wirewound resistor extends outwardly with a lead wire, then an epoxy resin is used to encapsulate the device. The present invention can be used as a basic unit and directly installed in an existing high-frequency charger; it is capable of replacing the existing simple wirewound resistor or the wirewound resistor with an external contact type thermal fuse, and realizing triple functions of general impedance, over-current fuse protection, and over-temperature protection in case of overload.

Abstract: An electronic protection component comprises an outer case bounding an outer cavity therein; a varistor with a first varistor lead connected to a first varistor electrode and a second varistor lead connected to a second varistor electrode, wherein the varistor is placed in the outer cavity; a low melting point alloy wire with a first thermal fuse lead in one end and a second thermal fuse lead in the other end; wherein either the first thermal fuse lead or the second fuse lead is connected to either the first varistor electrode or the second varistor electrode therefore forming a lead junction.

Abstract: An electronic protection component incorporates both a varistor and an alloy-type thermal fuse. In one embodiment, a melting promoting agent or flux contacts and surrounds both the varistor and the fuse in common in a shared cavity of a case. In another embodiment, the fuse and the flux are disposed in an inner case, which is disposed in contact with the varistor in an outer case. Thus, the varistor and the thermal fuse are incorporated so that the speed of heat transfer is fast, the response time is fast, and the installation for use is convenient.

Abstract: A device combining a thermal fuse and a resistor has a solid ceramic base of the wirewound resistor is changed to be hollow, a thermal fuse is disposed inside the ceramic base, the ceramic tube is the housing of the thermal fuse, one lead wire of the thermal fuse is passing through the end cap of one end of the wirewound resistor, the other end of the thermal fuse is extended out of the end cap of the other end of the wirewound resistor, the end cap of the wirewound resistor is extended out with a lead wire, then the whole product is encapsulated by epoxy resin. The device can serve as a basic unit, which is directly assembled to an existing high-frequency charger, it can take the place of the existing simple wirewound resistor or the wirewound resistor with a thermal fuse external contacted.

Abstract: A varistor with an alloy-type thermal fuse includes a varistor, an alloy-type thermal fuse and a closed cavity. The varistor and the alloy-type thermal fuse are placed in the closed cavity with one surface of the varistor being close to one surface of the alloy-type thermal fuse. The leads of the varistor and the alloy-type thermal fuse extend outside of the closed cavity. The closed cavity is filled with an alloy flux.