摘要:
An object of the present invention is to provide a protective element with which, while implementing a reduced height, a reliable blowout of a low-melting point metal upon a current path by heat of a heating body is possible. The protective element includes: a substrate (11) in which a concave portion (11a) is formed, a heating body (12) which is layered in the concave portion (11a); a second substrate (13) which is layered upon the substrate (11) to cover the heating body (12); first and second electrodes (14a), (14b) which are layered upon the surface of the substrate (11) on which the second substrate (13) is layered; a heating body electrode (15) which is layered upon the second substrate (13) to be superimposed with the heating body (12), and which is electrically connected to the heating body (12) and a current path between the first and the second electrodes; and a low-melting point element (16) which is layered from the heating body electrode to the first and second electrodes, and which causes a blowout of the current path between the first electrode and the second electrode by heating. The heating body electrode (15) is positioned in the same location relative to the first electrode (14a) and the second electrode (14b) which is specified in the thickness direction of the substrate (11).
摘要:
The invention belongs to the field of overvoltage 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:
The invention relates to a protective device for control electronics (2) of a motor vehicle component, in particular of a radiator fan drive, having a thermal protection element (1) disposed in the region between the control electronics (2) and a connecting lead frame (3), said thermal protection element tripping when the temperature in the control electronics (2) rises above a threshold temperature value. The thermal protection element (1) comprises two conductor segments (9, 10) having conductor ends (9a, 10a) that face each other and form an interruption point (11) and having one connecting end (9a, 10b) each, wherein the interruption point (11) is bridged by a fluxing agent (12), the fusion temperature thereof being matched to the threshold temperature value, and wherein one of the connecting ends (10b) of the thermal protection element (1) is connected to a contact (4) of the connecting lead frame (3) and the other connecting end (9b) is connected to a contact (5) of the control electronics (2).
摘要:
The invention relates to a thermal disconnection device, comprising a first conductor section and a second conductor section, wherein the first conductor section is guided in a surrounding insulating body at least in some sections, wherein the first conductor section and the second conductor section are connected to each other at a detachable contact point, wherein the first conductor section is subjected to a force so that the first conductor section is moved into the surrounding insulating body when the contact point is detached.