摘要:
A surge protective device (SPD) module includes a module housing, first and second module electrical terminals mounted on the module housing, a gas discharge tube (GDT) mounted in the module housing, and a fail-safe mechanism mounted in the module housing. The GDT includes a first GDT terminal electrically connected to the first module electrical terminal and a second GDT terminal electrically connected to the second module electrical terminal. The fail-safe mechanism includes: an electrically conductive shorting bar positioned in a ready position and repositionable to a shorting position; a biasing member applying a biasing load to the shorting bar to direct the shorting bar from the ready position to the shorting position; and a meltable member. The meltable member maintains the shorting bar in the ready position and melts in response to a prescribed temperature to permit the shorting bar to transition from the ready position to the shorting position under the biasing load of the biasing member. In the shorting position, the shorting bar forms an electrical short circuit between the first and second GDT terminals to bypass the GDT.
摘要:
Temperature protection device (1) for use in an electrical power circuit for protecting said electrical power circuit against heating, comprising a first contact element (5) and a second contact element (10), which are connected to one another by the ends (7, 12) thereof, and are designed in such a way that the ends (7, 12) of said first and said second contact elements (5, 10) that are connected to one another separate from one another when a limit temperature is exceeded because of a mechanical pretension between the two ends (7, 12), thereby interrupting the electrical circuit, wherein at least the ends (7, 12) of the contact elements (5, 10) have a material with a higher recrystallization temperature than pure copper.
摘要:
An electrical component has at least two electrodes (4,5) which become short-circuited when a temperature responsive device associated with the component and formed by a resilient wire (1) covered by a sleeve (2) of heat shrinkable material responds to an increase in temperature. The heat shrinkable sleeve (2) is made of a plastics material having a heat responsive memory and is formed so as to shrink longitudinally on the application of heat to thereby initiate the short-circuiting function.
摘要:
L'invention concerne un circuit de surveillance de la température environnant ce circuit, comprenant : un élément de stockage de charges ; un élément d'évacuation de charges ; et un interrupteur thermomécanique connectant l'élément de stockage à l'élément d'évacuation, ledit interrupteur étant adapté à se fermer, sans que le circuit soit alimenté électriquement, lorsque la température excède un seuil.
摘要:
Temperature sensor device that allows changes of temperature (14) to be detected, as the materials that form said device (1) are deformed, that consists of a body formed by two valves (2) and a structure (8) provided in the hollow interior (7), so that they join together with the aid of a number of bolts (5), it having been envisaged that in one of the bolts (5) and in the structure (8) electrical terminals (4) are positioned, separated a distance (12) from each other, so that when an increase in temperature (14) takes place, it causes the deformation of the components of the device (1), allowing contact of the electrical terminals on having reached the critical temperature (14), and producing the activation of a warning device (13) with the aid of a conductive medium (10)
摘要:
A simplified snap-action micromachined thermal switch having a bimodal thermal actuator fabricated from non-ductile materials such as silicon, glass, silicon oxide, tungsten, and other suitable materials using MEMS techniques.
摘要:
Thermische Schaltvorrichtung, insbesondere für Haushaltsgeräte, Lüftungs- und Klimatechnik, Heizgeräte und dgl. mit einem Trägerelement, in/an welchem mindestens ein Fest- und Bewegungskontaktpaar zur Bildung mindestens einer Schaltkontaktstrecke vorgesehen sind und in/an dem ein thermisch-sensitives Element befestigt ist, dessen thermisch verursachte Bewegung auf das Fest- und Bewegungskontaktpaar übertragbar ist, wobei das thermisch-sensitive Element 12 durch einen entweder beidendseitig oder an sich gegenüberliegenden Bereichen am Trägerelement 2, 32 eingespannten oder einen dieses umspannenden Sensorkörper 13, 43 gebildet wird, dessen Ausdehnungskoeffizient sich von dem des Trägerelementes 2, 32 unterscheidet.