Tamura/NEC SF metāla korpuss 15A Temperatūras drošinātājs

AUPO darbības princips / Tamura / NEC SF siltuma drošinātājs ir balstīts uz materiāla siltuma izplešanos un vadošajām īpašībām. Kad temperatūra ķēdē paaugstinās līdz drošinātāja nominālajai sprūda temperatūrai, drošinātāja metāla materiāls karstuma ietekmē paplašināsies. Kad šī izplešanās sasniedz noteiktu pakāpi, tas izraisīs strauju pretestības pieaugumu drošinātāja iekšpusē. The increase in resistance will cause the fuse to heat up rapidly, further accelerating the expansion of the metal material. When the expansion reaches a certain degree, the fuse will disconnect in the circuit, thereby protecting the circuit and equipment from damage due to overheating.

Under normal circumstances, when the current passes through the thermal fuse, the fuse will maintain a low resistance state and will not affect the circuit.

When overheating occurs in the circuit, the thermal fuse begins to work. Its metal material expands due to heat, causing the resistance inside the fuse to change.

As the resistance rises, the fuse temperature rises further, accelerating the expansion of the metal material.

When the metal material expands to a certain extent, the resistance inside the fuse will rise sharply, causing the current in the circuit to be cut off.

After the fuse is disconnected, a new fuse needs to be replaced to restore the normal operation of the circuit. This is because it is difficult for the metal material to return to its original state after expansion, so that the resistance always remains high.

2. Structural features
Thermal fuse is a temperature sensing circuit cutting device with the characteristic of one-time fusing, tas ir, it only acts once at the fusing temperature and cannot be used again. Common types of thermal fuses include organic thermal fuses and alloy thermal fuses.

Taking the organic thermal fuse as an example, its structural features mainly include components such as temperature sensing block, compression spring and star spring. When the temperature around the organic thermal fuse rises to its operating temperature, the temperature sensing block will melt, and the compression spring will relax to make room, so that the star spring is pushed away to contact the pin, thereby disconnecting the current path. Tādā veidā, the circuit will be permanently cut off.

Product Features of Thermal Fuse
SEFUSE temperature fuse installation precautions:
1. Lietojot svina liekšanu, tai jābūt saliektai no daļas vairāk nekā 6 mm no saknes; Liekot, nesabojāt saknes un vadus, un nevelciet, nospiediet, vai piespiedu kārtā pagrieziet vadus.
2. Kad siltuma drošinātājs ir piestiprināts ar skrūvēm, kniedēšanas vai iesiešanas stabi, tai jāspēj novērst mehānisku šļūde un sliktu kontaktu.
3. Savienojošajām daļām jāspēj droši darboties elektriskā izstrādājuma darbības diapazonā, neizkustoties vibrācijas un trieciena dēļ..
4. Metinot svina vadu, apkures mitrums jāierobežo līdz minimumam, un termiskajam drošinātājam nevajadzētu pielietot augstu temperatūru; Nevelciet ar spēku, nospiediet, or twist the thermal fuses and leads; after soldering, cool down immediately for more than 30 sekundes.
5. Termisko drošinātāju var izmantot tikai norādītā nominālā sprieguma apstākļos, strāva un norādītā temperatūra. Pay particular attention to the maximum continuous temperature that the thermal fuse can withstand.
Atzīmēt: Nominālā strāva, lead length and temperature can be designed according to customer requirements.

LE series Thermal Fuse (15Izšķirt)

Produkta īpašības

Using temperature fuse metal casing and sense temperature organic particles.
Pieder neatjaunojama tipa termo drošinātāji. Izkust temperatūras drošinātājs, pat ja apkārtējā temperatūra pazeminās, tas netiks ieslēgts.
Nav svina (Pb) and cadmium (Cd), un atbilst RoHS prasībām.
REACH nesatur norādīto 46 kategorijas SVHC (SVHC).

Product Size

250V 15A Temperature fuse