Tamura/NEC SF carcasa metálica 15A Fusible de temperatura

El principio de funcionamiento de la AUPO. / tamura / El fusible térmico NEC SF se basa en la expansión térmica y las propiedades conductoras del material.. Cuando la temperatura en el circuito aumenta a la temperatura nominal de disparo del fusible, El material metálico del fusible se expandirá debido al calor.. Cuando esta expansión alcanza un cierto grado, Hará que la resistencia dentro del fusible aumente bruscamente.. 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.

En circunstancias normales, 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, eso es, 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. De este modo, the circuit will be permanently cut off.

Product Features of Thermal Fuse
SEFUSE temperature fuse installation precautions:
1. Cuando se utiliza doblar plomo, debe doblarse desde una parte más de 6 mm desde la raíz; Al doblar, no dañe las raíces y los cables, y no tirar, prensa, o retuerza los cables con fuerza.
2. Cuando el fusible térmico se fija mediante tornillos, postes de remachado o encuadernación, Debería poder evitar la fluencia mecánica y el mal contacto..
3. Las piezas de conexión deben poder funcionar de manera confiable dentro del rango de trabajo del producto eléctrico sin desplazamiento debido a vibraciones y golpes..
4. Al soldar el cable, La humedad de calefacción debe limitarse al mínimo., Y no se debe aplicar alta temperatura al fusible térmico.; No tire con fuerza, prensa, or twist the thermal fuses and leads; after soldering, cool down immediately for more than 30 artículos de segunda clase.
5. El fusible térmico solo se puede utilizar bajo las condiciones de la tensión nominal especificada., temperatura actual y especificada. Pay particular attention to the maximum continuous temperature that the thermal fuse can withstand.
Nota: Corriente nominal, lead length and temperature can be designed according to customer requirements.

LE series Thermal Fuse (15A)

Características del producto

Using temperature fuse metal casing and sense temperature organic particles.
Fusibles térmicos de tipo irrecuperable. Fusible de temperatura derritiéndose, incluso si la temperatura ambiente cae, no se encenderá.
Sin pista (Pb) y cadmio (Cd), y cumplir con RoHS.
REACH no contiene lo especificado 46 categorías SVHC (SEP).

Product Size

250V 15A Temperature fuse