V2EX thermal cutoff

Thermal Cutoff

Definition / 定义

thermal cutoff热熔断器 / 热保护断路装置。一种温度保护元件,当设备温度超过设定阈值时会切断电路以防过热、起火或损坏。常见于电吹风、咖啡机、电热水壶、变压器、电机、电池包等。(有的为一次性熔断,有的可复位,具体取决于型号与设计。)

Pronunciation / 发音

/θml ktf/

Examples / 例句

The thermal cutoff stopped the heater when it got too hot.
热熔断器在加热器温度过高时切断了电源。

If the fan fails, the thermal cutoff can prevent overheating by interrupting the circuit before the insulation breaks down.
如果风扇故障,热保护断路装置可以在绝缘材料劣化之前中断电路,从而防止过热。

Etymology / 词源

thermal 来自希腊语 thermē(“热”)相关词根,表示“与热有关的”。cutoffcut(切断)+ off(离开、断开)构成,字面义是“切断”。合起来 thermal cutoff 就是“由温度触发的切断装置/机制”,属于工程与安全领域的常用术语。

Related ords / 相关词

Literary Works / 文学作品

由于 thermal cutoff 属于偏工程的技术术语,更常见于说明书、标准与工程书籍中;在以下英文技术经典与教材类作品中常可见到类似用法或相关章节(如热保护、熔断器、过温保护):

  • The Art of Electronics(Horowitz & Hill)
  • Practical Electronics for Inventors(Paul Scherz & Simon Monk)
  • Electric Machinery Fundamentals(Stephen J. Chapman)
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