thermal cut-out

clause 3

Clause 3 – How to understand the definition of “protective device”
Byforest January 27, 2025January 27, 2025

The standard emphasizes “abnormal operation” here. Only devices that operate under “abnormal operation” conditions can be defined as protective devices. Therefore, there are many types of protective devices, including overheating protection devices, overcurrent protection devices, and overpressure protection devices. Overheating protection devices include the thermal link, non- self-resetting thermal cut-out, self-resetting thermal cut-out, thermal cut-out,…

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Clause 3 – How to understand the definition of “non-self-resetting thermal cut-out”
Byforest January 10, 2025January 11, 2025

non-self-resetting-thermal cut-out: thermal cut-out that requires a manual operation for resetting, or replacement of a part, in order to restore the current.NOTE Manual operation includes disconnection of the appliance from the supply mains. The thermal cut-out is equipped with a temperature-sensitive component, typically a bimetallic strip or a thermistor, which reacts to heat. As the…

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Clause 3 – How to understand the definition of “thermal link”
Byforest December 30, 2024December 30, 2024

thermal link: thermal cut-out which operates only once and requires partial or complete replacement It is a temperature sensing device, but it can only be operated once, when the temperature is higher than its set value, it will disconnect, and after disconnection, the current can not pass through, so as to play the role of…

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Clause 3 – How to understand the definition of “self-resetting thermal cut-out”
Byforest December 23, 2024January 10, 2025

self-resetting thermal cut-out: thermal cut-out that automatically restores the current after the relevant part of the appliance has cooled down sufficiently In the definition there is a clear mention, when the temperature is cooled to a certain degree, in fact, its intention is to control the temperature is not too high, when the temperature is…

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Clause 3 – How to understand the definition of “thermal cut-out”
Byforest December 23, 2024January 10, 2025

thermal-cut-out: device which during abnormal operation limits the temperature of the controlled part by automatically opening the circuit, or by reducing the current, and is constructed so that its setting cannot be altered by the user. There are three key provisions here. First, the thermal cut-out is a heat-sensing element, second, it can only be…

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