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90degrees C mcb

lyledunn

Does anyone know of a manufacturer of MCBs to BSEN60898 that allows connection at 90C?

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    I am bound to wonder why an MCB for "household and similar installations" would be used in this way. However, BS 60898 devices may be used in an ambient temperature of up to 40 ºC. That said, the reference temperature is 30 ºC and the test conditions are 20 ºC to 25 ºC. Under test, a 60 K temperature rise is permitted at the terminals. The MCBs must withstand a temperature test at 100 ºC.

    Quite how this relates to normal use is a bit obscure, but to my mind, any BS 60898 device should withstand at least 85 ºC at the terminals.

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  • 0

    I am bound to wonder why an MCB for "household and similar installations" would be used in this way. However, BS 60898 devices may be used in an ambient temperature of up to 40 ºC. That said, the reference temperature is 30 ºC and the test conditions are 20 ºC to 25 ºC. Under test, a 60 K temperature rise is permitted at the terminals. The MCBs must withstand a temperature test at 100 ºC.

    Quite how this relates to normal use is a bit obscure, but to my mind, any BS 60898 device should withstand at least 85 ºC at the terminals.

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