Thermal delay switch

Thermal delay switch
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  • $US9.00

    Standard Telephone and Cable
    International Telephone & Telegraph

    Top quality miniature glass thermal delay tubes manufactured for the British military in England by renowned International Telephone and Telegraph (ITT). The heater takes a defined time to heat a bi-metallic strip and make contact; used to delay application of HT voltages until tube heaters are at correct temperatures. Tubes are marked in blue ITT VLS631... Top quality miniature glass thermal delay tubes...

    In Stock
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