Thermal fuses in radial design

Discover Alpha therm’s radial thermal cutoffs, with rated functional temperatures ranging from 76°C to 230°C. Featuring insulated connections, plastic or ceramic housings, and the option for tape and reel packaging, these thermal cutoffs come in pre-assembled or custom configurations with bendable lead wires to meet your needs.

  • F Series

    Rated Functioning Temp. (Tf): 76 – 160°C
    Rated Current (Ir): 1 A | 3A
    Rated Voltage (Ur): AC 250V | DC 60V

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  • K Series

    Rated Functioning Temp. (Tf): 76 – 221°C
    Rated Current (Ir): 2 A | 4A
    Rated Voltage (Ur): AC 250V | DC 60V

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  • KG Series

    Rated Functioning Temp. (Tf): 76 – 221°C
    Rated Current (Ir): 2 A
    Rated Voltage (Ur): AC 250V | DC 60V

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  • KM Series

    Rated Functioning Temp. (Tf): 130 – 150°C
    Rated Current (Ir): 2A
    Rated Voltage (Ur): AC 300V

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  • X Series

    Rated Functioning Temp. (Tf): 76 – 221°C
    Rated Current (Ir): 3A | 4A
    Rated Voltage (Ur): 250VAC | 60VDC

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  • XG Series

    Rated Functioning Temp. (Tf): 76 – 221°C
    Rated Current (Ir): 3A
    Rated Voltage (Ur): AC 250V | DC 60V

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  • XM series

    Rated Functioning Temp. (Tf): 130 – 150°C
    Rated Current (Ir): 3A
    Rated Voltage (Ur): 300VAC

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  • Y Series

    Rated Functioning Temp. (Tf): 76 – 187°C
    Rated Current (Ir): 5A
    Rated Voltage (Ur): AC 250V | AC 300V

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  • YM series

    Rated Functioning Temp. (Tf): 130 – 150°C
    Rated Current (Ir): 5A
    Rated Voltage (Ur): AC 300V

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  • S Series

    Rated Functioning Temp. (Tf): 102 – 150°C
    Rated Current (Ir): 10A
    Rated Voltage (Ur): AC 250V

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  • SD Series

    Rated Functioning Temp. (Tf): 102 – 150°C
    Rated Current (Ir): 10A
    Rated Voltage (Ur): 125VDC

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  • SK series

    Rated Functioning Temp. (Tf): 102 – 221°C
    Rated Current (Ir): 10A
    Rated Voltage (Ur): AC 250V

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  • SKL series

    Rated Functioning Temp. (Tf): 200 – 230°C
    Rated Current (Ir): 10A
    Rated Voltage (Ur): AC 250V

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  • SM Series

    Rated Functioning Temp. (Tf): 102 – 150°C
    Rated Current (Ir): 10A
    Rated Voltage (Ur): AC 300V

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  • SY series

    Rated Functioning Temp. (Tf): 95 – 145°C
    Rated Current (Ir): 10A
    Rated Voltage (Ur): AC 250V

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  • T series

    Rated Functioning Temp. (Tf): 102 – 150°C
    Rated Current (Ir): 15A/16A
    Rated Voltage (Ur): 250VAC

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  • TM Series

    Rated Functioning Temp. (Tf): 102 – 150°C
    Rated Current (Ir): 15A/16A
    Rated Voltage (Ur): AC 300V

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  • TY series

    Rated Functioning Temp. (Tf): 95 – 145°C
    Rated Current (Ir): 15A/16A
    Rated Voltage (Ur): AC 250V

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  • TD Series

    Rated Functioning Temp. (Tf): 102 – 150°C
    Rated Current (Ir): 15A/16A
    Rated Voltage (Ur): DC 125V

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  • TK series

    Rated Functioning Temp. (Tf): 102 – 221°C
    Rated Current (Ir): 15A/16A
    Rated Voltage (Ur): AC 250V

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  • P Series

    Rated Functioning Temp. (Tf): 102 – 136°C
    Rated Current (Ir): 20A
    Rated Voltage (Ur): AC 250V | AC 400V | AC 300V | DC 120V

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  • PD series

    Rated Functioning Temp. (Tf): 102 – 150°C
    Rated Current (Ir): 20A
    Rated Voltage (Ur): DC 125V

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  • Q series

    Rated Functioning Temp. (Tf): 102 – 136°C
    Rated Current (Ir): 25A
    Rated Voltage (Ur): AC 250V | AC 400V | AC 300V | DC 120V

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  • QD series

    Rated Functioning Temp. (Tf): 102 – 150°C
    Rated Current (Ir): 25A
    Rated Voltage (Ur): DC 125V

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  • G Series

    Rated Functioning Temp. (Tf): 102 – 150°C
    Rated Current (Ir): 40A
    Rated Voltage (Ur): AC 250V

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  • A-1A-F series

    Rated Functioning Temp. (Tf): 84 – 160°C
    Rated Current (Ir): 1 A
    Rated Voltage (Ur): 250VAC

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  • A-F series

    Rated Functioning Temp. (Tf): 84 – 160°C
    Rated Current (Ir): 2 A
    Rated Voltage (Ur): 250VAC

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  • A-3A-F series

    Rated Functioning Temp. (Tf): 84 – 160°C
    Rated Current (Ir): 3 A
    Rated Voltage (Ur): 250VAC

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  • A-5A-F series

    Rated Functioning Temp. (Tf): 84 – 160°C
    Rated Current (Ir): 5 A
    Rated Voltage (Ur): 250VAC

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