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Inrush Current Limiting Thermistors

AmethermRhopoint Components Limited are authorised distributors for Ametherm; manufacturer of Inrush Current Limiting thermistors, circuit protection devices and NTC thermistors for temperature correction and measurement.



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  1. AS Series Low Power Inrush Current Limiting thermistors

    AS Series Low Power Inrush Current Limiting thermistors

    The Ametherm AS series of Inrush Current Limiting (ICL) thermistor dissipates between 25% to 43% less power than standard inrush current limiters with the same current and resistance ratings.  This means that these ICL thermistors run cooler at Imax compared to conventional ICL thermistors, which in turn increases their longevity.

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  2. MCL20 Series PTC Thermistor

    MCL20 Series PTC Thermistor

    The Ametherm MCL20 500100-A PTC thermistor can withstand hundreds of hits of maximum inrush current without degrading. This device offers a short reset time, and as a PTC thermistor a quick reset will not result in a large inrush current, as its resistance is already at a high state. The result is extremely high reliability and stability in high-voltage applications.

    With a 19 mm diameter, 9 mm maximum profile, and 7.8 mm lead spacing, the MCL20 500100-A provides designers with a more compact and cost-effective alternative to combining a power resistor, relay, and timer on one circuit to achieve the same functionality.

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  3. MS Series MegaSurge Inrush Current Limiting thermistors

    MS Series MegaSurge Inrush Current Limiting thermistors

    The Ametherm Megasurge (MS) range of  inrush current limiters are suitable for use in very high power applications.  Surge currents that occur when electrical circuits are switched on can cause serious damage to sensitive electronic components if their rated current values are exceeded.  These surge currents can be controlled and limited using the MegaSurge inrush limiters.

     Features

    • High surge energy suppression up to 900J
    • Steady state current (Imax) to 50A.
    • Working voltage to 680Vac.
    • Limit current inrush to electric motors and PSUs
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  4. SG Series Inrush Current Limiting Thermistors

    SG Series Inrush Current Limiting Thermistors

    The Surge Gard Inrush Current Limiting thermistor, manufactured by Ametherm,  is a high power NTC thermistor which is connected in series with the load.

    Surge currents which occur when electrical circuits are switched on can cause serious damage to sensitive electronic components which may exceed their rated values unless the surge is controlled. Damaging surges may be prevented by using Surge-Gard inrush current limiters.

    • High hot to cold resistance ratio
    • 30 types of stocked Inrush Current Limiting (ICL) thermistor
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  5. SL Series Inrush Current Limiting thermistors

    SL Series Inrush Current Limiting thermistors

    The Ametherm SL series of inrush current limiting thermistors suppresses surge currents that occur when electrical circuits are switched on, preventing serious damage to sensitive electronic components if their rated current values are exceeded.  These damaging surge currents can be prevented by placing athe Ametherm Inrush Current Limiting (ICL) thermistor in series with the load, thereby protecting critical parts of the circuit.

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