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Polyswitches / PTC Fuses
Polyswitches and PTC fuses are self-resetting fuses, operating as polymer thermistors. At high currents the fuse heats up and develops high impedance, reverting to low impedance as soon as it cools down. Due to the low impedance they offer low power dissipation. Their great advantage over traditional fuses is their reusability. Our shop carries a vast range of poly switches and PTC fuses. Manufacturer of the fuses is, for example, BEL Fuse. The fuses are of varying design and can be suited for surface mounting or through hole mounting. Maxmimum operating voltages vary from six to 72 volts. Nominal operating current ranges from 0.05 to three ampere.