STC-DRS Series DIN Rail Surge Protection Device is a single pair surge protection module featuring three stage hybrid technology. Gas tubes and silicon avalanche components protect equipment from overvoltage transients, while sneak currents are mitigated with resettable fuses (PTCs). These fuses are designed to increase resistance by several orders of magnitude when an over-current exceeds safe levels, automatically resuming normal operation when the over-current is removed.
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