Introduction

Surge Rated Fuses, specifically the SRF series, are designed to protect Transient Voltage Surge Suppression (TVSS) products. The SRF series is designed to withstand 8/20 μs or 10/350 μs lightning surge pulses without operating, allowing the TVSS system to react to the surge. These fuses are intended to be installed in series with the TVSS devices and do not normally carry current, except for the periodic random surges caused by TVSS breakdown during normal operation. Under AC short circuit conditions, these fuses have a high capability for current limitation.