HG30系列熔斷器式隔離器，額定電壓至交流400(380)V，額定電流至50A，適用于有高短路電流的配電電路和電動機電路中，作為電源隔離器并作電路過載和短路保護之用。

本系列隔離器由插座、接線端子、熔斷體、手柄、外殼和卡板等組  成，所有帶電部分均裝在外殼內，不外露。

Series HG30 fuse-disconnector with rate voltage up to a.c. 400V, and  rated current up to 100A is mainly used in the lighting and motor circuits as  the power source isolator and for protection from overload and short-circuits.  This series fuse-disconnector is composed of fuse-link and sockets,  terminals, handle, and case. All live parts are enclosed in the case.