STI 3P+N 400V Fuse Switch Disconnector

This Acti9 STI insulating fuse holder is a low-voltage fuse disconnector. It is used for commercial and industrial applications requiring a high breaking capacity. It features a 3P+N pole, supports up to a nominal current of 10A, and accommodates a gG or aM fuse curve with an 8.5mm x 31.5mm fuse cartridge type. It can be mounted on a DIN rail for modular installation. The general-purpose fuse (gG fuse) provides protection against overload and short circuits. The aM fuse for motor applications provides short-circuit protection (protection for loads with high peak current). It has an IP20 protection rating at its terminals, becoming IP40 once installed in a modular enclosure. A snap-on marker is visible on the front face or the downstream terminal to identify the presence of the fuse. The optional 230V neon indicator light shows that the fuse has blown (off during normal operation and lights up red after the fuse blows). The device is supplied with a captive fuse holder and an additional cover for a spare fuse. Its lever can also be locked.