This Acti9 STI isolatable fuse-carriers is a low voltage fuse-disconnector. It is used for tertiary and industrial applications requiring a high breaking capacity. It has 1P+N pole, up to 25A rated current, and gG or aM fuse curve with a fuse cartridge type of 10.3mm x 38mm. it can be mounted on DIN rail for modular installation. The general purpose fuse (gG fuse) provides overload and short-circuit protection. it has an IP20 degree of protection on its terminals, becoming IP40 once in modular enclosure. A clip-on marker is visible on front face or on downstream terminal to identify fuse presence. An optional 230V neon indicator light indicates fuse blowing. The device is provided with a captive fuse-carrier and an additional housing for a spare fuse. Its toggle can also be padlocked.