Sigma Horizontal Fuse-Switch Disconnectors are electrical circuit protection and control devices that, when used with NH fuses, not only manually open and close the circuit but also safely interrupt the circuit in the event of any short-circuit or overload current.

Sigma Horizontal Fuse-Switch Disconnectors are manufactured in compliance with TS EN 60947-3 standards and CE norms. The housing material consists of a thermoplastic material resistant up to 960 °C, and the current-carrying parts are made of 99.9% pure electrolytic copper.