DMSD Series Low-voltage Fuse Switch Disconnectors

Overview

Disconnecting fuse switch-Modular type for Al and Cu strands. The number and design of the elements can be chosen according to the following numbering system.

Material

Glass fibre reinforced polyamide aluminium-alloy copper,tinned steels,hot-dip galvanized.

The number of disconnecting elements needed can be chosen specifically to the customer 's requirements. For this purpose, there are the corresponding connecting links.To describe the variations which are available the numbering sytem is shown below.

Low-voltage Fuse Switch Disconnectors

Damai's fuse switch disconnectors provide safe controlled disconnection of electrical power to individual users and power units in combination with shortcircuit devices, that allows safe maintenance intervention by protecting against short circuit and earth current leakage.

The fuse switch disconnectors consist of a glass-fibre reinforced plastic housing and a detachable switch flap containing the fuses. The base body carries the connecting terminals that link the fuse contacts.

Arc-suppressing chambers above the fuse contacts limit and quench the power arc that may occur during switching, preventing thermal overload of the fuse switch connector. Both aluminium and copper conductors can be connected to the disconnector.

The switch flaps are equipped with fuse holders suitable for NH fuse inserts, disconnecting links or short-circuit devices.

Modular Design

Damai also offers fuse switch disconnectors in compact design(3 phases + neutral conductor in one housing) in addition to modular designs. These provide users with multiple phase options,including an additional neutral conductor, and offer the opportunity to switch individual phases or all phases simultaneously.

The two types of the fuse switch disconnector are available for different NH fuses:

FSD-00: Suitable for NT Fuse Size 00 (max.160A), with disconnecting blades rated for no more than 250A.

Cross-Section of Disconnector Chamber

FSD-1-2: Suitable for NT Fuse Size 1 (max. 250 A), Size 2 (max. 400 A), with disconnecting blades rated up to 630 A.

Both sizes offer various connection options, are completely weatherproof and offer touch- safe protection for wildlife. A mechanical and electrical fuse indicator option that shows if fuses are mounted and ready for use can be specified.

Damai offers a full range of adapters for different types of operating systems, including optional accessories available on request.