A wide range of front operated panel mounting main switch disconnector fuse are offered for various power distribution applications. These main switches have high short circuit making and breaking capacity. These can be used for the both AC and DC applications.

Rang : 250Amp-800Amp.
Execution : Triple pole with neutral
Features :
» Available in open and in steel sheet enclosure
» High Quality ETP grade Copper used
» High Quality Silver and Zink Electro Plating for batter conductivity
» Front side open and good space for connection and wiring

Construction
The complete mechanism is enclosed in a gully insulated DMC moulded housing having excellent combination of mechanical and electrical properties. Phase barriers are provided for protection against phase to phase flashover. The switches are designed for base mounting. All steel components are zink plated and current carrying parts are silver plated

Operating Mechanism
Front handle operation makes possible concise and smaller panels. Sturdy operating handle incorporates features such as fool proof cover locking, inter lock with defeat facility, and padlocking for safety locking in OFF condition. Telescopic adjustable handle shaft is provided for maximum flexibility in order to suit varied mounting positions and to make them compatible to the bus bars.

Contacts and Contact Mechanism
The contact system comprises of spring loaded, butt-type Contacts. There are multi fingers (eight per phase) in higher ratings. Due to the multiple figners, each section carries only a fraction of the total current. Also, because of their special alignment, only two per phase are subjected to make-break. Hence, the contact life of the rest of the fingers is high and the switch maintains low energy losses throughout its life.

Due to the double break per pole (one each on incoming & outgoing), the fuses are positively isolated from both the ends in “OFF” position ensuring safety during maintenance. They are particularly advantageous in ring distribution network where the network is fed from both sides.

Enclosers
These switches are normally used in open execution for panel mounting. However, they are also available in enclosures. The enclosures are made of sheet steel which are robustly built, chemically phosphatized and electrostatically powder painted. They are ideally suited for adverse environmental conditions.

SBC Main Switch
SBC Main Switch has been designed and developed to offer solutions sought by discerning customers where ease of installation and operation is required. The switches are compact and available in ratings 250A, 400A, 630A & 800 A with highly sencitive and reliable fuses.