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
» 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
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
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.
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
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.