Answer / suresh raajaa

SWITCH FUSE UNIT. IT IS USED FOR PROTECTING POWER AND
CONTROL CIRCUIT DEPENDS ON THE CURRENT RATING REQUIRED.

Answer / rajan

It is Switched Fuse Unit. It has one switch unit and one
fuse unit. When we operate the breaker, the contacts will
get close through switch and then the supply will passes
through the fuse unit to the output.

Whereas in Fuse Switch Unit there is no separte switch and
fuse unit. There is only fuse unit which act itself as a
switch. When we operate the fuse unit will close the input
and output of the breaker.

Answer / vinod

switch fuse unit.there are many protective systems like
HRC,MCCB,MCB...

Answer / karthik

SFU(SWITCH FUSE UNIT)-IT HAS BEEN USED TO TRIP THE
CIRCUIT,PARTICULARLY THIS IS USED FOR HIGH CAPACITY TRIPPING
. WHEREAS MCB&MCCB ARE USED FOR LOW CAPACITY TRIPPING

Answer / ayman

Switch Fuse Unit . It is made of power fuse (80,250,400A)
and switch which can be operated from outside using extend
rotary handle to rotate the shaft which is inside it .

Answer / senindra123

SFU-switch fuse unit. its a fuse unit which can be connet
and disconnect manually with power using a handle.

Answer / sunil kumar rout

sfu -switch fuse unit
it has combination of hrc fuse and a switch unit with different ratting.
when any short ckt hrc fuse is blown and its control ckt and power contactor trip with help of bmr,earth fault relay,ct operated relay,or any type of digital rlay. but in some cases switch unit not trip
it is a old model.
now a days mccb used.

Answer / akhand sharma

Switch fuse unit is a complet unit of controling the power in PCC and MCC panel.. this type of switch using the one of the bigest reson is safety when we work on ground level we can logout or tagout with this switch easily to work...in this unit not only switch it become some of no switch is also connect to control the PCC and MCC panel....at working time......

Answer / vinay

SFU (SWITCH FUSE UNIT) IS USED AS A BASE FOR FUSES IN WHICH
FUSES ARE FIXED IN ELECTRICAL PANELS.

Answer / d r nagar

It is used to protect electrical or electronic devices and
control circuit depending on the current rating.

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