Switch Gear

the power instability in developing countries along with the inefficient rationalized power distribution creates a need for the alternative source of power, to back up the utility supply. This further necessitates the automation, in the distribution system as the rate of power outage & low voltage output becomes predominantly high. Most of the residential & commercial processes are dependent on power supply & if the process of changeover is manual, this will not only create the hindrance in important activities but it may also damage the device or machine from human error during the changeover.
havells accl is a fully automatic high precision micro controller based device having current limiting function providing on both generator supply & mains supply and is ideally suited for proper/efficient utilization of standby generator used in mulch-storied apartments, commercial complexes, etc.

technical specifications
standard conformity : iec 60947-6 /iec 60947-3 / is 13947-3
no. Of poles : 1p+n
rated current (in) : 30a on mains,3-20a on generator
rated voltage (ue) : 240 vac
operational voltage : 80-300vac
restoring time : 10 sec
dielectric strength : 2. 0kv
utilization category : ac 21a (iec 60947-3) / ac 31b (iec 60947-6)
indication : mains, generator, load, overload
ambient temp. : -5 to +55°c
electrical life : 6000 operations
pollution degree : 2
conditional short : 3ka circuit breaking capacity
protection class : ip20
mounting : standard mounting rail (35x7. 5 mm)
mounting position : vertical /horizontal
terminal capacity mm² : 10
weight : 350 gms.

features
• microcontroller based din rail mountable automatic source changeover with neutral isolation
• inbuilt smps for low power consumption
• operational status indication through leds
• manual reset provision for restoring supply, when in sleep mode
• automatic generator on/off facility (on special demand)
• staggered terminal design with bottom wiring for better isolation between phase & neutral

MCB Changeover switch finds wide & varied application in industries as well as in domestic sphere for use in low voltage distribution circuits, wherever continuity of supply is necessary, for switching to an alternate source of supply from main supply and vise-versa.

They are switch disconnectors with independent manual operation, capable of making, carrying and breaking currents under normal circuit conditions, which may include operating overload condition and also carry currents under specified abnormal circuit conditions such as those of short circuit for a specified time.

Range :
25A & 40A

Execution :
Double Pole (2P)
Four Pole (4P)

Specification



Features:
Compact construction
Double break contacts
Silver Cadmium Oxide contact tips
Shrouded terminals
Front operation with three stable positions I-O-II
Centre position off
Easy snap on DIN Rail mounting
Can be mounted with other products viz. MCB, ELCB, Isolator in   Distribution Board

IS 13947 - 3 / IEC 60947 - 3

We bring for our clients a range of switch gear units that are high in performance and are completely safe to use. The different units that are available are:

• Main switch units
• Change over units
• MCB
• MCCB
• ELCB