Switchgears

NUCON Transformers are proven as global technology in transformer.

Miniature Circuit Breakers (MCB's)

Electrical Distribution needs are countinuously evolving in residential, commercial and industrial sectors. Improved operational safety, continuity of service, greater convenience and operating cost have asumed a tremendous significance. Miniature adapt to these changing needs. electricity is an inseparable part of our daily life style. Miniature Circuit Breakers are electrical safety devices used for the protection of electrical installations. MCB's protect installations against sustained overload and short circuit.


Conformity To Standards

Conforms to IEC:60898, IS:8828 MCB's
IEC:60947 - 3, IS:13947 - 3 ISOLATORS
IEC:60947 - 3, IS:13947 - 3 MINI CHANGEOVER (MCO)


Range

B' Curve - 6A to 40A
EXECUTION SP,SPN, DP, TP, TPN & FP
'C' Curve - 0.5A to 63A
EXECUTION SP, SPN, DP, TP, TPN & FP


Technical Iinformation

Number of Poles SP, SPN, DP, TP, TPN, & FP, Rated Insulation Voltage (Ui) 690
Rated Short circuit Breaking Capacity 10 KA Rated Frequency (Hz) 50/60
Characteristic B & C Utilization Category AC 23 A
Magnetic Release Settings B (3-5) In Rated impulse withstand Voltage 6 KV
C (6-10) In Protection Class IP 20
Rated Operating Voltage (V) 240/415


Salient Features

  • Entire range i.e. SP, SPN, DP, TP, TPN, from 2 Amps. to 63 Amps. duly ISI marked as per IS 8828.
  • Unique box type terminals with 35 sq mm input and 25 sq mm output cable capacity.
  • Reboundless contact mechanism prevents sparking/erosion of contacts.
  • Superior arc runner based on current-limiting blow-out rapid extinction magnetic system, permits exceptionally low let-through energy.
  • Designed to withstand up to 25 KA short circuit currents.
  • Silver graphite tips for fixed contact, silver plated moving conatct, incoming & outgoing terminals ensure extended life span and prevent contact welds while withstanding higher short circuit breaking levels.
  • Excellent performance as main's switch ensures use in locations close to sub-stations and transformers which induce short circuit current up to 25 KA.
  • Unique self lubricating speacial plastics components.


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