Sub Distribution Board

The Distribution Board is is a component of an electricity supply system which divides an electrical power feed into subsidiary circuits while providing a protective fuse or CB for each circuit.

FGECO Sub Main Distribution Board serves as a complete solution for the distribution of power and is available up to 630A. The design provides complete flexibility at the time of installation, complying with IEC 61439-1,2.

  • SUB DISTRIBUTION BOARD is used in a variety of sectors such as utilities and co-generation, pharmaceutical factories, generator manufacturers, critical power plants, data centers and in the oil and gas
  • Easy interchangeability of components
  • Wall mounted and free standing designs
  • Available in 2/14 way (3Pole) to 6/42 way (1 Pole) outgoing MCCB’s
  • Bare Copper / tin plated / silver plated / PVC sleeved copper busbars
  • Available in stainless steel enclosures for outdoor applications
  • Neutral and earth busbars can be rated up to 100% of the main busbar
  • Internal separation up to Form-3a
Technical Data


Enclosure Name                                                              FGECO












Electrical Data





Rated voltages

Rated operating voltage Ue Up to 690 V
Rated insulation voltage Ui Up to 800V
Rated impulse withstand voltage Uimp Up to 8 kV
Overvoltage category Up to IV
Material group IIIa
Degree of pollution 3
Rated frequency 50/60 Hz




Rated current


Busbar type

Pure copper bars, with 99.9%conductivity
Rated current for Distribution Busbar In Up to 630 A
Conditional short circuit current Icc 50 kA @ 0.25PF
Rated short-time withstand current Icw 50 kA @ 1 Sec
Rated peak withstand current Ipk 105 kA

Incoming and outgoing

Incoming feeders Up to 630 A
Distribution feeders Up to 250 A

Direct contact protection

Form of separation Up to 3a
Protection against electric shock Yes
Ventilation Normal








Mechanical Characteristics

Recommended depth 225 mm
Skid base height 50 mm
Number of ways Up to 14
External degree of protection IP Up to IP66


Steel components


Sheet metal material

AluZinc steel Electrogalvanized /Stainless Steel
Sheet metal thickness Up to 2 mm

Surface protection

Electrostatic powder coating/ Epoxy
Standard colors RAL7035*

Panel mounting

Wall mounted and free standing
Mechanical impact IK10






Installation environment

Ambient temperature (°C) 40*
Relative humidity max 50% at 40°C
Maximum altitude Up to 2000m*


Busbar system 3 PH, Neutral and PE
Busbar insulating material PVC sleeving
Busbar plating material Bare / tin / silver