Main Switchboard

Download catalogue
* Modular structure can be extended.
* Divide between compartments in the cabinet and the module with the metal plate.
* Glossary natural ventilation or forced to commit suicide compensation.
* Access panel : The door panels can either lift to reach in front or behind.
* All metal surfaces are clean grease and dirt by chemicals ( acids ) and water several times before painting and final treatment with phosphate and fixatives to protect against corrosion, stable to ensure that high adhesion.These parts are painted with powder coating at temperatures 200 ° C for 10 minutes to ensure the hardness of the paint surface.
* Form Form 1 to form 4b
* Degree of protection IP32 to IP 54
* Ambient temperature from -50 ° C up to + 40 ° C (average of 24 hours must not exceed + 40 ° C)
* Altitude Up to 2000m
* Relative Humidity Maximum temperature. +40 ° C, ≤ 50%
Nhiệt độ. + 20°C;  ≤ 95 %

Reference standard

IEC 61439-1/2

Class of protection

IEC 60529


In House

Rated isolation voltage (Ui)


Rated operating voltage (Ue)

415/690 V AC

Rated frequency (F)

50 / 60 Hz

Rated impulse voltage  (Uimp)

8 kV

Rated auxiliary circuit voltage

230 V AC max

Degree of pollution


Rated current (In)

4000 A

Electric current vertical busbar

4000 A

Rated short-time current (ICW) 3s

Horizontal busbar

65 kA rms

Vertical busbar

65 kA rms

Rated peak current

143 kA

Earthing diagram


Current limit of power incoming and outcoming feeders

4000 A

Power limit of motor control feeders

Up to 250 kW 415/690 V

Height (H)
Width (W)
Depth (D)
Download Catalogue MSB on here ........