Medium voltage switchgear BasisBlock MC3

The BasisBlock MC3 is a type-tested, factory-assembled, air-insulated switchgear for interior installation, trible metalclad, casement for bus bar compartment for switchgear compartment for cable connection and field to field separation, available as a permanent fitting and as a withdrawable-unit design.

Available as a single bus bar system or in duplex format.

Stepped system for 3-fold personal safety.
Step 1: Light arc deflector plate
Step 2: Light arc absorber
Step 3: Light arc absorber + diversion canal

Our Medium voltage Switchgear BasisBlock MC3 S is:
  • Metal clad compartmentalisation, air insulated
  • Rated voltage 12 kV and 24 kV, 50/60 Hz
  • Rated current up to 4000 A
  • Rated short-time withstand current up to 40 kA (3 s)
  • Arc fault tested 40 kA (1 s)
  • Type-tested to IEC 62271-200, LSC2B-PM, IAC AFLR
  • For circuit breakers, contactors and load break switches
  • Withdrawable-unit design, with module "Multi-Mechanik"
  • Arc fault tested from compartment to compartment
    (internal arc fault)

Rated value:    
Rated operating voltage 12 kV 24 kV
Rated power frequency withstand voltage 28 kV 50 kV
Rated lightning impulse withstand voltage 75 kV 125 kV
Rated current up to 3400 A up to 2000 A
Rated short-time withstand current 40 kA 25 kA
Rated surge withstand strength 100 kA 65 kA
Rated short-circuit duration 3 s 3 s
Arc fault test 1 s 40 kA 25 kA
Frequency 50 Hz 50/60 Hz
Protection IP 3X IP 3X

Width 800 mm 1000 mm
Depth 1485 mm 1735 mm
Height 2300 mm 2510 mm
Height with electric-arc-deflector 2540 mm 2750 mm
Height with absorber 2800 mm 2870 mm
Height with absorber and exhaust channel 2988 mm 3060 mm

print window

close window


Schematic diagram MC3

Leukhardt Schaltanlagen GmbH - - Internet:
© 2006 Leukhardt Schaltanlagen GmbH