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Medium voltage switchgear BasisBlock MC1

The BasisBlock MC1 is a type-tested, factory-assembled, air-insulated switchgear for interior installation, metal enclosed with 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.

Our Medium voltage Switchgear BasisBlock MC1 is:

  • Metal enclosed, air insulated
  • Rated voltage up to 24 kV, 50/60 Hz
  • Rated current up to 1250 A
  • Rated short-time withstand current up to 25 kA (1 s)
  • Arc fault tested up to 25 kA (1 s)
  • Type-tested to IEC 62271-200, LSC2A-PI, IAC AFL
  • For circuit breakers, contactors
  • Permanent fitting or withdrawable-unit design

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 1250 A up to 1250 A
Rated short-time withstand current 25 kA 20 kA
Rated surge withstand strength 65 kA 52 kA
Rated short-circuit duration 1 s 1 s
Arc fault test 1 s 25 kA 20 kA
Frequency 50/60 Hz 50/60 Hz
Protection IP 3X IP 3X

Width 600/650/800 mm 800 mm
Depth 1035 mm 1185 mm
Height 2200 mm 2200 mm
Side wall 40 mm 40 mm
Height with electric-arc-deflector 2340 mm 2340 mm
Required ceiling hight 2840 mm 2840 mm




Schematic diagram MC1
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