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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




Schematic diagram MC3
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