The MALu switchgear is one of the latest advancements in indoor metal clad air-insulated switchgear technology. It has been designed with operator safety and straightforward, reliable operation and installation, in mind.

Developed in Germany by Minis Systems GMBH the system is manufactured under license by RWW Engineering in South Africa. Thereby, combining the technological excellence of major switchgear component producers with the manufacturing expertise and backup of a local partner, in order to meet local standards and requirements.

Technical Characteristics

Rated voltage 12kV 17.5kV 24kV
Rated power frequency withstand 28kV 38kV 50kV
Rated lightning impulse withstand 75kV 95kV 125kV
Rated short-circuit breaking current (lsc) to 40kA 40kA 25kA
Rated peak withstand current (lp) – 3s/4s to 104kA 104kA 104kA
Internal arc withstand current (AFLR) – 1s to 40kA 40kA 40kA
Rate frequency 50-60Hz 50-60Hz 50-60Hz
Rated busbar current to 3150A 3150A 3150A
Rated incomer/feeder current 630A, 1250A, 1600A, 2000A, 2500A, 3150A 630A, 1250A, 1600A, 2000A, 2500A, 3150A 630A, 1250A, 1600A, 2000A, 2500A, 3150A
Standards IEC62271-100 VDE 0671-200 IEC62271-100 VDE 0671-200 IEC62271-100 VDE 0671-200
Degree of protection IP4X/IPX3 (>1600A) IP4X/IPX3 (>1600A) IP4X/IPX3 (>1600A)
Temperature range -5…+ 40ºC -5…+ 40ºC -5…+ 40ºC
Maximum relative humidity 95% 95% 95%

MALu panels can be equipped with vacuum circuit breakers from various manufacturers, including the following:

  • ABB VD4/P & VSC contactors
  • Siemens SION
  • Tavrida MD1
  • Schneider Electric Easypact EXE
  • Chint
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