VBMC Metal Clad Switchgear

VBMC Metal Clad Switchgear

VBMC Air-Insulated, Metal Compartmented, Trolley-Mounted Modular Metal Clad Switchgear bring a new dimension to medium voltage distribution systems with their high-performance and type-tested structures. With Siemens Sion series circuit breakers, they ensure network continuity, personnel, and equipment safety while providing high protection against moisture and dust. Our Metal Clad Switchgear offer long-term high-performance guarantees through the collaboration between Siemens and Voltberg.

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Technical Specifications VBMC 12 VBMC 24 VBMC 36
Rated voltage (rms) kV 12 24 36
Power frequency withstand voltage 50 Hz,
1 mi (rms) between phases and phase ground
kV 32 50 70
Lightning impulse withstand voltage 1.2/50 ms
(peak) between phases and phase – ground
kV 75/85 125 170
Rated frequency Hz 50-60
Rated (rms) current Busbars A 630 .. 3150 630 .. 3150 630 .. 2500
(with forced ventilation) A 4000
CB & Disconnector A 630 .. 3150 630 .. 3150 630 .. 2500
(with forced ventilation) A 4000
Load Break Switch A 630 .. 1250 630 .. 1250 630 .. 1250
Vacuum Contactor A 400 800
(for capacitive load) A 250 200
Rated short time withstand (rms) current CB & Disconnector kA 16 .. 40 16 .. 31.5 16 .. 31.5
Load Break Switch kA 16 .. 20 16 .. 20 16 .. 20
Vacuum Contactor kA 8 8
Short circuit withstand time s 3 3 3
Rated short time withstand (peak) current CB & Disconnector kA 40 .. 100 40 .. 100 40 .. 80
Load Break Switch kA 40 .. 50 40 .. 50 40 .. 50
Vacuum Contactor kA 20 20
Internal arc fault Current kA 40 31,5 31,5
Duration s 1 1 1
Earthing switch Rated short time withstand current kA 16 .. 40 16 .. 31.5 16 .. 31.5
Short circuit withstand time s 3 3 3