Medium Voltage Busbar Trunking
GMT 3.6 - 24kV
Graziadio GMT busbars are prefabricated busbar trunking systems for medium voltage power transmission, available from 800 A up to 6000 A. They are suitable for both indoor and outdoor use with protection ratings of IP42 – IP55 – IP66 – IP67 – IP68. GMT lines can be supplied with either aluminum or 99.9% ETP copper conductors. The standard length of the straight element is 2 m; any custom size can be provided upon request.
Technical Characteristics
- Configurations: 3P+PE
- Dedicated copper PE (Protective Earth) upon request
- Element lengths: 2 m and any custom length
- Insulation types: Fiberglass (Class H – 180°C), PVC (Class Y), Air, Resin
- Live parts not accessible with line in operation
- Protection rating: up to IP42 – IP55 – IP66 – IP67 – IP68
- High resistance to short circuit
- UV resistant
- Suitable for use in tropical environments
- Customized elements available upon request: 90° elbows, elbows greater than 90°, T-junctions, and Z-units.
- Fire barriers with fire resistance up to 120 minutes
- Advantages: corrosion resistance; high reliability junction; high thermal dissipation; light weight; multiple customizations; reusable
Installations
Product Details
- 800-6000 A
- Conductors: Aluminum/Copper
- Compliance with standards: CEI EN50102 and CEI EN60694-2

Main Applications
- Industrial environments
- Oil & Gas
- Naval
- Power plants
- Refineries
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