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Official UK RepresentativeCast Resin Busbar System
GR Cast Resin is a fully resin-insulated, IP68 busbar trunking system rated 500 A to 6300 A, engineered for humid, saline and corrosive operating environments. Available in aluminium (GR-A, up to 5000 A) and copper (GR-C, up to 6300 A) conductor variants, with welded-free elbow accessories and a bolt-on connection joint.
IP68 cast-resin insulated busbar system developed for humid, saline and demanding operating environments.
| Parameter | 500A | 630A | 800A | 1000A | 1250A | 1600A | 2000A | 2500A | 3200A | 4000A | 5000A |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rated current (In) | 500 A | 630 A | 800 A | 1000 A | 1250 A | 1600 A | 2000 A | 2500 A | 3200 A | 4000 A | 5000 A |
| Insulation voltage (Ui) | 36 kV | 36 kV | 36 kV | 36 kV | 36 kV | 36 kV | 36 kV | 36 kV | 36 kV | 36 kV | 36 kV |
| Phase/Neutral/Earth cross-section (Sf) | 660 mm² | 660 mm² | 660 mm² | 660 mm² | 660 mm² | 780 mm² | 1080 mm² | 1080 mm² | 1560 mm² | 2160 mm² | 2160 mm² |
| Phase short-circuit withstand current, 1s (Icw) | 50 kA | 50 kA | 50 kA | 50 kA | 50 kA | 50 kA | 50 kA | 50 kA | 100 kA | 100 kA | 100 kA |
| Phase peak withstand current (Ipk) | 110 kA | 110 kA | 110 kA | 110 kA | 110 kA | 110 kA | 110 kA | 110 kA | 220 kA | 220 kA | 220 kA |
| Phase resistance (R1) | 0.062 mΩ/m | 0.062 mΩ/m | 0.062 mΩ/m | 0.062 mΩ/m | 0.062 mΩ/m | 0.038 mΩ/m | 0.029 mΩ/m | 0.029 mΩ/m | 0.019 mΩ/m | 0.015 mΩ/m | 0.015 mΩ/m |
| Phase reactance (X1) | 0.015 mΩ/m | 0.015 mΩ/m | 0.015 mΩ/m | 0.015 mΩ/m | 0.015 mΩ/m | 0.030 mΩ/m | 0.014 mΩ/m | 0.014 mΩ/m | 0.015 mΩ/m | 0.007 mΩ/m | 0.007 mΩ/m |
| Phase impedance (Z1) | 0.064 mΩ/m | 0.064 mΩ/m | 0.064 mΩ/m | 0.064 mΩ/m | 0.064 mΩ/m | 0.048 mΩ/m | 0.032 mΩ/m | 0.032 mΩ/m | 0.024 mΩ/m | 0.016 mΩ/m | 0.016 mΩ/m |
| Conductor material | Aluminium (EC Grade) | Aluminium (EC Grade) | Aluminium (EC Grade) | Aluminium (EC Grade) | Aluminium (EC Grade) | Aluminium (EC Grade) | Aluminium (EC Grade) | Aluminium (EC Grade) | Aluminium (EC Grade) | Aluminium (EC Grade) | Aluminium (EC Grade) |
| Protection degree | IP68 | IP68 | IP68 | IP68 | IP68 | IP68 | IP68 | IP68 | IP68 | IP68 | IP68 |
GR-A3 030105–030125 / GR-A5 050105–050125 · GR-C3 030105–030132 / GR-C5 050105–050132 (500–2500 A GR-A / 500–3200 A GR-C)
3000 mm bolt-on busbar element in 3P or 3P+N+Pe configuration, available with aluminium (GR-A) or copper (GR-C) conductors.
GR-A3 030105–030125 / GR-A5 050105–050125 · GR-C3 030105–030132 / GR-C5 050105–050132 (500–2500 A GR-A / 500–3200 A GR-C)
Custom-length bolt-on element; length specified at order, available with aluminium (GR-A) or copper (GR-C) conductors.
GR-A3 TS 05–25 / GR-A5 TS 05–25 · GR-C3 TS 05–32 / GR-C5 TS 05–32 (500–2500 A GR-A / 500–3200 A GR-C)
Bolt-on connection element linking the busbar run directly to a panel or transformer connection.
GR-A3 VE 05–25 / GR-A5 VE 05–25 · GR-C3 VE 05–32 / GR-C5 VE 05–32 (500–2500 A GR-A / 500–3200 A GR-C)
Welded-free 90° direction-change element for vertical plane routing.
GR-A3 HE 05–25 / GR-A5 HE 05–25 · GR-C3 HE 05–32 / GR-C5 HE 05–32 (500–2500 A GR-A / 500–3200 A GR-C)
Welded-free 90° direction-change element for horizontal plane routing.
Full product catalogue covering all Gersan busbar trunking systems, including GR technical data, order codes and dimensional drawings.
PDF · 25.1 MBQuick reference for joining GR cast-resin busbar elements and closing the resin joint covers.
PDFNeed technical information?
Request datasheets, drawings and documentation for your selected busbar system.
Applications
GR Cast Resin delivers corrosion-resistant, IP68 power distribution for humid, saline and demanding industrial environments.
Overhead power distribution for industrial facilities with demanding environmental conditions.
Resin-insulated power distribution for utility plants and other essential-service facilities.
Reliable, high-current power distribution for data centre server halls.
Corrosion-resistant power distribution for coastal and offshore wind and solar generation sites.
Humid- and saline-environment power distribution for ports, airports and transport hubs.
Overhead power distribution for industrial facilities with demanding environmental conditions.
Engineering support
Share your current requirement, installation environment and project stage with our technical team.
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