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Charging Non-shielded Aluminum Bar

Typical application data:
1) Electrical performance
1.1) Rated voltage:AC750V / DC1000V
1.2) Breakdown voltage:≥AC2500V/50Hz/1min (Leakage Current≤10mA)
1.3) Insulation resistance:>100MΩ (test DC1000V)
1.4) current carrying capacity vs cross-sectional area:
1.4.1) (Ambient temperature: -40℃~125℃)
40A → 6mm² | 150A → 35mm² | 250A → 50mm² | 350A → 70mm²
1.4.2) (Ambient temperature: -40℃~180℃)
40A → 35mm² | 150A → 50mm² | 250A → 70mm² | 350A → 90mm²
1.4.3) (Ambient temperature: -40℃~250℃)
40A → 50mm² | 150A → 70mm² | 250A → 90mm² | 350A → 110mm²

2) Reliability
2.1) Pull-out force:≥3500N (70mm²)
2.2) Ingress Protection Level:≥IP65 (Terminal)

3) Environmental tolerance
3.1) Salt spray test:16h (GB/T 2423.17)
3.2) Flame retardant grade:UL94 V-0。
3.3) normal working temperature: aluminum bar@125℃, Terminal@140℃

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The photo above shows a piece of customized designed aluminum bus bar for an actual EV high-voltage circuit project. The project has been in series production already.

High-voltage charging non-shielded aluminum bus bars and high-voltage charging shielded aluminum bus bars provided by NORTHBRIDGE, is manufactured by proprietary 3D bending, friction welding, ultrasonic welding and diffusion welding process technologies.

High-voltage charging non-shielded aluminum bars and high-voltage charging shielded aluminum bars provided by NORTHBRIDGE, use UL recognized, high voltage and heat resistant insulating materials, which provide superior performance required to meet various industry applications.


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China local experienced R&D team and project management team are able to develop customized high-voltage aluminum bus bar for customer then provide holistic NPI (abbreviation of New Product Introduction) project management service. The maximum size of high-voltage aluminum bus bar provided by NORTHBRIDGE, could reach to 1800mm.


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The high-voltage aluminum bus bar supplier of NORTHBRIDGE has passed the ESG audit, VDA6.3 and IATF16949 certification.


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