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BR-20 1+1 Type 2 20kA Surge Protective Device for TT and TNS Systems
In today’s electrical infrastructure, protecting sensitive equipment from power surges is crucial. The BR-20 1+1 Type 2 20kA Surge Protective Device (SPD) is designed to safeguard electrical installations in both TT and TNS systems, ensuring reliable operation and longevity of connected devices.
Key Features of the BR-20 1+1 SPD
The BR-20 1+1 Type 2 SPD offers several advanced features that make it an ideal choice for surge protection:
- 20kA discharge capacity per pole (Imax)
- 1+1 protection mode for enhanced safety
- Compatible with both TT and TNS earthing systems
- Compact and easy-to-install design
- Visual status indication for quick monitoring
- Thermal disconnector for fail-safe operation
Applications in TT and TNS Systems
The BR-20 SPD is particularly effective in:
TT Systems: Where the neutral and protective earth are separate, the BR-20 provides essential protection between live conductors and earth.
TNS Systems: In systems with separate neutral and earth conductors, the SPD offers comprehensive protection against transient overvoltages.
Installation Considerations
When installing the BR-20 SPD:
- Mount close to the equipment being protected
- Ensure proper earthing connections
- Follow local electrical codes and regulations
- Consider using upstream Type 1 SPD for additional protection in areas with high lightning risk
Technical Specifications
| Parameter | Value |
|---|---|
| Nominal Voltage (Un) | 230/400V AC |
| Maximum Continuous Operating Voltage (Uc) | 275/320V AC |
| Nominal Discharge Current (In) | 10kA (8/20μs) |
| Maximum Discharge Current (Imax) | 20kA (8/20μs) |
| Voltage Protection Level (Up) | ≤1.5kV |
The BR-20 1+1 Type 2 20kA Surge Protective Device represents an optimal solution for protecting electrical installations in various environments, offering robust performance and peace of mind against damaging power surges.
