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BR-20 2P Type 2 20kA Surge Protective Device for TNS Systems

Electrical systems are constantly exposed to transient overvoltages caused by lightning strikes, switching operations, or other electrical disturbances. To safeguard sensitive equipment and ensure uninterrupted operation, surge protective devices (SPDs) play a crucial role. The BR-20 2P Type 2 20kA Surge Protective Device is specifically designed for TNS (Terrestrial Neutral System) configurations, offering reliable protection against electrical surges.

Key Features of the BR-20 2P Type 2 SPD

The BR-20 2P Type 2 SPD is engineered to provide robust surge protection with the following features:

• 20kA Maximum Discharge Current (Imax) – Capable of handling high-energy surges.
• Type 2 Classification – Designed for installation at distribution boards to protect against indirect lightning strikes and switching transients.
• 2-Pole Configuration – Suitable for single-phase TNS systems, protecting both Line and Neutral conductors.
• Thermal Disconnector – Ensures safe disconnection in case of SPD failure.
• Visual Status Indicator – Allows for easy monitoring of the device’s operational status.

Why Choose the BR-20 for TNS Systems?

TNS systems, where the neutral is directly earthed at the transformer and separate earth conductors are used, require specialized surge protection. The BR-20 2P Type 2 SPD is optimized for this configuration, ensuring:

• Compatibility – Seamless integration with TNS electrical setups.
• Enhanced Safety – Prevents damage to connected devices by diverting surge currents safely to earth.
• Compliance with Standards – Meets international standards such as IEC 61643-11 for surge protective devices.

Installation and Maintenance

Installing the BR-20 2P Type 2 SPD is straightforward, but it should always be performed by a qualified electrician. Key installation tips include:

• Mount the SPD close to the distribution board for optimal protection.
• Ensure proper earthing connections to facilitate surge dissipation.
• Regularly inspect the status indicator to confirm the device is functional.

For long-term reliability, periodic testing and replacement (if necessary) are recommended, especially after significant surge events.

Conclusion

The BR-20 2P Type 2 20kA Surge Protective Device is an essential component for protecting TNS electrical systems from damaging surges. With its high discharge capacity, robust design, and compliance with industry standards, it ensures the safety and longevity of connected equipment. Investing in quality surge protection like the BR-20 helps prevent costly downtime and equipment failures.