# BR-40 2P Type 2 40kA Surge Protective Device for TNS Systems
## Introduction to Surge Protection
In today’s increasingly electrified world, protecting electrical systems from power surges has become more critical than ever. The BR-40 2P Type 2 40kA Surge Protective Device (SPD) offers robust protection for TNS (Terre-Neutre-Séparé) systems, safeguarding sensitive equipment from damaging voltage spikes.
## Key Features of BR-40 2P SPD
The BR-40 2P Type 2 surge protector stands out with its impressive specifications:
– 40kA maximum discharge current (Imax)
– 20kA nominal discharge current (In)
– Compact 2-pole design
– Specifically designed for TNS earthing systems
– Quick response time (<25ns)
– Visual status indication
## Why Choose Type 2 Protection?
Type 2 SPDs like the BR-40 serve as the primary protection for electrical installations, typically installed at distribution boards. They complement Type 1 devices (installed at service entrances) by providing:
– Secondary surge protection
– Protection against indirect lightning strikes
– Defense against switching transients
– Enhanced equipment longevity
## Installation Considerations
When installing the BR-40 2P in TNS systems, consider:
– Proper coordination with upstream protection devices
– Correct connection to the neutral conductor
– Adequate cable cross-sections
– Compliance with local electrical codes
– Regular maintenance checks
## Technical Specifications
Parameter | Value
System Compatibility | TNS
Rated Voltage | 230/400V AC
Protection Level (Up) | ≤1.5kV
Response Time | <25ns
Operating Temperature | -40°C to +80°C
Mounting | DIN rail (35mm)
## Benefits for TNS Systems
The BR-40 2P offers specific advantages for TNS configurations:
– Optimized neutral conductor protection
– Reduced risk of neutral-to-earth voltage spikes
– Improved system reliability
– Compliance with IEC 61643-11 standards
– Cost-effective surge protection solution
## Maintenance and Monitoring
To ensure optimal performance:
– Regularly check status indicators
– Monitor for any signs of thermal stress
– Replace after significant surge events
– Consider periodic testing by qualified personnel
– Keep records of installation and maintenance
## Conclusion
The BR-40 2P Type 2 40kA Surge Protective Device provides reliable, high-performance protection for TNS electrical systems. Its robust design, high discharge capacity, and system-specific features make it an excellent choice for safeguarding sensitive equipment against damaging power surges in commercial and industrial applications.
