# Lightning Protection BR-40 2P Type 2 40kA Surge Protective Device for TNS Systems
## Introduction to Surge Protection
In today’s world, where electrical systems are becoming increasingly complex and sensitive, protecting them from power surges is more important than ever. The BR-40 2P Type 2 40kA Surge Protective Device (SPD) offers robust protection for TNS (Terra Neutral Separate) systems, ensuring your electrical infrastructure remains safe from damaging voltage spikes.
## Key Features of BR-40 2P SPD
The BR-40 2P Type 2 SPD is designed with several important features that make it stand out in surge protection:
– 40kA maximum discharge current capacity
– Type 2 classification according to IEC 61643-11
– Specifically designed for TNS earthing systems
– Compact and easy-to-install design
– Visual status indication for quick monitoring
– Thermal disconnection for enhanced safety
## Understanding TNS Systems
TNS (Terra Neutral Separate) is one of the most common earthing systems used in electrical installations. In this configuration:
– The neutral and protective earth conductors are separate throughout the system
– The neutral is connected to earth at the source (transformer)
– The protective earth conductor is connected to earth at multiple points
The BR-40 2P SPD is specifically engineered to work optimally with this type of earthing arrangement, providing superior surge protection.
## Technical Specifications
Parameter | Value
Type | Type 2
Maximum Continuous Operating Voltage (Uc) | 275V AC
Nominal Discharge Current (In) | 20kA (8/20μs)
Maximum Discharge Current (Imax) | 40kA (8/20μs)
Voltage Protection Level (Up) | ≤1.5kV
Response Time | <25ns
Operating Temperature Range | -40°C to +80°C
## Installation Guidelines
Proper installation is crucial for optimal performance of your BR-40 2P SPD:
– Install as close as possible to the equipment being protected
– Ensure proper connection to the TNS earthing system
– Follow all local electrical codes and regulations
– Use appropriate cable sizes for connections
– Mount in a dry, well-ventilated location
– Regularly inspect and maintain the device
## Benefits of Using BR-40 2P SPD
Choosing the BR-40 2P Type 2 40kA SPD for your TNS system offers numerous advantages:
– Enhanced protection for sensitive electronic equipment
– Reduced downtime due to electrical surges
– Compliance with international safety standards
– Long service life with reliable performance
– Cost-effective solution for surge protection
– Easy integration into existing electrical systems
## Maintenance and Monitoring
To ensure continued protection:
– Regularly check the status indicator (green = OK, red = replace)
– Perform annual inspections by qualified personnel
– Keep records of installation and maintenance
– Replace the device after a major surge event
– Clean the unit periodically to prevent dust accumulation
## Conclusion
The BR-40 2P Type 2 40kA Surge Protective Device is an essential component for protecting TNS electrical systems against damaging power surges. With its high discharge capacity, fast response time, and reliable performance, it provides peace of mind for facility managers and electrical engineers alike. By investing in proper surge protection, you safeguard your equipment, reduce maintenance costs, and ensure uninterrupted operation of your electrical systems.
