# BR-40 4P Type 2 40kA Surge Protective Device for TNS Systems
## Introduction to Surge Protection in TNS Systems
The BR-40 4P Type 2 40kA Surge Protective Device (SPD) is specifically designed to protect electrical installations in TNS (Terre-Neutre-Séparé) systems against transient overvoltages. These systems, commonly used in European electrical distribution networks, require specialized protection to maintain equipment safety and operational continuity.
## Key Features of the BR-40 SPD
This high-performance surge protector offers several important features:
– 40kA maximum discharge current (Imax)
– Type 2 classification according to IEC 61643-11
– 4-pole design for comprehensive protection
– Specifically engineered for TNS earthing systems
– Compact and modular design for easy installation
## Technical Specifications
The BR-40 SPD boasts impressive technical characteristics:
Parameter | Value
Nominal Voltage (Un) | 230/400V AC
Maximum Continuous Operating Voltage (Uc) | 320V AC
Voltage Protection Level (Up) | ≤1.5kV
Response Time | <25ns
Operating Temperature Range | -40°C to +80°C
## Installation and Application
The BR-40 is designed for straightforward installation in distribution boards. Its 4-pole configuration provides complete protection for all live conductors in a TNS system:
– Phase-to-neutral protection
– Neutral-to-earth protection
– Phase-to-earth protection
– Comprehensive system-wide coverage
## Benefits for Electrical Systems
Implementing the BR-40 SPD in your TNS system offers multiple advantages:
– Enhanced protection for sensitive electronic equipment
– Reduced downtime from electrical surges
– Compliance with international safety standards
– Long service life with reliable performance
– Visual status indication for easy maintenance
## Maintenance and Monitoring
The device includes user-friendly features for ongoing maintenance:
– Green/red status indicator for at-a-glance monitoring
– Replaceable modules for cost-effective maintenance
– Thermal disconnection for fail-safe operation
– Remote signaling capability for integration with monitoring systems
## Compliance and Standards
The BR-40 4P Type 2 SPD meets rigorous international standards:
– IEC 61643-11 (Type 2 SPDs)
– EN 61643-11 (European standard)
– CE marked for European compliance
– RoHS compliant for environmental safety
## Conclusion
For professionals seeking reliable surge protection in TNS systems, the BR-40 4P Type 2 40kA Surge Protective Device offers an optimal combination of performance, safety, and ease of use. Its robust design and comprehensive protection make it an excellent choice for safeguarding electrical installations against transient overvoltages in commercial and industrial applications.
