# BR-20 1+1 Type 2 20kA Surge Protective Device for TT and TNS Systems
## Introduction to Surge Protection
Surge protection is a critical aspect of modern electrical systems, safeguarding equipment from voltage spikes caused by lightning strikes, power surges, or switching operations. The BR-20 1+1 Type 2 20kA surge protective device offers reliable protection for both TT and TNS earthing systems.
## Key Features of BR-20 1+1 SPD
The BR-20 1+1 Type 2 surge protective device stands out with its impressive specifications:
– 20kA discharge capacity per mode (L-N, N-PE)
– 1+1 protection mode configuration
– Suitable for both TT and TNS earthing systems
– Compact DIN rail mounting design
– Visual status indication
– Thermal disconnection for safety
## Technical Specifications
Parameter | Value
Type | Type 2 (Class II)
Nominal Voltage (Un) | 230/400V AC
Maximum Continuous Operating Voltage (Uc) | 320V AC
Nominal Discharge Current (In) | 20kA (8/20μs)
Protection Level (Up) | ≤1.5kV
Response Time | <25ns
Operating Temperature Range | -40°C to +80°C
## Installation and Application
The BR-20 1+1 SPD is designed for easy installation in distribution boards:
– Mount on 35mm DIN rail
– Connect according to system requirements (TT or TNS)
– Ensure proper earthing connections
– Install as close as possible to the protected equipment
– Follow local electrical codes and regulations
This device is particularly suitable for:
– Residential buildings
– Commercial facilities
– Industrial applications
– Telecommunication systems
– Data centers
## Benefits of Choosing BR-20 1+1
The BR-20 1+1 surge protective device offers several advantages:
– Dual protection for both phase-to-neutral and neutral-to-earth paths
– High discharge capacity for reliable surge protection
– Compatibility with common earthing systems
– Compact design saves space in distribution panels
– Maintenance-free operation with clear status indication
– Meets international standards for surge protection devices
## Maintenance and Monitoring
While the BR-20 1+1 is designed for maintenance-free operation, regular checks are recommended:
– Visual inspection of status indicators
– Verification of connections
– Replacement if the device shows signs of wear or damage
– Periodic testing as part of the electrical system maintenance
The visual status indicators provide clear information about the device’s operational state, making monitoring simple and straightforward.
## Conclusion
The BR-20 1+1 Type 2 20kA surge protective device represents an excellent solution for protecting electrical installations in both TT and TNS systems. Its robust design, high performance, and versatility make it a reliable choice for various applications. By implementing this SPD, users can significantly reduce the risk of equipment damage and downtime caused by electrical surges, ensuring the longevity and reliability of their electrical systems.
