# 25ka Surge Arrester 25GR 4P Type 1 Specifications and Features
## Introduction to Surge Protection
Keyword: 25ka surge arrester 25gr 4p type 1
Surge protection devices play a crucial role in safeguarding electrical systems from voltage spikes and transient overvoltages. The 25ka Surge Arrester 25GR 4P Type 1 represents a high-performance solution designed for robust protection in demanding electrical environments.
## Key Specifications
Technical Parameters
The 25ka Surge Arrester 25GR 4P Type 1 offers exceptional protection capabilities with the following specifications:
- Nominal Discharge Current (In): 25kA
- Maximum Discharge Current (Imax): 50kA
- Voltage Protection Level (Up): ≤ 2.5kV
- Rated Voltage (Uc): 320V AC
- Response Time: < 25ns
- Number of Poles: 4P (4-pole configuration)
- Protection Class: Type 1 (according to IEC 61643-11)
## Design Features
Construction and Performance
The 25GR model incorporates several advanced design features that enhance its performance and reliability:
- Spark gap technology for superior surge protection
- Thermal disconnector for safe operation
- Visual status indication for easy monitoring
- Robust housing with IP20 protection rating
- Compact design for space-efficient installation
- High-quality materials for long service life
## Application Areas
Where to Use the 25GR 4P Type 1
This surge arrester is particularly suitable for:
- Main distribution boards in commercial buildings
- Industrial power distribution systems
- Telecommunication facilities
- Data centers and server rooms
- Medical facilities with sensitive equipment
- Any application requiring Type 1 surge protection
## Installation Considerations
Mounting and Wiring
For optimal performance, consider these installation guidelines:
- Install at the service entrance or main distribution panel
- Ensure proper grounding with low impedance connections
- Follow local electrical codes and regulations
- Use appropriate cable sizes for connections
- Maintain proper clearance around the device
- Consider combining with Type 2 and Type 3 protectors for comprehensive protection
## Maintenance and Monitoring
Ensuring Continued Protection
To maintain optimal performance of your 25ka Surge Arrester:
- Regularly inspect the visual status indicator
- Perform periodic testing according to manufacturer recommendations
- Replace the unit if it has absorbed significant surge energy
- Keep records of lightning events and protection device status
- Consider professional inspection after major electrical events
## Compliance and Standards
Certifications and Approvals
The 25GR 4P Type