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25ka Surge Arrester 25GR 4P Type 1 Technical Specifications and Features

Introduction

The 25ka Surge Arrester 25GR 4P Type 1 is a high-performance protective device designed to safeguard electrical systems from transient overvoltages caused by lightning strikes or switching operations. This surge arrester meets stringent industry standards and provides reliable protection for residential, commercial, and industrial applications.

Key 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: 4 (3 phases + neutral)
• Operating Temperature Range: -40°C to +80°C

Product Features

Advanced Protection Technology

The 25GR 4P Type 1 utilizes high-quality metal oxide varistors (MOVs) that provide excellent clamping characteristics and fast response to transient voltages. The robust design ensures long-term stability and consistent performance.

Durable Construction

Featuring a flame-retardant housing with IP20 protection, this surge arrester is built to withstand harsh environmental conditions while maintaining electrical safety standards.

Visual Status Indication

Equipped with a clear status window that shows the operational state of the device, allowing for easy maintenance and quick identification of any required replacements.

Easy Installation

The compact DIN-rail mounting design (35mm) enables simple integration into existing electrical distribution panels without requiring additional space.

Applications

This Type 1 surge arrester is particularly suitable for:

• Main distribution boards in buildings with external lightning protection systems
• Industrial facilities with sensitive electronic equipment
• Telecommunication infrastructure
• Renewable energy systems (solar/wind installations)

Compliance and Standards

The 25ka Surge Arrester 25GR 4P Type 1 complies with:

• IEC 61643-11
• EN 61643-11
• UL 1449 4th Edition

Conclusion

With its high discharge capacity, reliable performance, and robust construction, the 25ka Surge Arrester 25GR 4P Type 1 offers superior protection against electrical surges. Its compliance with international standards makes it a trusted choice for electrical system protection in various applications.