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3P 275V T2 Lightning Arrester 20KA to 40KA Surge Protective Device SPD
Technical Specifications
• System Voltage: 400V AC (three-phase)
• Maximum Continuous Operating Voltage: 275V AC per phase
• Frequency: 50/60Hz
• Number of Poles: 3P + N
• Protection Mode: L-L, L-N, L-PE
• Type Classification: Type 2 (T2)
• Nominal Discharge Current (In): 20kA (8/20μs)
• Maximum Discharge Current (Imax): 40kA(8/20μs)
• Voltage Protection Level (Up):≤1.8kV
• Response Time: < 25ns
• Operating Temperature: -40°C to +85°C
• Status Indication: Visual indicator with color coding
• Connection Method: DIN rail mounting (35mm)
• Terminal Capacity: 25mm²
• Housing Material: Flame-retardant thermoplastic (UL94 V-0)
• Protection Degree: IP20
• Short Circuit Withstand: 25kA
Performance Characteristics
The device employs metal oxide varistor technology with balanced three-phase protection. Its fast response capability ensures effective clamping of transient overvoltages across all phases. The integrated thermal disconnector provides fail-safe operation, while the remote signaling contact allows for system monitoring. The compact modular design facilitates easy installation and maintenance.
Application Scope
- Industrial main distribution boards
- Manufacturing facilities power systems
- Commercial building electrical systems
- Data center power distribution
- HVAC and motor control systems
- Renewable energy installations
- Telecommunication power supplies
Installation Requirements
Installation must be performed by qualified personnel according to IEC 60364 standards. The device should be installed in parallel with the power supply system using appropriate cross-section cables. Proper grounding with low impedance connections is essential for optimal performance. Regular inspection of the status indicator is recommended.
Standards Compliance
• IEC 61643-11: Surge protective devices
• EN 61643-11: European standard
• GB 18802.11: Chinese national standard
• CE certification
• RoHS compliance
• EMC Directive 2014/30/EU
Performance Features
1. Three-phase balanced protection
2. High energy handling capacity
3. Fast response time
4. Thermal overload protection
5. Visual status indication
6. Remote signaling capability
7. Maintenance-free operation
Environmental Specifications
• Storage Temperature: -40°C to +85°C
• Operating Humidity: 5% to 95% RH
• Altitude: ≤2000m above sea level
• Pollution Degree: 2
• Overvoltage Category: IV
• Expected Service Life: >20 years under normal conditions
