About the Three Phase AC 40KA 4P Surge Protection Device
A Three-Phase AC 40kA 4P Surge Protection Device (SPD) is designed to protect electrical systems and equipment from voltage spikes and transient surges caused by lightning strikes, power grid fluctuations, or switching operations.
Detailed Features
- High Surge Capacity – Can withstand surge currents up to 40kA, ensuring reliable protection for electrical systems.
- Four-Pole (4P) Design – Suitable for three-phase electrical installations, providing protection across all phase and neutral lines.
- Fast Response Time – Activates instantly to divert excess voltage away from sensitive equipment.
- Modular Design – Often includes replaceable modules for easy maintenance and extended service life.
- Indication System – Equipped with an LED status indicator or mechanical flag for real-time monitoring of device status.
- DIN Rail Mounting – Allows easy installation in electrical panels and distribution boards.
Technical Specifications
- Surge Protection Capacity: Up to 40kA (8/20µs waveform) per phase
- Number of Poles: 4P (Three-phase + Neutral)
- Nominal Voltage (Un): 400V AC (typical)
- Maximum Continuous Operating Voltage (Uc): 275V – 440V AC
- Voltage Protection Level (Up): ≤ 1.5kV – 2.0kV
- Response Time: ≤ 25ns for instant surge suppression
- Leakage Current: < 20µA
- Failure Indicator: Visual (LED or mechanical flag)
- Remote Signaling (Optional): Dry contact for monitoring status
- Installation: DIN rail mountable (35mm) for easy integration into distribution panels
- Protection Mode: L-N, L-PE, N-PE
- Enclosure Material: Flame-retardant UL94-V0 rated plastic
- Compliance: IEC 61643-11, EN 61643-11, GB/T 18802.1
- Operating Temperature:-40°C to +80°C
- Degree of Protection:IP20 – IP40 (depending on model)
Applications of the Three Phase AC 40KA 4P Surge Protection Device
- Industrial and commercial electrical systems
- Solar power installations
- Agricultural and rural electrification projects
- Data centers and communication networks
- Factories and production facilities
This 40kA surge protection device is essential for preventing costly damage to electrical equipment, ensuring system reliability, and enhancing safety in power distribution networks.
