SP-M40-385-4P is 3-Phase Power Surge Protection Module. It is made of high-quality zinc oxide material, effectively suppressing and discharging surge currents in power lines. The product features a modular design, allowing the base and discharge component to be separated, making maintenance easier.
1. Fast Surge Discharge – Built-in fuse protection ensures ns-level rapid grounding of excess energy.
2. Automatic Overload Protection – If lightning energy exceeds the limit, the fuse disconnects from the ground and triggers a thermal trip mechanism.
3. Visual Status Indicator – The status window changes color from green to red when protection is no longer effective.
4. Remote Alarm Option – Supports an optional remote alarm interface, allowing local or remote monitoring of surge protector performance.
5. Easy Maintenance – Faulty or damaged modules can be quickly inspected and replaced.
6. Standard 35mm DIN Rail Mounting – Allows for secure and easy installation.
7. Flame-Retardant Plastic Housing – Lightweight, durable, and safe.
8. Strong Surge Resistance – Designed to withstand multiple surge impacts with proper grounding.
The protection mode is L+PE/N+PE, making it suitable for various three-phase power equipment surge protection needs.
Common applications include mobile communication base stations, microwave communication stations, telecom rooms, industrial plants, aviation, finance, securities, and other critical power systems. It is ideal for use in power distribution stations, electric motors, industrial machinery distribution cabinets, switch boxes, and other important equipment vulnerable to lightning strikes.
Category | Description |
Working Voltage Un (V) | 380 |
Limiting Voltage Up (V) | 385 |
Normal Discharge Current In (kA) | 20 |
Maximum Discharge Current Imax (kA) | 40 |
Response Time (ns) | ＜25 |
Leakage Current (μA) | ≤20 |
Protection Level Up (kV) | ≤1.8 |
Terminal Type | Screw Terminal |
Weight (g) | 395 |
Working Temperature | -40℃～+80℃ |
Working Humidity | ＜95% Non-condensation |
