Pure Type 1 15kA Lightning Protection Device for Power Incoming Systems
Product Overview
NPS01-FA15 AC 1P Surge Protective Device is a pure spark gap Type 1 (Class I) SPD developed by Ningpu Lightning Protection. It complies with EN/IEC 61643-11 and GB/T 18802.11 standards and is designed for primary lightning protection applications.
The device adopts high-performance graphite spark gap technology with a lightning impulse current capability of Iimp 15kA (10/350μs), allowing direct discharge of high-energy lightning currents from the first lightning strike.
With a compact 27mm single-pole modular design, the product supports 35mm DIN rail installation and covers Uc voltage levels from 275V to 385V. It is widely used in building electrical systems, power distribution, communication base stations, photovoltaic and wind power systems.

Graphite Spark Gap Technology, Long Service Life and High Reliability
The high-purity graphite spark gap provides excellent follow current interruption capability, maintaining zero leakage current and zero power consumption during normal operation.
The optimized electrode structure ensures stable discharge performance and repeated surge resistance. High-purity copper conductive paths and large terminals provide low resistance and strong current capacity.
The housing is made of UL94V-0 flame-retardant material with IP20 protection rating. Each unit undergoes factory impulse current testing to ensure reliable performance.
200A Backup Fuse Compatible for High-Current Protection
Key parameters:
- Nominal discharge current In: 15kA (8/20μs)
- Voltage protection level Up: 1.5kV
- Response time ≤100ns
- Recommended backup fuse: 200A gG
- Operating temperature: -40℃ to +80℃
- Humidity: 5%-95%
- Cable connection: 4-35mm²
Equipped with thermal disconnection and red/green status indication. Optional remote alarm contacts support centralized monitoring.
It is a reliable Type 1 lightning protection solution for high-current power distribution systems.
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Model |
NPS01-FA15/275/1 |
NPS01-FA15/320/1 |
NPS01-FA15/385/1 |
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SPD Test Category |
Type1/ClassI (EN/IEC61643-11,GB/T18802.11) |
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Maximum Continuous Operating Voltage Uc (Current Type: a.c.) |
275V |
320V |
385V |
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Lightning Impulse Current (10/350μs) [L-PE, N-PE] Iimp |
15kA |
15kA |
15kA |
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Nominal Discharge Current (8/20μs) [L-PE, N-PE] In |
15kA |
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Maximum Discharge Current (8/20μs) [L-PE, N-PE] Imax |
1.5kV |
1.5kV |
1.5kV |
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Voltage Protection Level [L-PE, N-PE] Up |
≤100ns |
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Response Time |
200A gG Fuse |
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Backup Fuse |
Normally Open and Normally Closed Contact Terminals |
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Remote Signal Alarm |
AC: 250V/0.5A, 125V/1A; DC: 30V/0.1A |
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Remote Alarm Signal Energy Un/In |
0.5mm² to 1.5mm² |
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Remote Alarm Signal Connection Wire |
Floating Changeover Contact |
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Remote Contact Type |
-40℃ to +80℃; 5%~95% |
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Temperature and Humidity Range |
Red: Failed; Green: Normal |
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Disconnector Operation Indicator |
4mm² Solid Wire / Flexible Wire |
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Minimum Installation Conductor Cross-Section Area (L, N, PE) |
35mm² Standard Wire / 25mm² Flexible Wire |
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Maximum Installation Conductor Cross-Section Area (L, N, PE) |
35mm Standard DIN Rail |
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Installation Method |
Red Thermoplastic Material, UL94V-0 |
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Enclosure Material |
IP20 |
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Enclosure Protection Degree |
W×L×H: 27×91×66mm |
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Note: The above products can be optionally equipped with a remote signaling function. Products with remote signaling will have "/FM" added after the original model number, such as NPS01-FBC7/275/1/FM. |
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Product Advantages


Product Wiring Diagram

Packaging Dimensions
Inner Box Dimensions (L×W×H): 11.3×10.1×7.7 mm, 15.11×10.1×7.7 mm
Outer Carton Dimensions (L×W×H): 32.5×27.5×27.5 mm




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