Pure Type 1 15kA Two-Pole Lightning Protection for Single-Phase Systems

Product Overview

NPS01-FA15 AC 2P Surge Protective Device is a Type 1 (Class I) pure spark gap SPD designed for single-phase power systems. It complies with EN/IEC 61643-11 and GB/T 18802.11 standards.

The product features independent L-PE and N-PE graphite spark gaps, providing Iimp 15kA (10/350μs) lightning impulse protection. It can safely discharge high-energy lightning currents and is suitable for incoming power protection in single-phase distribution systems.

The compact 54mm modular structure supports 35mm DIN rail mounting, with Uc voltage range from 275V to 385V.

Independent Dual Spark Gap Structure, Reliable Long-Term Operation

Each pole uses high-purity graphite spark gap technology with excellent follow current interruption capability, achieving zero leakage current and zero power loss during normal operation.

The independent two-pole design prevents fault expansion and improves system reliability. High-quality copper conductors provide strong current carrying capability and low temperature rise.

The flame-retardant UL94V-0 housing with IP20 protection rating ensures safe operation in industrial environments.

200A Backup Fuse Coordination for Single-Phase Systems

Technical specifications:

Nominal discharge current In: 15kA (8/20μs)
Protection level Up: 1.5kV
Response time ≤100ns
Recommended backup fuse: 200A gG
Cable size: 4-35mm²

Integrated thermal disconnector and red/green status indicator provide easy maintenance. Optional remote alarm contacts enable system monitoring.

Suitable for single-phase power distribution, communication stations, photovoltaic systems, and other high-current applications.

Model	NPS01-FA15/275/2	NPS01-FA15/320/2	NPS01-FA15/385/2
SPD Test Category	Type1/ClassI (EN/IEC61643-11,GB/T18802.11)
Maximum Continuous Operating Voltage Uc (Current Type: a.c.)	275V	320V	385V
Lightning Impulse Current (10/350μs) [L-PE, N-PE] Iimp	15kA	15kA	15kA
Nominal Discharge Current (8/20μs) [L-PE, N-PE] In	15kA
Maximum Discharge Current (8/20μs) [L-PE, N-PE] Imax	1.5kV	1.5kV	1.5kV
Voltage Protection Level [L-PE, N-PE] Up	≤100ns
Response Time	200A gG Fuse
Backup Fuse	Normally Open and Normally Closed Contact Terminals
Remote Signal Alarm	AC: 250V/0.5A, 125V/1A; DC: 30V/0.1A
Remote Alarm Signal Energy Un/In	0.5mm² to 1.5mm²
Remote Alarm Signal Connection Wire	Floating Changeover Contact
Remote Contact Type	-40℃ to +80℃; 5%~95%
Temperature and Humidity Range	Red: Failed; Green: Normal
Disconnector Operation Indicator	4mm² Solid Wire / Flexible Wire
Minimum Installation Conductor Cross-Section Area (L, N, PE)	35mm² Standard Wire / 25mm² Flexible Wire
Maximum Installation Conductor Cross-Section Area (L, N, PE)	35mm Standard DIN Rail
Installation Method	Red Thermoplastic Material, UL94V-0
Enclosure Material	IP20
Enclosure Protection Degree	W×L×H: 54×91×66mm
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.