40kA Type 2 Four-Pole Full Protection, High-Precision Terminal Surge Protection

Product Overview

The NPS01-F40 AC 4P Surge Protective Device is a full-pole Type 2 SPD designed for three-phase four-wire power distribution systems.

It complies with IEC 61643-11 and GB/T 18802.11 standards and adopts an L1/L2/L3/N four-pole synchronous protection structure.

With a nominal discharge current of 40kA and maximum discharge current of 80kA, it provides rapid discharge of induced lightning surges, switching overvoltage, and electrical interference.

The device is widely used in:

Large commercial buildings
Industrial plants
Data center power systems
Distribution cabinets
High-standard lightning protection projects

Independent Four-Pole Protection, Reliable and Stable Operation

Each pole is equipped with a high-energy MOV protection chip, providing:

Fast response
Multiple surge resistance
Low leakage current
Excellent aging resistance

Independent thermal disconnection protection ensures that a single faulty pole can be isolated without affecting the entire system.

The built-in red/green status indicator allows easy maintenance inspection, while optional remote alarm contacts support intelligent monitoring and centralized management.

Industrial Modular Design, Compatible with Complete Protection Systems

The device adopts:

UL94V-0 flame-retardant engineering housing
IP20 protection rating
Standard 35mm DIN rail installation
Operating temperature: -40℃ to +80℃
Cable size: 4-25mm²

It can be precisely coordinated with front-end Type 1 SPDs to establish a complete first- and second-level lightning protection system, providing comprehensive protection for three-phase four-wire applications.

Model	NPS01-F40/275/4	NPS01-F40/320/4	NPS01-F40/385/4	NPS01-F40/440/4
SPD Test Category	Type2/ClassII (EN/IEC61643-11, GB/T18802.11)
Maximum Continuous Operating Voltage Uc (Current Type: a.c.)	275V	320V	385V	440V
Lightning Impulse Current (10/350μs) [L-PE, N-PE] Iimp	20kA
Nominal Discharge Current (8/20μs) [L-PE, N-PE] In	40kA
Maximum Discharge Current (8/20μs) [L-PE, N-PE] Imax	1.2kV	1.3kV	1.5kV	1.7kV
Voltage Protection Level [L-PE, N-PE] Up	≤25ns
Response Time	80A 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)	25mm² Standard Wire / 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: 72×91×66mm
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.