40kA Type 2 Three-Pole Protection, Reliable Solution for Three-Phase Three-Wire Systems

Product Overview

The NPS01-F40 AC 3P Surge Protective Device is a Type 2 SPD designed for three-phase three-wire power distribution systems. It complies with IEC 61643-11 and GB/T 18802.11 standards and adopts a compact three-pole integrated modular structure.

With a nominal discharge current of 40kA and maximum discharge current of 80kA, the device effectively releases induced lightning surges and switching overvoltage, providing reliable protection for industrial electrical equipment.

It is widely used in:

Industrial power distribution systems
Motor control equipment
Variable frequency drives
Photovoltaic grid-connected systems
Industrial control cabinets

Independent MOV Protection, Stable Performance and Long Service Life

Each phase is equipped with a high-energy zinc oxide varistor (MOV) chip, featuring:

Fast response speed
High surge withstand capability
Low leakage current
Excellent aging resistance

Each protection circuit includes an independent thermal disconnection mechanism, which automatically isolates the faulty circuit under overheating or overload conditions.

The red/green visual indicator provides clear operating status, while optional remote alarm contacts allow connection to industrial monitoring systems.

Industrial Modular Design for Flexible Installation

The device features:

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

It can be combined with Type 1 SPDs to build a complete cascade lightning protection system, providing a cost-effective solution for industrial three-phase applications.

Model	NPS01-F40/275/3	NPS01-F40/320/3	NPS01-F40/385/3	NPS01-F40/440/3
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: 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.