40kA Type 2 Single-Pole Protection, Reliable Terminal Overvoltage Protection Solution

Product Overview

The NPS01-F40 AC 1P Surge Protective Device is a Type 2 surge protection device designed for terminal-level power protection. It complies with IEC 61643-11 and GB/T 18802.11 standards and adopts a compact single-pole modular design with a width of 27mm, suitable for installation in various distribution systems.

With a nominal discharge current of 40kA and maximum discharge current up to 80kA, the device effectively suppresses induced lightning surges and switching overvoltage, reducing residual voltage and protecting downstream electrical equipment.

It is widely used in building distribution systems, industrial control cabinets, communication equipment, monitoring systems, and precision electrical devices.

High-Energy MOV Chip, Fast Response and Long-Term Stability

The device adopts high-performance zinc oxide varistor (MOV) technology, featuring:

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

The integrated thermal disconnection mechanism automatically isolates the device under abnormal overheating conditions, improving operational safety.

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

Compact DIN Rail Design for Flexible Installation

The housing uses UL94V-0 flame-retardant material with IP20 protection, ensuring reliable operation in industrial environments.

Technical specifications:

Discharge current: 40kA (8/20μs)

Maximum discharge current: 80kA

Operating temperature: -40℃ to +80℃

Installation: 35mm DIN rail

Cable size: 4-25mm²

It can be combined with Type 1 SPDs to create a complete multi-stage lightning protection system.

Model	NPS01-F40/275/1	NPS01-F40/320/1	NPS01-F40/385/1	NPS01-F40/440/1
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: 18×91×66mm
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.