2P Full-Mode Protection with L-N, L-PE and N-PE Surge Discharge Paths

Product Overview

The NPS01-FBC7 AC 2P Surge Protective Device is a Type 1+2 combined surge protection device designed for single-phase 220V power distribution systems. Manufactured according to EN/IEC 61643-11 and GB/T 18802.11 standards, it provides Class I+II comprehensive surge protection.

The two-pole integrated design offers complete protection between L-N, L-PE, and N-PE circuits, effectively reducing both common-mode and differential-mode overvoltage caused by lightning strikes and switching operations.

With a 36mm modular structure and standard 35mm DIN rail installation, the product supports Uc voltage levels from 275V to 440V. It is widely applied in communication equipment rooms, data centers, security monitoring systems, and other single-phase power distribution environments.

Composite Spark Gap and MOV Technology for Reliable Energy Coordination

The internal protection system combines graphite spark gaps with zinc oxide varistors to achieve efficient energy coordination between primary and secondary protection stages.

The graphite spark gap releases high surge energy, while the MOV component provides precise residual voltage control. This structure ensures stable protection performance without continuous current flow or protection blind spots.

The conductive components use T2 copper busbars with tin-plated surfaces, offering excellent conductivity, low contact resistance, and reduced temperature rise. The UL94V-0 flame-retardant housing provides reliable insulation and mechanical protection.

Through automated production, wave soldering, module assembly, and 100% factory testing, each unit maintains consistent electrical performance and durability.

7kA Surge Handling Capability with Visual Status Monitoring

The device provides 7kA (10/350μs) lightning impulse current capability, 20kA (8/20μs) nominal discharge current, and 50kA maximum discharge current. The voltage protection level is as low as 1.2kV, with a response time of ≤25ns, ensuring fast and effective surge suppression.

The built-in thermal disconnection system provides safe protection against module failure. The green/red indicator allows quick inspection of operating status, while optional remote signaling contacts enable integration with building automation and power monitoring systems.

Compatible with a 100A gG backup fuse, the device supports reliable protection coordination. It operates under temperatures from -40℃ to +80℃ and humidity levels of 5%-95%, making it a practical choice for single-phase power protection applications.

Model	NPS01-FBC7/275/2	NPS01-FBC7/320/2	NPS01-FBC7/385/2	NPS01-FBC7/440/2
SPD Test Category	Type1+2/ClassI+II(EN/IEC61643-11, GB/T18802.11)
Maximum Continuous Operating Voltage Uc (Current Type: a.c.)	275V(NPE255V)	320V	385V(NPE255V)	440V
Lightning Impulse Current (10/350μs) [L-PE, N-PE] Iimp	7kA	7kA	7kA	6.25kA
Nominal Discharge Current (8/20μs) [L-PE, N-PE] In	20kA
Maximum Discharge Current (8/20μs) [L-PE, N-PE] Imax	50kA
Voltage Protection Level [L-PE, N-PE] Up	1.2kV	1.3kV	1.5kV	1.7kV
Response Time	≤25ns (N-PE: 100ns)
Backup Fuse	100A gG Fuse
Remote Signal Alarm	Normally Open and Normally Closed Contact Terminals
Remote Alarm Signal Energy Un/In	AC: 250V/0.5A; 125V/1A; DC: 30V/0.1A
Remote Alarm Signal Connection Wire	0.5mm² to 1.5mm²
Remote Contact Type	Floating Changeover Contact
Temperature and Humidity Range	-40℃ to +80℃, 5%~95%
Disconnector Operation Indicator	Red: Failed; Green: Normal
Minimum Installation Conductor Cross-Section Area (L, N, PE)	4mm² Solid Wire / Flexible Wire
Maximum Installation Conductor Cross-Section Area (L, N, PE)	25mm² Standard Wire / Flexible Wire
Installation Method	35mm Standard DIN Rail
Enclosure Material	Red Thermoplastic Material, UL94V-0
Enclosure Protection Degree	IP20
Dimensions	W×L×H: 36×87×87mm
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.