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NXU-II Surge Protective Device

NXU-II 40-385-NXU

NXU-II 20-275-NXU-Front

NXU-II 20-275-Side

NXU-II 40-385-NXU-Front

NXU-II 40-385-NXU-Side

NXU-II 20-275-NXU

NXU-II-F 40-385-NXU-Front

NXU-II-F 40-385-NXU-Side

NXU-II-F 40-385-NXU

NXU-II 40-385-NXU

NXU-II 20-275-NXU-Front

NXU-II 20-275-Side

NXU-II 40-385-NXU-Front

NXU-II 40-385-NXU-Side

NXU-II 20-275-NXU

NXU-II-F 40-385-NXU-Front

NXU-II-F 40-385-NXU-Side

NXU-II-F 40-385-NXU

NXU-II Surge Protective Device

The NXU-II Surge Protective Device (SPD) offers vital protection against lightning current and transient overvoltages for electrical systems. It dependably safeguards sensitive equipment by diverting significant surge energy and limiting residual voltage. Featuring clear visual indicators and replaceable modules for simplified maintenance, this device is a pivotal component for ensuring system uptime and equipment longevity across residential, commercial, and industrial power distribution applications.

Product Information

Compliant Standards and Certifications

IEC/EN 61643-11

Main Specifications

Test Category: Class II
Maximum Discharge Current (Imax): 20kA, 40kA
Nominal Discharge Current (In): 10kA, 20kA
Maximum Continuous Operating Voltage (Uc): 255V, 275V, 320V, 385V, 440V
Voltage Protection Level (Up): 1.2kV, 1.5kV, 1.6kV, 1.8kV, 2.0kV
Poles: 1P, 2P, 3P, 4P, 1P+N, 3P+N
Short-circuit Current Withstand Capacity: 5kA
Connecting Wire: <10mm² (M4), <16mm² (M5)
Tightening Torque: 1.5N·m (M4), 2.0N·m (M5)
Protection Degree: IP20
Transient Overvoltage (TOV) Characteristics: Uc 275V/320V supports TOV (UT=336V, tT=5s), Fault Mode (UT=442V, tT=120min); Uc 385V/440V not applicable

Name

Size

Release time

Operate

NXU-Ⅱ-SPD-Catalog.pdf

964.74KB

2025-12-08

Download

Name

Size

Release time

Operate

2302-NXU-Ⅱ-SPD-CE Certificate.pdf

3.35MB

2024-09-22

Download

2302-NXU-Ⅱ-SPD-CE RoHS Declaration Certificat.pdf

250.42KB

2024-09-22

Download

Name

Size

Release time

Operate

NXU-Ⅱ-SPD-Drawing-2D.dxf

485.44KB

2024-09-22

Download

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FAQs

What is the primary purpose of the NXU-II Surge Protective Device?

The NXU-II SPD protects electrical systems and connected devices from transient voltage surges caused by lightning strikes or switching operations, minimizing downtime and equipment damage.

Where can the NXU-II SPD be used?

It’s ideal for residential buildings, data centers, commercial facilities, and industrial power panels, where high-performance surge protection is essential for sensitive equipment.

What grounding systems does it support?

The NXU-II can be applied in TT, TN-S, TN-C, and IT systems, offering maximum adaptability to global power configurations.

How does the user know when replacement is required?

When the protection module deteriorates, the indicator window turns red, signaling that the cartridge needs to be replaced. The plug-in module design allows for quick replacement without rewiring.

Does the NXU-II offer remote monitoring capability?

Yes. The NXU-II/F variant includes an auxiliary contact for remote signal output, enabling integration into building management or alarm systems for real-time status monitoring.