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NXU -II G Low-Voltage Surge Protective Device

NXU-II GF 65-440 1P-NXU

NXU-II G F 65-440-Side

NXU-II GF 65-440 1P-NXU-Front

NXU-II GF 65-440 2P-NXU

NXU-II GF 65-440 2P-NXU

NXU-II GF 65-440 3P-NXU

NXU-II GF 65-440 4P-NXU

NXU-II GF 65-440 4P-NXU

NXU-II GF 65-440 1P-NXU

NXU-II G F 65-440-Side

NXU-II GF 65-440 1P-NXU-Front

NXU-II GF 65-440 2P-NXU

NXU-II GF 65-440 2P-NXU

NXU-II GF 65-440 3P-NXU

NXU-II GF 65-440 4P-NXU

NXU-II GF 65-440 4P-NXU

NXU -II G Low-Voltage Surge Protective Device

The NXU-II G Low-Voltage Surge Protective Device (SPD) is designed to protect electrical systems and connected equipment from lightning strikes and transient overvoltages. Built for 230/400V AC systems, it supports 1P to 4P configurations and operates reliably in TN-S, TN-C, TT, and IT grounding systems. Featuring a maximum discharge current up to 65kA, removable protection modules, and visual fault indicators, the NXU-II G ensures consistent system protection and simple maintenance in residential, commercial, and industrial applications.

Product Information

Function: Protects electrical systems and loads from lightning and transient overvoltage
Applicable Standards: IEC/EN 61643-11
Rated Voltage (Un): 230/400V AC, 50/60Hz
Maximum Continuous Operating Voltage (Uc): 275V, 320V, 385V, 440V
Test Class: II (Type 2 SPD)
Nominal Discharge Current (In): 20kA / 30kA
Maximum Discharge Current (Imax): 40kA / 65kA (8/20µs waveform)
Voltage Protection Level (Up): 1.5–2.2kV (depending on model)
Applicable Grounding Systems: TN-S, TN-C, TT, IT
Protection Modes: L-PE, L-N, N-PE, L-PEN
Poles: 1P, 2P, 3P, 4P, 1P+N, 3P+N
Auxiliary Contact: Optional (remote signaling, INO + INC, AC 250V / 0.5A)
Design:
- Composed of removable protective module and base for easy replacement
- Visual indicator turns red when replacement is required
- Remote control port available for monitoring
Mounting: 35mm DIN rail
Material: Flame-retardant plastic enclosure (UL94 V-0 rated)
Dimensions (mm):
- Height: 90.4 ± 0.3
- Width: 18mm (1P), 36mm (2P), 54mm (3P), 72mm (4P)
Certifications: CE, RoHS

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Release time

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NXU-ⅡG-SPD-Catalog.pdf

732.89KB

2025-12-04

Download

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2004-NXU-IIG-SPD-Manual.pdf

188.16KB

2024-09-22

Download

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2103-NXU-II G-SPD-CE RoHS Declaration Certificate.pdf

888.69KB

2024-09-22

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1908-NXU-ⅡGF-SPD-CE Certificate.pdf

1021.77KB

2024-09-22

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NXU-IIG-SPD-Drawing-1P+N-3D.stp

8.12MB

2024-09-22

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NXU-IIG-SPD-Drawing-40-65 3P-3D.stp

12.56MB

2024-09-22

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NXU-IIG-SPD-Drawing-40-65 1P-3D.stp

3.84MB

2024-09-22

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NXU-IIG-SPD-Drawing-40-65 1P+N-2D.dwg

178.1KB

2024-09-22

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NXU-IIG-SPD-Drawing-40-65 2P-2D.dwg

178.1KB

2024-09-22

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NXU-IIG-SPD-Drawing-40-65 4P-3D.stp

16.58MB

2024-09-22

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NXU-IIG-SPD-Drawing-40-65 1P-2D.dwg

178.1KB

2024-09-22

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NXU-IIG-SPD-Drawing-40-65 3P+N-2D.dwg

178.1KB

2024-09-22

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NXU-IIG-SPD-Drawing-2P-3D.stp

8.05MB

2024-09-22

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NXU-IIG-SPD-Drawing-40-65 4P-2D.dwg

178.1KB

2024-09-22

Download

NXU-IIG-SPD-Drawing-40-65 3P-2D.dwg

178.1KB

2024-09-22

Download

NXU-IIG-SPD-Drawing-40-65 3P+N-3D.stp

16.58MB

2024-09-22

Download

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FAQs

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

It safeguards electrical systems and equipment from lightning surges and transient overvoltage, preventing damage to sensitive components and reducing downtime in power networks.

In what environments can the NXU-II G be installed?

It’s suitable for residential, commercial, and industrial low-voltage systems, including main distribution boards and sub-panels, especially where surge events are frequent.

What grounding systems does it support?

The NXU-II G can be applied in TN-S, TN-C, TT, and IT systems, offering flexibility for various regional and project requirements.

How does the user know when to replace the module?

The SPD features a visual indicator that turns red when the protective module fails. The removable design allows easy replacement without cutting off the circuit.

Is there an option for remote monitoring?

Yes. The NXU-II G/F version comes with a remote signaling port (auxiliary contact) to monitor SPD status remotely via building management or control systems.