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Chint 20kA 3P+N Type 2 Surge Arrestors SPD (NU6-II-G/F-3PN)

Type 2 20kA 275V surge protective device for three phase systems with neutral. DIN rail mountable with auxiliary contact and visual status indicator for reliable electrical protection.

Complete 3P+N Protection: Protects all three phases and the neutral conductor in three phase electrical systems. 20kA Surge Capacity: Designed to handle high surge currents caused by lightning and power switching events. Auxiliary Contact Included: Supports remote monitoring for improved safety and maintenance control. Easy DIN Rail Installation: Compact design fits neatly into standard distribution boards. Certified and Compliant: Manufactured to IEC/EN 61643-11 standards with CE approval for trusted performance.
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SKU: NU6-II-G/F-3PN
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Product Details

The Chint Type 2 20kA 275V 3P+N Surge Protective Device NU6-II-G/F-3PN is a reliable solution for protecting three phase electrical installations from damaging voltage surges. Designed for use in commercial and industrial environments, this surge protection device helps safeguard sensitive equipment against transient over voltages caused by lightning strikes, switching operations, and power disturbances.

This model provides Type 2 surge protection with a nominal discharge current of 20kA and a maximum continuous operating voltage of 275V. The 3P+N configuration ensures that all three phases and the neutral conductor are protected, reducing the risk of electrical damage across the entire system. This makes it suitable for distribution boards supplying offices, workshops, factories, and other three phase installations.

The unit includes an auxiliary contact for remote status signalling. This allows the condition of the surge protector to be monitored through building management or alarm systems, helping maintenance teams respond quickly if the device reaches the end of its service life. A visual fault indicator on the front of the unit also provides a clear, simple way to check operational status during routine inspections.

Installation is straightforward thanks to the DIN rail mountable design, which fits neatly into standard electrical enclosures. The compact format helps save space within distribution boards while maintaining full protection performance. The modular construction allows the protective modules to be replaced without removing the entire device, reducing downtime and simplifying maintenance.

Manufactured to meet IEC/EN 61643-11 standards and CE approved, this surge protective device delivers dependable performance you can trust. Whether you are upgrading an existing installation or specifying protection for a new project, the NU6-II-G/F-3PN offers a practical and effective way to protect valuable electrical equipment from unexpected power surges.

Product Specifications

Electrical Specifications

  • SPD Class: Type 2
  • Configuration: 3P+N
  • Max Continuous Operating Voltage (Uc):
     - 385V (L1, L2, L3 to Neutral)
    - 255V (Neutral to PE)
  • Nominal Discharge Current (In): 20kA
  • Max Discharge Current (Imax): 40kA
  • Voltage Protection Level (Up):
     - ≤ 1.8kV (L1, L2, L3 to Neutral)
    - ≤ 1.5kV (Neutral to PE)
  • Rated Frequency: 50/60Hz

Mechanical & Installation Data

  • Mounting Method: Fixed
  • Location: Indoor
  • Number of Ports: One
  • Max Operating Temperature: 70°C
  • Operating Altitude: Evaluated for use up to 4,000m above sea level

Standards & Compliance

  • Testing Standard: EN 61643-11/A11:2007
  • Directives: Low Voltage Directive 2006/95/EC
  • Certifications: CE Approved, TÜV SÜD Product Service Certified, Intertek Verified

Key Features

  • Complete Three-Phase Protection: Specifically designed to provide comprehensive surge protection for all three phases plus the neutral line, ideal for industrial or high-demand commercial environments.
  • High-Altitude Performance: Tested and evaluated for safe and reliable operation at altitudes up to 4,000m, making it suitable for a wide range of geographic locations.
  • Robust Surge Handling: Features a 20kA nominal discharge capacity with the ability to handle maximum discharge currents up to 40kA (Imax).
  • Certified Reliability: Undergoes rigorous independent testing to ensure voltage protection levels (Up) remain within safe limits to protect downstream electronic components.

Shipping & Collection

Tracked Delivery (Currently 1-3 business days):

  • Free over £250.
  • £5.99 for orders under £250.
  • £5.99 for orders under £50.

Next Business Day Delivery:

  • £15 Flat Rate.

Collection:

  • Free to collect from our warehouse.

Pre-Order:

  • 5-10 Business Days delivery unless otherwise stated.

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