NXA Series Air Circuit Breaker

Name: NXA Series Air Circuit Breaker
Brand: Chint

The NXA Series Air Circuit Breaker (ACB) from CHINT delivers reliable protection and intelligent control for low-voltage power distribution. Available from 1600A to 6300A in 3P/4P and fixed or draw-out types, it offers overload, short-circuit, and ground fault protection with advanced monitoring. Its intelligent controller enables precise measurement of current, voltage, power factor, and harmonics, while EMC compliance and wide temperature tolerance ensure safe, stable operation in demanding industrial and commercial environments.

Product Information

Frame Sizes: 1600A, 2000A, 3200A, 4000A, 6300A
Rated Operational Voltage (Ue): 380/400/415V, 440/525V, 690V
Poles: 3P & 4P options
Installation Types: Fixed & draw-out type
Breaking Capacities: N, S, H series (high breaking capacity)
Protection Functions: Overload, short-circuit (short delay & instantaneous), ground fault, neutral line protection
Advanced Protection: Voltage imbalance, over/under-voltage, frequency protection, phase sequence & reverse power protection
Environmental Tolerance: Operating temp -5°C to +40°C (up to -45°C~+70°C for special types), storage -45°C to +70°C
IP Rating: Front IP20, other sides IP00
Compliance: IEC/EN 60947-2, EMC Annex F (guaranteed no false tripping)
Measurement & Monitoring: RMS current/voltage, power factor, THD, harmonic analysis, energy metering

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Release time

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2508-NXA-ACB-Catalog.pdf

34.23MB

2025-08-19

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2401-NXA-ACB-Manual.pdf

39.97MB

2024-09-22

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2301-NXA-32N,S,H-ACB-KEMA Certificate.pdf

2.41MB

2024-09-22

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2301-NXA-32N,S,H-ACB-CE Certificate.pdf

2.26MB

2024-09-22

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2212-NXA-40S,H-ACB-KEMA Certificate.pdf

2.41MB

2024-09-22

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2212-NXA-40S,H-ACB-CE Certificate.pdf

2.26MB

2024-09-22

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2212-NXA-40N-ACB-KEMA Certificate.pdf

2.41MB

2024-09-22

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2212-NXA-20N,S,H-ACB-KEMA Certificate.pdf

2.41MB

2024-09-22

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2212-NXA-63H-ACB-KEMA Certificate.pdf

2.41MB

2024-09-22

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2212-NXA-63H-ACB-CE Certificate.pdf

2.26MB

2024-09-22

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2212-NXA-20N,S,H-ACB-CE Certificate.pdf

2.27MB

2024-09-22

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2212-NXA-40N-ACB-CE Certificate.pdf

2.26MB

2024-09-22

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2212-NXA-16N,S,H-ACB-KEMA Certificate.pdf

2.41MB

2024-09-22

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2212-NXA-16N,S,H-ACB-CE Certificate.pdf

2.26MB

2024-09-22

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2209-NXA-20N,H-ACB-TUV Certificate.pdf

1.29MB

2024-09-22

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2206-NXA-ACB-EAC Certificate.pdf

592.64KB

2024-09-22

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2205-NXA-32N,S,H-ACB-CB Certificate.pdf

2.47MB

2024-09-22

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2112-NXA-20N,S,H-ACB-CB Certificate.pdf

2.8MB

2024-09-22

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2112-NXA-40N-ACB-CB Certificate.pdf

2.72MB

2024-09-22

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2112-NXA-16N,S,H-ACB-CB Certificate.pdf

2.79MB

2024-09-22

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2112-NXA-40S,H-ACB-CB Certificate.pdf

2.76MB

2024-09-22

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2110-NXA-25-ACB-CE Certificate.pdf

2.74MB

2024-09-22

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2110-NXA-25-ACB-CB Certificate.pdf

2.83MB

2024-09-22

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NXA-ACB-Drawing-4000,drawout,3p.stp

76.65MB

2024-09-22

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NXA-ACB-Drawing-1600,drawout,3p.stp

23.99MB

2024-09-22

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NXA-ACB-Drawing-2000,drawout,4p-1.stp

40.87MB

2024-09-22

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NXA-ACB-Drawing-2000,drawout,3p-4.stp

21.21MB

2024-09-22

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NXA-ACB-Drawing-2000,drawout,3p-1.stp

20.6MB

2024-09-22

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NXA-ACB-Drawing-6300,fixed,3p-2.stp

35.21MB

2024-09-22

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NXA-ACB-Drawing-4000,fixed,4p.stp

35.32MB

2024-09-22

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NXA-ACB-Drawing-3200,drawout,3p-3.stp

30.13MB

2024-09-22

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NXA-ACB-Drawing-2000,drawout,3p-2.stp

19.55MB

2024-09-22

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NXA-ACB-Drawing-2000,drawout,3p-5.stp

20.06MB

2024-09-22

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NXA-ACB-Drawing-1600,fixed,3p.stp

23.59MB

2024-09-22

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NXA-ACB-Drawing-6300,fixed,4p.stp

56.79MB

2024-09-22

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NXA-ACB-Drawing-2000,drawout,4p-2.stp

43.12MB

2024-09-22

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NXA-ACB-Drawing-4000,drawout.dwg

1.87MB

2024-09-22

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NXA-ACB-Drawing-1600,drawout,4p.stp

29.78MB

2024-09-22

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NXA-ACB-Drawing-6300,drawout,4p.stp

28.52MB

2024-09-22

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NXA-ACB-Drawing-3200,drawout,3p-5.stp

30.17MB

2024-09-22

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NXA-ACB-Drawing-3200,drawout,3p-2.stp

19.37MB

2024-09-22

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NXA-ACB-Drawing-4000,fixed,3p.stp

36.42MB

2024-09-22

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NXA-ACB-Drawing-2000,fixed,4p.stp

25.91MB

2024-09-22

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NXA-ACB-Drawing-3200,drawout.dwg

820.84KB

2024-09-22

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NXA-ACB-Drawing-4000,fixed.dwg

1.37MB

2024-09-22

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NXA-ACB-Drawing-3200,drawout,3p-4.stp

18.97MB

2024-09-22

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NXA-ACB-Drawing-3200,fixed,4p.stp

31.03MB

2024-09-22

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NXA-ACB-Drawing-1600,fixed,4p.stp

21.84MB

2024-09-22

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NXA-ACB-Drawing-2000,drawout.dwg

713.11KB

2024-09-22

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NXA-ACB-Drawing-6300,drawout.dwg

2.61MB

2024-09-22

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NXA-ACB-Drawing-3200,fixed,3p.stp

24.43MB

2024-09-22

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NXA-ACB-Drawing-6300,drawout,3p-2.stp

28.41MB

2024-09-22

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NXA-ACB-Drawing-2000,drawout,3p-6.stp

33.28MB

2024-09-22

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NXA-ACB-Drawing-2000,fixed.dwg

238.44KB

2024-09-22

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NXA-ACB-Drawing-2000,drawout,3p-3.stp

24.98MB

2024-09-22

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NXA-ACB-Drawing-6300,fixed,3p-1.stp

56.68MB

2024-09-22

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NXA-ACB-Drawing-3200,fixed.dwg

290.4KB

2024-09-22

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NXA-ACB-Drawing-1600,fixed.dwg

1.7MB

2024-09-22

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NXA-ACB-Drawing-4000,drawout,4p.stp

31.13MB

2024-09-22

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NXA-ACB-Drawing-2000,drawout,4p-3.stp

41.21MB

2024-09-22

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NXA-ACB-Drawing-2000,fixed,3p.stp

5.16MB

2024-09-22

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NXA-ACB-Drawing-1600,drawout.dwg

1.3MB

2024-09-22

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NXA-ACB-Drawing-3200,drawout,4p.stp

25.66MB

2024-09-22

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NXA-ACB-Drawing-6300,drawout,3p-1.stp

39.84MB

2024-09-22

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NXA-ACB-Drawing-6300,fixed.dwg

3.48MB

2024-09-22

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NXA-ACB-Drawing-3200,drawout,3p-1.stp

37.27MB

2024-09-22

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FAQs

Can the NXA ACB handle high short-circuit currents for industrial applications?

Yes. The NXA ACB supports short-circuit breaking capacities up to 50kA (for NXA40) and 63kA (for NXA63) with fast tripping (<50ms), making it ideal for demanding industrial systems where fault currents can be very high.

What installation options are available?

You can choose between fixed type and draw-out type ACBs, depending on maintenance and operational needs. Draw-out versions have clear “Disconnected,” “Test,” and “Connected” positions for safe servicing.

How does it perform in harsh environments?

NXA ACBs operate reliably from -5°C to +40°C under normal conditions, and special models can work in extended ranges (-45°C to +70°C). They are also tested for EMC immunity, preventing false trips due to electromagnetic interference.

Does it provide energy monitoring?

Yes. The intelligent controller measures current, voltage, power, power factor, and even harmonic distortion up to the 31st order. This allows users to optimize energy consumption and perform preventive maintenance.

What safety interlocks are included?

The breaker features mechanical and electrical interlocks, padlock provisions, and optional accessories like interphase barriers and door interlocks to ensure operator safety during maintenance.

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