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NXZ

NXZ

The NXZ Series Automatic Transfer Switching Equipment is designed to ensure reliable dual-power transfer between grid or generator supplies in low-voltage distribution systems. With rated operational voltage up to 415 V AC and current up to 630 A, it provides automatic or manual transfer between normal and standby sources. Built with PC-grade construction, intelligent controllers, and EMC protection, the NXZ series guarantees continuous operation for industrial, commercial, and residential applications.

Product Information

Application: Automatic switching between two power supplies (grid–grid or grid–generator) for continuous power delivery
Rated Operational Voltage (Ue): AC 400 / 415 V 50 Hz
Rated Insulation Voltage (Ui): AC 800 V
Rated Impulse Withstand Voltage (Uimp): 8 kV
Rated Current Range: 80 A – 630 A
Frame Currents: 125 A / 250 A / 630 A
Poles: 3 P / 4 P options
Utilization Category: AC-33B
Rated Short-Circuit Making Capacity (Icm): 20 kA–25 kA depending on model
Rated Conditional Short-Circuit Current (Iq): 100 kA / 50 kA
Mechanical Endurance: 8 500 – 3 000 operations (depending on size)
Electrical Endurance: 1 000 – 1 500 operations
Operating Transfer Time: ≤ 1.2 s
Contact Transfer Time: ≤ 0.6 s
Control Voltage Range: 85 % – 110 % of Us
Controller Supply Voltage: AC 230 / 240 V (50/60 Hz)
Controller Options: A Type (standard) / B Type (intelligent)
Transfer Modes:
- Automatic transfer and restore operation (grid-grid)
- Automatic transfer and non-automatic restore operation (grid-grid)
- Automatic transfer and restore operation (grid-generator)
Adjustable Delays:
- Transfer delay: 0 – 300 s
- Return delay: 0 – 300 s
- Generator start/stop delay: 0 – 300 s
Communication: RS-485 (Modbus protocol)
Display Module: LED for A-type / LCD for B-type controller
Protection Functions: Overvoltage, undervoltage, phase failure, and fire-control linkage
Ambient Temperature: −5 °C to +40 °C (−25 °C to +70 °C with temperature compensation)
Altitude: ≤ 2000 m (derating above this limit)
Pollution Degree: Class 3
Installation Mode: Vertical or horizontal; top incoming, bottom outgoing
Standards Compliance: IEC 60947-1, IEC 60947-6-1, IEC 60068 series
Certifications: CB, CE, KEMA

Name

Size

Release time

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NXZ-ATSE-Catalog.pdf

2.95MB

2025-12-23

Download

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Size

Release time

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NXZ Series Automatic（英文）0ZTD.463.1126.EN 70g双胶.pdf

5.65MB

2025-03-27

Download

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Size

Release time

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2206-NXZ-ATSE-EAC Certificate.pdf

600.42KB

2025-03-27

Download

1707-NXZ-250-ATSE-CE Certificate.pdf

2.25MB

2025-03-27

Download

1707-NXZ-250-ATSE-KEMA Certificate.pdf

2.24MB

2025-03-27

Download

1707-NXZ-125-ATSE-CE Certificate.pdf

2.25MB

2025-03-27

Download

1707-NXZ-125-ATSE-KEMA Certificate.pdf

2.24MB

2025-03-27

Download

1707-NXZ-630-ATSE-KEMA Certificate.pdf

2.24MB

2025-03-27

Download

1707-NXZ-630-ATSE-CE Certificate.pdf

2.25MB

2025-03-27

Download

1706-NXZ-250-ATSE-CB Certificate.pdf

621.87KB

2025-03-27

Download

1706-NXZ-630-ATSE-CB Certificate.pdf

603.98KB

2025-03-27

Download

1706-NXZ-125-ATSE-CB Certificate.pdf

603.16KB

2025-03-27

Download

Name

Size

Release time

Operate

NXZ-ATSE-Drawing-250.stp

35.39MB

2025-03-27

Download

NXZ-ATSE-Drawing-125.stp

34.11MB

2025-03-27

Download

NXZ-ATSE-Drawing-630.stp

30.59MB

2025-03-27

Download

NXZ-ATSE-Drawing-250.dwg

1.89MB

2025-03-27

Download

NXZ-ATSE-Drawing-630.dwg

1.87MB

2025-03-27

Download

NXZ-ATSE-Drawing-125.dwg

1.88MB

2025-03-27

Download

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FAQs

What is the NXZ Series Automatic Transfer Switching Equipment used for?

It automatically switches between two power sources—such as grid and generator—to maintain uninterrupted power for industrial, commercial, and residential loads.

What is the difference between the A-type and B-type controllers?

The A-type controller is the standard model with LED indicators, while the B-type controller adds LCD display, RS-485 communication, and advanced monitoring for remote or intelligent control.

Can NXZ operate between grid and generator sources?

Yes. It supports grid–grid and grid–generator modes with configurable automatic transfer and restoration settings via the controller.

How does NXZ ensure safe maintenance?

It includes a padlockable off-position, manual/electric selector switch, and mechanical interlocks to prevent accidental transfer during servicing.

Is the NXZ series suitable for high-altitude or harsh environments?

Yes. It is rated for operation up to 2000 m altitude and in temperatures from −25 °C to +70 °C (with compensation), meeting IEC 60068 environmental standards.