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nz7-630h/4/630 chint 630a 4 pole automatic changeover switch
Chint NZ7-630H/4/630 automatic transfer switch, a 630A 4 pole ATS designed for automatic power source changeover in commercial, industrial and standby generator applications.
Why Choose the Chint NZ7-630H/4/630 Automatic Transfer Switch?
The Chint NZ7-630H/4/630 is a high capacity 4 pole automatic transfer switch (ATS) designed to provide dependable automatic changeover between two independent power supplies. It continuously monitors the incoming sources and transfers connected loads to the standby supply when the preferred source becomes unavailable, helping maintain continuity of power in critical electrical installations.
As part of the Chint NZ7 Series Automatic Transfer Switching Equipment, this model combines advanced digital control, robust construction and reliable dual interlocking for safe and efficient source transfer. It is designed for larger commercial, industrial and building services applications where resilient power distribution is essential.
With a 630A rated operational current, 4 pole switching and suitability for 400V AC three-phase four-wire systems, the NZ7-630H/4/630 is ideal for standby generator systems, main switchboards, manufacturing facilities, healthcare environments and critical infrastructure requiring automatic power source changeover.
Key Advantages
- High capacity automatic transfer switch for demanding power applications.
- 630A rated operational current for larger electrical distribution systems.
- 4 pole switching including neutral conductor transfer.
- Automatic transfer between normal and standby power supplies.
- Mechanical and electrical interlocking helps prevent simultaneous source connection.
- Suitable for mains-to-mains and mains-to-generator automatic changeover systems.
Key Features
- Chint NZ7 Series Automatic Transfer Switch.
- 630A rated operational current.
- 630AF frame size.
- 4 pole configuration for three-phase four-wire systems.
- 400V AC 50Hz rated operational voltage.
- CB Class automatic transfer switching equipment.
- Integrated digital controller for power source monitoring.
- Automatic and manual operating modes.
- Dual interlock protection for safe transfer operation.
- Fixed mounting with front connection terminals.
Reliable Automatic Power Transfer for High Capacity Systems
Automatic transfer switches such as the Chint NZ7-630H/4/630 are used to monitor two power sources and automatically transfer connected loads when the preferred supply fails or moves outside acceptable operating conditions. This helps reduce downtime and supports continuous operation of essential electrical systems.
The NZ7 Series uses intelligent control and dual interlocking to provide dependable switching while preventing unsafe parallel connection of independent supplies. Its 630A rating makes it particularly suited to larger switchboards, distribution systems and standby power applications where dependable changeover performance is required.
Typical Applications
- Standby generator changeover panels.
- Main switchboards and large distribution boards.
- Industrial manufacturing facilities.
- Commercial buildings and high load electrical systems.
- Healthcare and emergency power systems.
- Data centres and telecommunications infrastructure.
- Critical building services and utility installations.
Technical Specifications
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| Coil / Supply Voltage | 230 V AC | |
|---|---|---|
| Device Type | Automatic transfer switch | |
| Operation | Automatic | |
| Current | 630 A | |
| Phase | Three Phase | |
| Manufacturer | Chint | |
| Series | NZ7 Automatic Transfer Switching Equipment | |
| Model | NZ7-630H/4/630 | |
| Product type | Automatic Transfer Switch (ATS) | |
| Frame size | 630AF | |
| Rated operational current | 630A | |
| Number of poles | 4 pole | |
| Rated operational voltage | 400V AC | |
| Rated insulation voltage | 800V AC | |
| Rated impulse withstand voltage | 8kV | |
| Frequency | 50Hz | |
| Network type | Three-phase four-wire | |
| Electrical equipment grade | CB class | |
| Usage category | AC-33B | |
| Rated short circuit making capacity | 110kA | |
| Rated short circuit breaking capacity | 50kA | |
| Control supply voltage | 230V AC 50Hz | |
| Operating transfer time | ≤5 seconds | |
| Mechanical service life | 3,000 operations | |
| Protection level | IP30, excluding main circuit terminals | |
| Installation type | Fixed mounting | |
| Connection type | Front connection | |
| Standard | IEC/EN 60947-6-1 |
Frequently Asked Questions
What is the Chint NZ7-630H/4/630 used for?
The Chint NZ7-630H/4/630 is used to automatically transfer electrical loads between two power supplies, helping maintain continuity of power during mains failure or source interruption.
What current rating does this automatic transfer switch have?
This model has a rated operational current of 630A.
Is the NZ7-630H/4/630 a 4 pole transfer switch?
Yes. It is a 4 pole automatic transfer switch, making it suitable for three-phase four-wire systems where neutral switching is required.
Can this switch be used with standby generators?
Yes. The NZ7 Series is suitable for mains-to-generator automatic changeover applications when correctly installed and configured within the electrical system.
Which standard applies to the Chint NZ7 Series?
The NZ7 Series is designed in accordance with IEC/EN 60947-6-1 for automatic transfer switching equipment.
Trusted by Electrical Professionals Worldwide
Chint NZ7 automatic transfer switches are trusted by electrical contractors, panel builders and facilities engineers to provide dependable automatic power transfer and resilient electrical distribution in commercial and industrial installations.
