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nz7-250h/4/160 chint 160a 4 pole automatic changeover switch
Chint NZ7-250H/4/160 160A 4 pole automatic transfer switch for automatic changeover between two power supplies in industrial and commercial applications.
Why Choose the Chint NZ7-250H/4/160 Automatic Transfer Switch?
The Chint NZ7-250H/4/160 is a robust 4 pole automatic transfer switch (ATS) engineered to provide dependable automatic changeover between two independent power supplies. It continuously monitors both incoming sources and automatically transfers connected loads to the standby supply whenever the preferred source becomes unavailable, helping minimise downtime in critical electrical installations.
As part of the Chint NZ7 Series Automatic Transfer Switching Equipment, this model incorporates intelligent digital control, reliable mechanical and electrical interlocking, and a compact motor-driven operating mechanism. The result is dependable automatic source transfer with straightforward installation and long service life in demanding industrial and commercial environments.
Featuring a 160A rated operational current, 4 pole switching and suitability for 400V AC three-phase four-wire systems, the NZ7-250H/4/160 is an ideal solution for standby generator systems, commercial facilities, manufacturing plants, healthcare environments and other applications where continuous power is essential.
Key Advantages
- Reliable automatic transfer switch for critical power applications.
- 160A rated operational current for higher capacity installations.
- 4 pole switching including neutral transfer.
- Automatic changeover between normal and standby power supplies.
- Mechanical and electrical interlocking prevents simultaneous connection of both supplies.
- Compact motor-driven mechanism reduces installation space requirements.
Key Features
- Chint NZ7 Series Automatic Transfer Switch.
- 160A rated operational current.
- 250AF frame size.
- 400V AC 50Hz rated operational voltage.
- Suitable for three-phase four-wire networks.
- CB Class automatic transfer switching equipment.
- Integrated intelligent controller with digital monitoring.
- Adjustable transfer and return delay settings.
- Generator control and fire control linkage functions.
- Fixed mounting with front connection terminals.
Reliable Automatic Power Transfer
The Chint NZ7 Series continuously monitors the condition of both incoming power supplies and automatically transfers connected loads whenever the preferred supply experiences voltage loss, phase failure or other predefined faults. This helps ensure essential equipment continues operating with minimal interruption.
Its intelligent controller provides configurable transfer delays, generator control functions and comprehensive system monitoring, while dual mechanical and electrical interlocking enhances operational safety by preventing both power sources from being connected simultaneously.
Typical Applications
- Standby generator installations.
- Industrial manufacturing facilities.
- Commercial buildings and offices.
- Hospitals and healthcare facilities.
- Data centres and telecommunications equipment.
- Critical infrastructure and utility installations.
- Building services and electrical distribution systems.
Technical Specifications
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| Coil / Supply Voltage | 230 V AC | |
|---|---|---|
| Device Type | Automatic transfer switch | |
| Operation | Automatic | |
| Current | 160 A | |
| Phase | Three Phase | |
| Manufacturer | Chint | |
| Series | NZ7 Automatic Transfer Switching Equipment | |
| Model | NZ7-250H/4/160 | |
| Product type | Automatic Transfer Switch (ATS) | |
| Frame size | 250AF | |
| Rated operational current | 160A | |
| Number of poles | 4 | |
| Rated operational voltage | 400V AC | |
| Nominal insulation voltage | 500V AC | |
| Rated impulse withstand voltage | 8kV | |
| Frequency | 50Hz | |
| Usage category | AC-33B | |
| Protection rating | IP30 (excluding main terminals) | |
| Control supply voltage | 230V AC | |
| Installation type | Fixed mounting | |
| Connection type | Front connection | |
| Operating transfer time | ≤3.6 seconds | |
| Standard | IEC/EN 60947-6-1 |
Frequently Asked Questions
What is the Chint NZ7-250H/4/160 used for?
It automatically transfers electrical loads between two independent power supplies, ensuring continuity of power during mains failure or other supply interruptions.
What current rating does this automatic transfer switch have?
The NZ7-250H/4/160 has a rated operational current of 160A.
Why is this a 4 pole automatic transfer switch?
The four pole configuration switches all live conductors together with the neutral, making it suitable for three-phase four-wire installations requiring complete source isolation.
Can this switch be used with standby generators?
Yes. The NZ7 Series supports both mains-to-mains and mains-to-generator automatic transfer applications when correctly installed and configured.
Which standard does the NZ7 Series comply with?
The Chint NZ7 Series is manufactured 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 engineers, panel builders and facility managers to provide dependable automatic power transfer and maintain continuous operation of critical electrical systems.
