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nr2-630g-630 chint thermal overload relay, 400a to 630a rated current
CHINT NR2-630G-630 thermal overload relay with adjustable 400 A to 630 A current setting designed for high-current three phase motor overload and phase failure protection.
£313.11
Why Choose the CHINT NR2-630G-630 Thermal Overload Relay?
The CHINT NR2-630G-630 is a heavy-duty thermal overload relay designed to provide reliable overload and phase failure protection for high-current three-phase AC motors in industrial control and automation systems. As part of the advanced CHINT NR2 thermal overload relay series, it provides adjustable motor protection for large industrial applications requiring dependable operation and long service life.
This relay features a robust three-phase bimetal thermal protection structure with temperature compensation to maintain accurate tripping performance under changing operating conditions. The NR2-630G-630 is designed for independent mounting applications and provides reliable integration into large motor starter assemblies and electrical control systems.
With an adjustable current setting range of 400 A to 630 A and a rated operational voltage of up to 690 V AC, the NR2-630G-630 is suitable for protecting large industrial motors used in pumps, compressors, conveyors, processing equipment and heavy manufacturing systems.
Key Advantages
- Heavy-duty thermal overload protection for large three-phase AC motors.
- 400 A to 630 A adjustable current range for high-current motor protection.
- Overload and phase failure protection helps prevent motor damage.
- Independent mounting design for large industrial motor starter assemblies.
- Integrated manual and automatic reset functionality for flexible operation.
- Temperature compensation improves tripping accuracy during changing environmental conditions.
Key Features
- CHINT NR2 thermal overload relay series.
- 400 A to 630 A adjustable overload current setting.
- Three-phase bimetal thermal protection structure.
- Class 10A tripping characteristic.
- Integrated overload and phase loss protection.
- Manual and automatic reset selector.
- Built-in TEST and STOP buttons.
- 1 NO + 1 NC electrically separated auxiliary contacts.
Reliable Motor Protection for Heavy Industrial Applications
Thermal overload relays such as the CHINT NR2-630G-630 protect high-power electric motors by continuously monitoring current levels and disconnecting the motor control circuit when overload or abnormal operating conditions occur. This helps reduce overheating, motor damage and unexpected production downtime.
The NR2 series is designed for industrial automation engineers, panel builders and OEM manufacturers requiring dependable protection solutions for high-current motor control applications. Its adjustable settings, diagnostic features and independent mounting design allow straightforward integration into large electrical systems.
Typical Applications
- Large industrial pumps and water treatment systems.
- Heavy-duty conveyor and material handling equipment.
- Compressors and industrial processing machinery.
- Manufacturing and production plants.
- Large HVAC and ventilation systems.
- Heavy industrial automation and OEM machinery.
Technical Specifications
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| Mounting Type | Separate (panel / DIN rail) | |
|---|---|---|
| Device Type | Thermal Overload Relay | |
| Current Range | 400–630 A | |
| Trip Class | Class 10A | |
| Reset Type | Manual / Automatic | |
| Manufacturer | CHINT | |
| Series | NR2 Thermal Overload Relay | |
| Model | NR2-630G-630 | |
| Product type | Thermal overload relay | |
| Current adjustment range | 400 A to 630 A | |
| Rated operational voltage | Up to 690 V AC | |
| Frequency | 50 / 60 Hz | |
| Tripping class | Class 10A | |
| Protection functions | Overload and phase failure protection | |
| Auxiliary contacts | 1 NO + 1 NC electrically separated | |
| Reset mode | Manual / automatic selectable | |
| Mounting type | Independent mounting | |
| Protection rating | IP20 when enclosed | |
| Compliance standard | IEC/EN 60947-4-1 |
Frequently Asked Questions
What is the CHINT NR2-630G-630 used for?
The CHINT NR2-630G-630 is used to protect high-current three-phase AC motors against overload conditions and phase failure in industrial motor control systems.
What current range does the NR2-630G-630 support?
The relay supports an adjustable current range of 400 A to 630 A for large motor protection applications.
What voltage rating does this overload relay support?
The NR2-630G-630 supports operation in systems up to 690 V AC and is designed for industrial motor control circuits.
What protection features are included?
The relay provides thermal overload protection, phase failure protection, temperature compensation, trip indication and adjustable reset functionality.
How is the NR2-630G-630 installed?
The relay is designed for independent mounting within large industrial motor starter assemblies and electrical control panels.
Trusted by Industrial Control Engineers Worldwide
CHINT NR2 thermal overload relays are widely used in industrial motor control systems to provide reliable protection, efficient operation and dependable performance in demanding automation equipment.
