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.
