Why Choose the CHINT NR2-630G-315 Thermal Overload Relay?
The CHINT NR2-630G-315 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 robust CHINT NR2 thermal overload relay series, it delivers adjustable motor protection for demanding industrial applications requiring dependable performance and long operational life.
This relay uses a precision three-phase bimetal thermal protection structure with temperature compensation to maintain accurate tripping performance under changing operating conditions. The NR2-630G-315 includes integrated diagnostic features, adjustable reset operation and independent mounting capability for use in large motor starter assemblies.
With an adjustable current setting range of 200 A to 315 A and a rated operational voltage of up to 690 V AC, the NR2-630G-315 is suitable for protecting large industrial motors used in pumps, compressors, conveyors, HVAC systems and heavy manufacturing equipment.
Key Advantages
- Heavy-duty thermal overload and phase failure protection for large three-phase motors.
- 200 A to 315 A adjustable current range for flexible motor protection settings.
- Designed for high-current CHINT NC2 contactor motor starter systems.
- Independent mounting design for large industrial control assemblies.
- Integrated manual and automatic reset functionality for operational flexibility.
- Temperature compensation improves protection stability in varying environments.
Key Features
- CHINT NR2 thermal overload relay series.
- 200 A to 315 A adjustable overload current setting.
- Three-phase bimetal thermal protection design.
- 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-315 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 unplanned 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 functions 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 processing machinery.
- Industrial fans and HVAC systems.
- Manufacturing and production plants.
- Heavy industrial automation and OEM machinery.
