CHINT NR2-630G-500 thermal overload relay with adjustable 315 A to 500 A current range for overload and phase failure protection of large three-phase AC motors.
£695.81
The CHINT NR2-630G-500 is a heavy-duty thermal overload relay engineered to provide dependable overload and phase failure protection for large three-phase AC motors used in industrial automation and power distribution systems. As part of the advanced CHINT NR2 thermal overload relay series, this relay is designed for demanding high-current motor control applications requiring reliable long-term protection and operational stability.
Built with a precision three-phase bimetal tripping mechanism, the NR2-630G-500 continuously monitors motor current and disconnects the circuit when overload or abnormal operating conditions occur. Integrated temperature compensation, manual and automatic reset functionality and phase loss sensitivity help reduce motor damage, minimise downtime and improve overall system reliability.
With an adjustable current range of 315 A to 500 A, the NR2-630G-500 is ideal for protecting large industrial motors used in pumps, compressors, conveyor systems, HVAC installations and heavy-duty manufacturing equipment. The relay is designed for use with compatible CHINT NC2 series contactors and industrial motor starter assemblies.
Thermal overload relays are essential for protecting industrial motors against overheating caused by excessive current draw, mechanical overload or phase imbalance. The CHINT NR2-630G-500 continuously monitors motor operating current and trips the associated contactor when unsafe operating conditions are detected.
The NR2-630 series is designed for high-current industrial applications where dependable motor protection and operational continuity are critical. Its robust construction and high-current capability make it suitable for large-scale industrial automation systems and heavy-duty motor control installations.
| Current | 315 A |
|---|---|
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | NR2 Thermal Overload Relay |
| Product type | Thermal overload relay |
| Current adjustment range | 315 A to 500 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 isolated |
| Reset mode | Manual / Automatic selectable |
| Mounting type | Independent mounting |
| Protection rating | IP20 when enclosed |
| Mechanical life | ≥ 1,000,000 operations |
| Electrical life | ≥ 100,000 operations |
| Compliance standards | IEC/EN 60947-4-1 |
The NR2-630G-500 protects large three-phase AC motors against overload and phase failure conditions in industrial motor control systems.
This relay features an adjustable overload setting range of 315 A to 500 A.
Yes. The relay includes integrated phase loss sensitivity to help prevent motor damage caused by single-phasing conditions.
Yes. The NR2-630G-500 supports both manual and automatic reset operation.
The relay is typically installed within industrial motor starter assemblies and high-current control systems protecting large motors and industrial equipment.
CHINT NR2 thermal overload relays are widely used in industrial automation and heavy-duty motor control applications to deliver dependable overload protection and reliable long-term system performance.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...