CHINT NR2-93-70 thermal overload relay with adjustable 55 A to 70 A current range for overload and phase failure protection of three-phase AC motors.
£60.27
The CHINT NR2-93-70 is a high-performance thermal overload relay engineered to protect three-phase AC motors against overload, phase failure and excessive current conditions in industrial automation systems. As part of the dependable CHINT NR2 thermal overload relay series, this relay delivers reliable motor protection for industrial machinery, motor starters and process equipment.
Built with a precision three-phase bimetal tripping mechanism, the NR2-93-70 continuously monitors motor current and disconnects the circuit when abnormal operating conditions occur. Integrated temperature compensation, phase loss sensitivity and selectable reset functionality improve protection accuracy while helping minimise motor damage and operational downtime.
With an adjustable current range of 55 A to 70 A, the NR2-93-70 is ideal for medium to large industrial motors used in conveyors, pumps, compressors, HVAC systems and manufacturing machinery. The relay is designed for direct mounting onto compatible CHINT contactors, enabling compact and efficient motor starter assemblies.
Thermal overload relays are essential components for protecting electric motors against overheating caused by excessive current draw, phase imbalance or mechanical overload. The CHINT NR2-93-70 continuously monitors motor current and trips the associated contactor when unsafe operating conditions are detected.
The NR2 series is widely used in industrial automation systems, OEM machinery and motor control centres where dependable motor protection and compact installation are essential. Its plug-in mounting configuration simplifies panel assembly and maintenance operations.
| Current | 55 A |
|---|---|
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | NR2 Thermal Overload Relay |
| Product type | Thermal overload relay |
| Current adjustment range | 55 A to 70 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 | Plug-in 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 NR2-93-70 protects three-phase AC motors against overload and phase loss conditions in industrial motor control systems.
This relay features an adjustable overload setting range of 55 A to 70 A.
Yes. The relay includes integrated phase loss sensitivity to help prevent motor damage caused by single-phasing conditions.
Yes. The NR2-93-70 supports both manual and automatic reset operation.
The relay is commonly mounted directly onto compatible CHINT contactors inside industrial motor starter panels and automation systems.
CHINT NR2 thermal overload relays are widely used in industrial automation and machinery applications to provide dependable overload protection and reliable long-term motor 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...