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nr2-93-40 chint thermal overload relay, 30a to 40a rated current
CHINT NR2-93-40 thermal overload relay with adjustable 30 A to 40 A current setting designed for three phase motor overload and phase failure protection.
£27.12
Why Choose the CHINT NR2-93-40 Thermal Overload Relay?
The CHINT NR2-93-40 is a reliable thermal overload relay designed to provide effective overload and phase failure protection for three-phase AC motors in industrial control and automation systems. As part of the established CHINT NR2 thermal overload relay series, it delivers adjustable current protection and dependable motor safeguarding for contactor-based motor starter applications.
This relay features a three-phase bimetal thermal protection structure with temperature compensation to maintain accurate operation under varying load conditions. The NR2-93-40 includes integrated diagnostic functions, test and stop buttons, trip indication and selectable reset modes, making it suitable for reliable installation and maintenance in industrial electrical panels.
With an adjustable current setting range of 30 A to 40 A and a rated operational voltage of up to 690 V AC, the NR2-93-40 is suitable for protecting industrial motors used in pumps, conveyors, fans, compressors and production machinery.
Key Advantages
- Reliable thermal overload protection for three-phase AC motors.
- 30 A to 40 A adjustable current range for flexible motor protection.
- Phase failure protection helps prevent motor damage caused by supply imbalance.
- Compatible with CHINT contactor systems for compact motor starter assemblies.
- Integrated manual and automatic reset selection for flexible operation.
- Temperature compensation improves tripping accuracy in changing operating conditions.
Key Features
- CHINT NR2 thermal overload relay series.
- 30 A to 40 A adjustable overload 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 Industrial Systems
Thermal overload relays such as the CHINT NR2-93-40 protect electric motors by monitoring current levels and disconnecting the motor circuit when overload conditions occur. This helps reduce the risk of overheating, winding damage and unexpected equipment downtime.
The NR2 series is designed for industrial automation engineers, panel builders and OEM manufacturers requiring dependable motor protection, straightforward installation and compatibility with modern contactor-based control systems. The series provides adjustable current settings, temperature compensation, trip indication and flexible mounting options.
Typical Applications
- Industrial pumps and water handling systems.
- Conveyor and material handling equipment.
- Fans and ventilation systems.
- Compressors and mechanical machinery.
- Manufacturing and production equipment.
- Industrial automation and OEM machine building.
Technical Specifications
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| Mounting Type | Direct mount on contactor | |
|---|---|---|
| Device Type | Thermal Overload Relay | |
| Current Range | 30–40 A | |
| Trip Class | Class 10A | |
| Reset Type | Manual / Automatic | |
| Manufacturer | CHINT | |
| Series | NR2 Thermal Overload Relay | |
| Model | NR2-93-40 | |
| Product type | Thermal overload relay | |
| Current adjustment range | 30 A to 40 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 | Plug-in mounting | |
| Protection rating | IP20 when enclosed | |
| Compliance standard | IEC/EN 60947-4-1 |
Frequently Asked Questions
What is the CHINT NR2-93-40 used for?
The CHINT NR2-93-40 is used to protect three-phase AC motors against overload conditions and phase failure in industrial motor control applications.
What current range does the NR2-93-40 support?
The relay supports an adjustable current range of 30 A to 40 A for motor protection settings.
What voltage rating does this overload relay support?
The NR2-93-40 supports operation in systems up to 690 V AC and is suitable 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 NR2-93-40 installed?
The relay is typically mounted as a plug-in unit onto compatible CHINT contactors to create a compact motor starter assembly.
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 automation equipment.
