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Introducing the NR2-25 Thermal Overload Relay, engineered for precision protection of medium to large-sized motors. Ideal for applications such as heavy-duty conveyor belts, industrial pumps, and robust manufacturing machinery, this device offers comprehensive overload and phase loss protection. The current setting is fully adjustable to match the motor’s rated capacity, and it features an integrated Test / Reset button for simplified operation.
Constructed for durability and ease of installation, the NR2-25 seamlessly integrates with AC Contactors. Its ABS housing is designed to withstand high temperatures and mechanical vibrations, ensuring reliable performance in demanding environments.
Technical Specifications
- Current Range: 7–10A
- Voltage Rating: AC 220–690V
- Number of Poles: 3
- Contacts: 1NO + 1NC
- Reset Function: Manual / Auto
- Frequency: 50–60Hz
- Operating Temperature: -5°C to 40°C
- Enclosure Material: High-strength ABS
- Standards Compliance: IEC60947-4-1
- Weight: 0.35–0.38 kg
Key Features
- Accurate protection for medium to large-sized motors.
- Adjustable current settings to match motor specifications.
- Convenient Test / Reset button for easy functional verification.
- Robust construction resistant to heat and vibration.
- Direct integration with AC Contactors.
Applications
- Medium to large-sized motors, conveyor belts, pumps, and industrial machinery.
- Control systems utilizing PLC or manual operation.
- Protection against phase loss and overload conditions.
Installation Guidelines
- Mount on DIN rail or directly to the Contactor.
- Wire according to the user manual, ensuring correct current rating alignment.
- Activate the Test button to verify functionality before system startup.
- Ensure the installation environment is dry and ambient temperature does not exceed 40°C.
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