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nr2-25-4 chint thermal overload relay, 2.50a to 4.00a rated current
CHINT NR2-25-4 thermal overload relay with 2.50-4 A adjustable protection range designed for industrial motor protection systems.
£11.79
Why Choose the CHINT NR2-25-4 Thermal Overload Relay?
The CHINT NR2-25-4 is a reliable thermal overload relay designed to provide dependable motor protection against overload conditions, phase loss and excessive current in industrial electrical systems. As part of the proven CHINT NR2 thermal overload relay series, it delivers accurate protection for contactors, motors and automation equipment.
This overload relay is designed for integration with compatible CHINT contactors and motor starter assemblies, providing adjustable current protection and reliable operation in demanding industrial environments. The NR2 series features a three-phase bimetal structure, temperature compensation, trip indication, test and stop functions, plus manual and automatic reset options for flexible motor protection.
With an adjustable overload protection range of 2.50–4 A, the NR2-25-4 is suitable for protecting smaller three-phase motors where accurate current monitoring and dependable thermal protection are required.
Key Advantages
- Reliable thermal overload protection for electric motors.
- 2.50–4 A adjustable current range for accurate motor protection.
- Protects against motor overload and phase loss conditions.
- Compatible with CHINT motor starter and contactor systems.
- Compact design for straightforward electrical panel installation.
- Suitable for industrial automation and machinery applications.
Key Features
- CHINT NR2 thermal overload relay series.
- Model NR2-25-4.
- 2.50–4 A adjustable overload current setting.
- Three-phase bimetal thermal protection technology.
- Phase loss protection function.
- Manual and automatic reset selector.
- Built-in test and stop buttons.
- Visual trip indication for easy diagnostics.
- Designed for motor starter applications.
- Compatible with CHINT NC1 contactor systems.
Reliable Motor Protection for Industrial Systems
Thermal overload relays such as the CHINT NR2-25-4 monitor motor current and disconnect control circuits when abnormal overload conditions occur. This helps prevent overheating, reduces equipment damage and improves the reliability of industrial electrical installations.
The CHINT NR2 series is designed for use with motor starters and contactors, providing a practical protection solution for automation engineers, panel builders and industrial maintenance teams.
Typical Applications
- Industrial motor protection systems.
- Pumps and water handling equipment.
- Fans and ventilation systems.
- Conveyors and material handling machinery.
- Production line equipment.
- OEM electrical control panels.
Technical Specifications
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| Current Range | 2.5–4 A | |
|---|---|---|
| Trip Class | Class 10A | |
| Mounting Type | Direct mount on contactor | |
| Device Type | Thermal Overload Relay | |
| Manufacturer | CHINT | |
| Series | NR2 Thermal Overload Relays | |
| Model | NR2-25-4 | |
| Product type | Thermal overload relay | |
| Adjustment range | 2.50–4 A | |
| Rated insulation voltage | Up to 690 V AC | |
| Frequency | 50 / 60 Hz | |
| Tripping class | 10A | |
| Mounting type | Plug-in / contactor mounting | |
| Protection function | Motor overload and phase loss protection | |
| Auxiliary contacts | 1NO + 1NC | |
| Standard | IEC/EN 60947-4-1 |
Frequently Asked Questions
What is the CHINT NR2-25-4 used for?
The CHINT NR2-25-4 is a thermal overload relay used to protect electric motors against overload and phase loss conditions.
What current range does the NR2-25-4 support?
The NR2-25-4 provides an adjustable overload protection range of 2.50–4 A.
What type of protection does this relay provide?
The relay provides thermal overload protection and phase loss protection for industrial motor applications.
Which series does the NR2-25-4 belong to?
The NR2-25-4 belongs to the CHINT NR2 thermal overload relay series.
Where is this overload relay typically installed?
The NR2-25-4 is typically installed with compatible CHINT contactors or inside motor starter assemblies within industrial control panels.
Trusted by Industrial Automation Professionals
CHINT NR2 thermal overload relays are widely used by machine builders and electrical engineers to provide dependable motor protection and improve the reliability of industrial automation systems.
