Schneider LRD Thermal Relay Price

Schneider LRD Thermal Relay

 Working Principle

When the overload current passes through the thermal element, heat is generated, causing the bimetallic strip to deform. The bimetallic strip is composed of two metals with different expansion coefficients. When heated, it will bend towards the side with a smaller expansion coefficient. When the deformation reaches a certain distance, it will push the connecting rod to act, disconnect the control circuit, thus making the contactor lose power and the main circuit open, achieving overload protection for the motor.

 Product Features  Chint NXR series thermal overload relays price

- **Precise Protection**: Adopting advanced temperature detection technology, it can monitor the working status of the motor in real time, effectively preventing faults caused by motor overload. Once an overload is detected, it can quickly cut off the power supply to protect the motor from damage.CHINT contactor price

- **Wide Setting Range**: It covers a protection range from 0.1A to 140A, with a complete range of specifications. Various models with different current setting ranges can be provided to meet the protection requirements of different motors.

- **Convenient Installation**: It can be directly installed on the LC1D contactor or installed through the DIN rail. For contactors up to 38A, the protection element is only 45mm wide. Installation does not require tools and can be directly inserted into the contactor without occupying additional space.

- **Unique Structural Design**: It completely avoids the critical state during contact conversion and can withstand the impact of a short-circuit current of 17×Ir, featuring good stability and reliability.CHINT surge protector price

- **Diverse Functions**: It has overload and phase-loss protection functions and can be used for thermal overload protection and phase-loss protection of standard motors, as well as for line protection. It also has an ambient temperature compensation function ranging from -15℃ to +55℃, ensuring accurate operation under different ambient temperatures.

- **Flexible Reset Mode**: It has manual/automatic reset buttons, which can be selected according to actual needs. For manual reset, the reset button needs to be pressed manually to restore the relay to its normal working state. For automatic reset, after the fault is eliminated, the bimetallic strip of the thermal relay cools and resets, and the moving contact of the normally closed contact automatically resets under the action of the spring.

 Model Explanation CHINT circuit breaker price

Taking LRD12C as an example, "LRD" represents the thermal element type; "12" is the code, corresponding to a setting current range of 5.5A to 8A; "C" indicates that it is made in China.

Technical Parameters

- **Tripping Class**: Common ones include Class 10, Class 10A, Class 20, Class 30, etc. According to the IEC 60947-4-1 standard, when the actual current is 7.2 times the set current IR, the tripping time ranges of different tripping classes are different. For example, the tripping time of Class 10A is between 2 seconds and 10 seconds.

- **Certifications**: Generally, it has certifications such as CCC, ISO 9001, ISO 14001, etc., ensuring the product quality and safety.

 Application Fields

It is widely used in various industrial scenarios, such as textile machinery, packaging equipment, conveying systems, etc. In production lines and various mechanical equipment, it can provide reliable overload protection for motors.