ABB 3BHE020356R0101 GFD212A motor thermal relay

ABB 3BHE020356R0101 GFD212A motor thermal relay

Reliable motor protection function

Overload and phase failure protection: This thermal relay can provide reliable overload and phase failure protection for the motor. When the motor experiences overload, that is, when the operating current exceeds the rated value, the bimetallic strip inside the thermal relay will bend due to heat generation. After a certain period of time, it will push the trip mechanism to cut off the power supply to the motor, thereby avoiding the winding from overheating and burning out due to long-term overload. At the same time, it is extremely sensitive to phase failure during the operation of the motor. Once any phase is detected to be disconnected, it can quickly react and cut off the circuit to prevent damage to the motor due to phase loss.

Temperature compensation function: It has excellent temperature compensation characteristics and can adapt to environmental temperature changes up to+70 ° C. At different environmental temperatures, the thermal relay can automatically adjust its operating characteristics to ensure that there will be no misoperation in high temperature environments, and it can also protect the motor in a timely and effective manner in low temperature environments, greatly improving the reliability of motor operation in various complex environments.

Flexible customization and installation advantages

Customized start-up solution: When used in conjunction with a contactor, a customized motor start-up solution can be built according to the user's personalized needs. Whether it is the simple starting control of small motors or the precise starting requirements of large and complex motor systems, effective control and protection of the motor starting process can be achieved through the reasonable combination of thermal relays and contactors, meeting the diverse needs of different industrial scenarios.

Convenient installation method: Perfectly compatible with ABB contactors, it can be directly installed and connected without additional wiring, greatly simplifying the installation process and saving installation time and costs. For specific application scenarios, single installation kits and accessories for remote control are also provided, making it convenient for users to flexibly configure according to their actual needs. At the same time, the thermal relay supports automatic reset mode selection, which can automatically restore the operation of the motor after troubleshooting, effectively reducing downtime and maintenance personnel travel costs. In addition, with the ABB mini contactor, installation can be easily completed even in narrow environments, demonstrating its adaptability under different installation space conditions.

Key technical parameters of the product

Current setting range: With an adjustable current setting range, users can accurately adjust the action current threshold of the thermal relay according to the rated current and actual operating conditions of the motor, ensuring that the motor can be protected appropriately under different load conditions.

Trip level: The trip level is 10/10A, which means that under the specified overload current multiple, the thermal relay can reliably trip within a specific time, timely cut off the circuit, and protect the motor from damage. This precise tripping characteristic ensures fast and effective protection of the motor in case of overload, while avoiding frequent misoperations caused by excessive sensitivity.

Reset mode: It has automatic or manual reset mode to choose from, and users can flexibly set it according to actual application scenarios and control requirements. The automatic reset mode is suitable for situations that require high continuity of motor operation and quick troubleshooting; The manual reset mode is more suitable for situations where detailed troubleshooting and confirmation of faults are required to ensure safety before restoring motor operation. In addition, the thermal relay also has stop and test functions, making it convenient for users to perform necessary operations and inspections during the operation of the motor.

Protection level: Designed with a finger safe shell, the protection level reaches IP20, effectively preventing personnel from accidentally coming into contact with internal live parts and ensuring the personal safety of operators. At the same time, there are clear large-sized markings on the dial for users to make precise parameter settings, which improves the accuracy and convenience of operation. This thermal relay is not only suitable for three-phase motor applications, but also for single-phase application scenarios, with a wide range of applicability.