1. When a large current passes through the coil, according to the principle of electromagnetic induction, a strong magnetic field is generated around the coil, the iron core is magnetized, and a strong attraction is generated to the armature; when the electromagnetic force exceeds the tension of the reset spring, the armature moves rapidly toward the iron core to eliminate the gap between the two; the movement of the armature is transmitted to the contact system of the protector through the mechanical lever, so that the main circuit contact (such as the contactor or circuit breaker contact) is forced to disconnect within milliseconds, cutting off the power supply to the motor. 2. When the overload current passes through the heating element, the heat generated accumulates over time (the greater the overload current, the faster the heat is generated), causing the temperature of the bimetallic strip to continue to rise; due to the different thermal expansion coefficients of the two metals, after the temperature rises, the side with a larger expansion coefficient will bend toward the side with a smaller expansion coefficient, resulting in obvious mechanical deformation; when the deformation of the bimetallic strip reaches the threshold, it will push the mechanical linkage mechanism to quickly separate the moving and static contacts of the protector, cut off the power supply to the motor, and prevent the motor winding from burning due to long-term overheating (exceeding the insulation tolerance temperature).
This active cushioning device, incorporating mechanical memory alloy, autonomously identifies load impact characteristics and adjusts damping parameters in real time. Unlike the hysteresis inherent in passive protection, this predictive protection mechanism creates a dynamic force field during equipment startup and shutdown, effectively mitigating damage to core components caused by sudden stresses and significantly extending the operating life of critical moving parts.
Why Choose HAIPART Operating Mechanism?
✅
Perfect integration of millisecond-level power-off and temperature sensing
✅
Transient control of electromagnetic systems
✅
Five-layer vacuum-coated bimetallic strips, achieving a thermal deformation response speed 1.8 times faster than the national standard
Applications:
Suitable for heavy industry, new energy, smart factories, and other applications.
This active cushioning device, incorporating mechanical memory alloy, autonomously identifies load impact characteristics and adjusts damping parameters in real time. Unlike the hysteresis inherent in passive protection, this predictive protection mechanism creates a dynamic force field during equipment startup and shutdown, effectively mitigating damage to core components caused by sudden stresses and significantly extending the operating life of critical moving parts.
Why Choose HAIPART Operating Mechanism?
✅
Perfect integration of millisecond-level power-off and temperature sensing
✅
Transient control of electromagnetic systems
✅
Five-layer vacuum-coated bimetallic strips, achieving a thermal deformation response speed 1.8 times faster than the national standard
Applications:
Suitable for heavy industry, new energy, smart factories, and other applications.
