Please Choose Your Language
product category
You are here: Home / Products / Solutions / Operating Mechanism / Operating Mechanism for Motor protector (3056019)

Operating Mechanism for Motor protector (3056019)

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).
Availability:
Quantity:
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
kakao sharing button
snapchat sharing button
telegram sharing button
sharethis sharing button
  • Operating Mechanism

  • HAIPART

  • 3056019


Operating Mechanism

Operating Mechanism Manufacturer | HAIPART


From micron-level clearance control to kilonewton-level torque bearing, HAIPART's multi-scale operating mechanisms prove that precision and strength are never mutually exclusive. Topologically optimized alloy components achieve a 30% weight reduction while improving fatigue resistance by 50%—a perfect marriage of metalworking and computational mechanics.


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 achieve 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.


FAQ

Q1:What is the core function of the operating mechanism?

A1:It enables circuit breaker opening and closing operations and is equipped with mechanical interlocking function to ensure that the circuit breaker cannot be closed under abnormal conditions such as lack of energy storage.


Q2:What are the differences between the operating mechanism and the trip unit?

A2:Operating Mechanism: Only controls the opening and closing actions of the circuit breaker; no protection function.

Trip Unit: Possesses overload and short-circuit protection functions, triggered by mechanical or electronic signals.


Q3:How to choose the operating mechanism type?

A3:The manual operation mechanism is suitable for scenarios requiring frequent operation; the electric operation mechanism supports remote control.


Q4:How should the rated current be matched to the operating mechanism?

A4:The mechanism must support the maximum breaking current of the circuit breaker, and the motor circuit must be equipped with a mechanism with a long mechanical life.


Q5:What are the requirements for the installation location of the operating mechanism?

A5:Electric mechanisms should be located close to the control box to minimize cable length; manual mechanisms should be installed in an easily accessible location.


Q6:How can we verify the reliability of the operating mechanism?

A6:Manual operation: Perform 10 consecutive opening and closing cycles to check for mechanism jamming or abnormal noise.

Electric operation: Simulate remote signals to verify the action time.


Q7:What are the common causes of jamming in the operating mechanism?

A7:Corrosion or deformation of transmission components, aging of springs, burnt-out coils of electric mechanisms, or open circuits in the control circuit.


Q8:What are the prices of your products?

A8:Product prices vary depending on the model, specifications, and quantity. Please consult the sales team or check the official website for details.


Q9:What after-sales services do you provide?

A9:We provide comprehensive after-sales services, including product consultation, technical guidance, installation and commissioning, repair and replacement, and warranty.


Q10:How can I contact your technical support?

A10:Technical support can be contacted through the official website, customer service hotline, or email.


Get a Quote


Contact HAIPART

+86-13819777367

Sales@haipart.com


Brand
HAIPART
Technology
spot welding
assembly
Riveting
stamping
Personnel
300+
Patent
12
Parts
Arc Chamber
Terminals
Stamping Parts
Colis
Wires
Magnetic Core
Assemblies
Magnetic Trip Unit
Thermal Trip Unit
Operating Mechanism
Contact Assembly
Connector Assembly
End Products
MCB
MCCB
RCCB
RCBO
SPD
SCB
Motor Protector
Electronic Over Current Relay
Time Relay
Previous: 
Next: 
We believe that through our manufacturing strengths and service commitment, we are able to provide our customers with superior products and an unparalleled service experience.​​​​​​​
Follow Asendia