Precision Manufacturing & Reliable Connection: HAIPART Motor Protector Connector Assembly

HAIPART, a leading connector assembler in China, utilizes precision engineering and stringent quality control to create high-performance connector assemblies for motor protectors. The assembly's conductive system employs CuCr25 silver-based composite contacts, exhibiting arc erosion of <0.05mm³/stroke. Its trapezoidal pin design achieves ±10% self-adjustment of contact pressure to compensate for thermal expansion. The insulation system features a nano-modified PA66 shell, passing the glow wire test, and integrated silicone rubber seals achieving an IP65 protection rating, supporting hot-plugging. The connection mechanism utilizes dual guide posts and anti-misfit coding slots to achieve ±0.5mm insertion alignment, while a torque self-locking mechanism ensures zero loosening under vibration. Its rated current is 400A, the contact material is CuCr25 silver composite material, the insulation material is nano PA66, the protection level is IP65, the insertion tolerance is ±0.5 mm, the self-locking torque is 20 N·m ±10%, the operating temperature is -40°C to +105°C, and it complies with IEC 60947, UL 489, and RoHS standards. It is widely used in motor protectors (MP-400/630 series), molded case circuit breakers (MCCB), industrial control panels, and power distribution units, providing stable and reliable connection solutions for industrial scenarios.

Contact Assembly for MCB

Material Science Breakthroughs

Connector Assembly FAQ

Q1:What is the core function of a connector assembly?

A1:To ensure reliable circuit switching and stable signal transmission and efficient power distribution, low contact resistance and high mechanical durability are required.

Q2:What is the difference between a connector and a contact assembly?

A2:The connector provides a modular interface that supports quick plugging and unplugging and multiple connections; the contact assembly is fixed inside the device and is responsible for switching a single circuit on or off.

Q3:How to choose the connector type?

A3:The arc resistance capability should be selected based on the breaking current, and the motor circuit needs to be designed with a high mechanical life.

Q4:How to match connector ratings?

A4:The rated voltage must be higher than the system's highest operating voltage, the rated current should be derated, and the contact resistance should be less than 1mΩ to avoid signal attenuation or overheating.

Q5:What are the requirements for connector installation location?

A5:The main connector should be located close to the main circuit of the equipment to reduce wiring length and impedance; auxiliary connectors should be installed in a location that is convenient for maintenance.

Q6:How to verify connector reliability?

A6:Manually plug and unplug to check for tightness of contact and any sticking or abnormal noise, and measure contact resistance and verify temperature rise by simulating load through electrical testing.

Q7:What are the common causes of poor connector contact?

A7:Mechanical failure: wear and tear from plugging and unplugging or foreign object isolation; Electrical failure: oxidation and corrosion causing intermittent signal or power interruption.

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.

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