63A KDHC Series Welding Machine Changeover Switch

Application

63A KDHC Series Welding Machine Changeover Switch are applicable in electrical circuits with AC 50Hz, rated operating voltage up to 440V and DC voltage up to 240V, with a conventional thermal current up to63A. They are used for manual, infrequent circuit make-and-break for control and circuit conversion. They are mainly installed on NBC-200, 250, 315, 400, 500, 630 and other CO₂ gas shielded welders, inverter arc welders and air plasma cutting machines to adjust current or voltage. They can also be used for circuit switching of electrical equipment.

Technical Parameters

KDHC Series Switch for Welding Machine

Product Size

Working Principle

The KDHC Series Welding Machine Switch adopts a rotary cam operating system. Turning the handle activates the built-in cam unit to control the opening and closing of each contact group.

This cam structure is engineered for occasional manual circuit switching. It stabilizes circuit parameter adjustment without complex electronic components. When the cam locks into place, the silver contacts maintain stable electrical connection, effectively avoiding poor contact and arc damage during the operation of welding machines.

Design Advantages

1.  Silver Alloy Contact Design: Boasting superior conductivity and outstanding arc suppression capability. These contacts are anti-oxidation and wear-resistant, significantly lengthening the service lifespan of the KDHC Series Welding Machine Switch.

2.  High-Insulation Outer Housing: Made of high-strength insulating material. It reaches a rated insulation voltage of 690V and ensures safe and stable operation under 380V rated working voltage.

3.  Diverse Current Options: Models KDHC-20, KDHC-32, KDHC-40 and KDHC-63 are available to match CO₂ welders of different power specifications.

4.  Customizable Structure: Based in China, our factory provides OEM solutions. We can tailor gear quantities, terminal layouts and product markings to meet customized welder design demands.

5.  Compact & Optimized Structure: Refined internal arrangement allows for hassle-free installation inside the limited cabinet space of welding equipment.

Performance Test

Before leaving our Chinese factory, every KDHC Series Welding Machine Switch undergoes strict quality testing. Each individual unit is inspected thoroughly to guarantee reliable performance after assembly into welding equipment:

· Wiring Check We confirm all terminals and internal wiring conform to design standards. The circuit correspondence of each terminal is validated to prevent miswiring risks, ensuring solid, stable connections when installed on CO₂ welders and plasma cutting machines.

· Position Precision Test We assess the accuracy of each gear setting. Rotating the operating handle verifies that every gear engages and locks precisely.

Products that do not meet any inspection criterion are rejected. Only fully qualified switches are packed and shipped to overseas clients.

FAQ

1. Will the switch lose gear accuracy after prolonged use? No. Every KDHC Series Welding Machine Switch passes rigorous gear precision inspection before delivery. Each gear locks securely with precise positioning, free from shifting or skipping. Every setting delivers consistent welding parameters.

2. Does the handle turn smoothly when contacts open and close? Each unit is tested thoroughly for contact operation. Contacts make solid contact and separate cleanly. The handle rotates freely without sticking or lagging, preventing arcing and overheating faults during welding.

3. Can you provide OEM customization for KDHC Series Welding Machine Switch? Yes. As a trusted Chinese manufacturer and factory, we offer complete OEM and ODM services. Custom options include modified gear positions, adjusted terminal structures, logo marking and custom specifications to suit various welder brands.