China Suppliers Factory ARM3E Series Adjustable MCCB 400V/690V 800A 3/4 Poles with LSIG Trip Unit

Rated Current: Our high-performance circuit breakers are available in a range of rated currents including 630A, 640A, 660A, 680A, 700A, 720A, 740A, 760A, 780A, and 800A. These options make them suitable for various industrial applications.

Number Of Poles: Choose between 3P and 4P configurations to meet your specific electrical system requirements.

Rated Working Voltage: Designed to operate efficiently at rated working voltages of 400V and 690V, our products are crafted in our factory to ensure reliability and safety.

As a trusted China supplier, we prioritize quality and innovation in our manufacturing processes, making our circuit breakers an excellent choice for any industrial installation.

Product Description

MCCB Highlights

Advantages for MCCB Electronic type
Welding process flow of hardware parts:
Copper material Punching and forming Pickling Surface treatment/electroplating of copper parts Welding

Our after-sales rate of copper electroplating does not exceed 3 in 7 years. After degreasing agent, pickling, cleaning, silver plating (the printing plate is converted into silver molecules by electrolysis, and then adsorbed on the copper by electrodes), cleaning, drying, drying at 100 ℃ and other processes, the high-quality parts are obtained.

Through 7.5% potassium sulfide experiment, the time can be as long as 15 minutes, it solves the defects of unstable welding and discoloration of copper parts in the same welding process. The function is to ensure that the electroplated coating does not blacken and discolor within the specified time.

ARM3e

MCCB Production Line Real Showing

Frequently Asked Questions

Q: What is the welding process flow for MCCB hardware parts?

The hardware parts undergo a precise 5-step process: Copper material preparation, punching and forming, pickling, surface treatment/electroplating of copper parts, and finally welding.

Q: What is the after-sales rate for the copper electroplating?

Our quality control ensures an exceptionally low after-sales rate for copper electroplating, not exceeding 3 cases in 7 years.

Q: How is the silver plating process performed on the copper parts?

The printing plate is converted into silver molecules via electrolysis, which are then adsorbed onto the copper by electrodes. This is followed by cleaning, drying, and baking at 100 ℃.

Q: How do you prevent copper discoloration and unstable welding?

We conduct a 7.5% potassium sulfide experiment for up to 15 minutes, which successfully solves the defects of unstable welding and discoloration in the welding process.

Q: What is the purpose of the potassium sulfide experiment?

The experiment ensures that the electroplated coating does not blacken or discolor within the specified time, maintaining high stability and electrical conductivity.

Q: How are high-quality parts obtained during the electroplating process?

High-quality parts are obtained after executing degreasing, pickling, cleaning, silver plating by electrolysis, cleaning, drying, and final baking at 100 ℃.

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