Do you know welding automation solutions for circuit breaker components?

By Huang Xiaolei | Benlong Automation | Published July 25, 2026

For MCBs, the welding of core components is now largely performed by automated welding machines, which has significantly reduced both manufacturing costs and market prices. While the level of automation for components in products such as RCCBs, MCCBs, and RCBOs may not yet match that of MCBs, these technologies remain in widespread use across production processes and are in high demand at the factory level. This article aims to help manufacturers in the low-voltage electrical sector understand the current scope of Welding automation solutions and evaluate the merits of investing in them.

What Welding Automation Solutions Cover in Low-Voltage Manufacturing

• Resistance welding of silver contacts and bimetal strips
• Laser and micro-resistance welding of magnetic trip coil leads
• Automated soldering of RCBO PCBA modules
• Ultrasonic and medium-frequency DC spot welding of internal metal parts

Internal components of circuit breakers must withstand the rigors of long-term thermal cycling and fault currents. In the past, these components were typically use welding equipment by manual, such production methods not only yield very low output but also make it difficult to guarantee quality. With technological advancements, modern automated welding machines for circuit breaker components are equipped with stable medium-frequency controllers and visual inspection systems; by utilizing DC welding to ensure optimal results, both production capacity and quality have been significantly improved.

The Business Case: From Manual Welding to Automated Cells

• Labor: Reduces labor costs and frees up workforce capacity
• Yield: Consistently maintains high-quality welding standards
• Production Capacity: Cycle times measured in seconds
• Traceability: Records production data for every batch

The investment case rarely rests on labor savings alone. For most low-voltage electrical producers, the larger prize is quality cost, the scrap, rework and field returns that a variable manual joint generates. Automated welding narrows that variation and produces the process records that global buyers and certification bodies increasingly demand. In practice, traceability and compliance have become a commercial requirement, not an engineering luxury. Weighed over the life of the equipment, the efficiency benefits of industrial automation solutions, higher output, lower defect cost and steadier capacity, usually outrun the upfront price difference.

Core Welding Automation Solutions for Circuit Breaker Assembly

• Thermal trip set welding lines
• Bi-metal support frame welding machines
• Magnetic trip set welding machines
• RCBO PCBA soldering machines
• Semi-automatic welding machines

Benlong Automation has a proven track record in this field. The MCB thermal trip set automatic welding line is operating reliably at the WEG Group’s plant in Jintan, China. The bi-metal support frame welding machine s in stable operation at major circuit breaker factories in Yueqing, China. The magnetic trip set welding machine  is running reliably at Polycab’s Nashik plant in India, while the RCBO PCBA soldering machine is utilized at ABB and Schneider facilities in China as well as by their downstream OEMs. Meanwhile, the semi-automatic welding machine is a preferred choice for the Walton factory in Bangladesh.

Fully Automated vs Semi-Automated Welding: Matching the Solution to Your Volume

• If your product line is uniform and requires high production volumes, high speed automation solutions
• Mixed products or moderate volume suit automated and semi-automated cells
• Limited upfront budget points to semi-automatic now, with an upgrade path later

There is no single right answer, only the answer that fits your product mix, volume and capital plan. Fully automated lines reward high, predictable volumes; semi-automatic stations protect cash flow and suit frequent changeovers. Because Benlong delivers customizable industrial automation solutions rather than fixed catalog machines, the same platform can start semi-automatic and grow with you.

Seen from the boardroom, welding automation is one lever within a wider manufacturing automation solutions strategy: each automated joint compounds into higher yield, tighter cost control and a stronger compliance record. You can review the full range on our Welding / Soldering Project page and map each machine to a stage of your own line.

Talk to Benlong About Your Target

Benlong Automation Technology specializes in the R&D and manufacturing of automation equipment—including automatic welding machines—for MCB, MCCB, RCCB, and RCBO products, all built strictly according to your drawings. Please contact our engineering team to discuss solutions that meet your production capacity requirements and budget, contact our engineering team.

References

• IEC 60898-1 and IEC 60947-2, International Electrotechnical Commission, webstore.iec.ch
• Benlong Automation, Welding / Soldering Project product range