MCB Welding Line For Thermal Assembly

Equipment Overview

The MCB Thermal Assembly Welding Production Line is a fully automated turnkey solution designed for manufacturing thermal assemblies in Miniature Circuit Breakers (MCB).

This production line integrates multiple key processes, including copper wire welding & cutting, bimetal assembly, moving contact welding, arc runner positioning, and terminal welding, to form a complete thermal unit in a continuous and synchronized workflow.

By adopting advanced resistance welding or medium-frequency inverter (MFDC) welding technology, along with high-precision servo positioning systems, the line ensures strong bonding, accurate alignment, and low electrical resistance across all connections.

Designed for high-volume manufacturing, the system significantly reduces manual operations, improves production efficiency, and guarantees consistent product quality. It is an ideal solution for manufacturers seeking standardized, automated, and scalable MCB production.

Main Functions

• Automatic feeding of copper wires
• Wire cutting, forming, and positioning
• Bimetal feeding and assembly
• Moving contact feeding and welding
• Arc runner feeding and positioning
• Terminal feeding and welding
• Multi-point welding integration (resistance / MFDC)
• Assembly of complete thermal unit
• Inline inspection and quality control 
• Automatic unloading of finished thermal assemblies

Technical Specifications

Application Scope

The equipment is widely used in the manufacturing of:

• MCB (Miniature Circuit Breaker) manufacturing
• Thermal component assembly
• Low-voltage electrical production lines
• Automated circuit breaker manufacturing

After-Sales Service & support

We are committed to long-term cooperation with full technical support:

✅1-Year Free Warranty ：Covers all non-human damages. Replacement and repair included.

✅Lifetime Maintenance Support：We offer lifelong technical assistance and spare parts supply.

✅On-Site Installation & Commissioning：Professional engineers are available to visit your site for setup .

✅Operator Training：On-site or remote training to ensure your team can run the machine independently.

✅Remote Technical Support：Quick response via video call, remote control, Email, WhatsApp, and WeChat.

References & Case Studies

Our equipment in China	Our equipment in Europe

Q&A (FAQ)

Q1: What components are included in the thermal assembly?
A: Copper wire, bimetal strip, moving contact, arc runner, and terminal.

Q2: Is this a full production line or a single machine?
A: It is a fully automated production line integrating multiple processes.

Q3: What welding technology is used?
A: Resistance welding or MFDC welding depending on configuration.

Q4: Can the line be customized?
A: Yes, it can be tailored to different product designs and production capacities.

Q5: Does the line support high-volume production?
A: Yes, it is designed for continuous, high-efficiency manufacturing.