Sheet Metal Enclosure Fabrication For Low Voltage Circuit Breaker
We provide high-precision sheet metal fabrication for low-voltage circuit breaker enclosures. Our core advantage is precision manufacturing; using advanced Trumpf and Amada equipment, we ensure a processing accuracy of ±0.1mm.
Our fabrication advantages include 13 automated welding robots for high-consistency welds, with the entire process governed by our strict IATF 16949 quality system for component reliability.
We deliver assembly-ready products from our automated powder coating line, capable of C4/C5 high-corrosion protection. This end-to-end quality control is why we are a certified supplier to industry leaders like ABB and Schneider Electric.
Material :
Industrial-Grade Steel (Cold-rolled, Stainless)Thickness :
2.0mm – 4.0mm (Customizable)Surface Treatment :
Powder Coating (C4/C5 capable), Electrophoresis, or GalvanizingProcess Involved :
Laser Cutting, CNC Punching, CNC Bending, Robotic WeldingProduct Overview
This sheet metal frame is the essential structural chassis for low-voltage circuit breakers. It is engineered to provide robust protection for internal components and ensure precise alignment during assembly. Our fabrication process, which includes CNC laser cutting and precision bending, guarantees that every dimension adheres strictly to your technical drawings. This results in a reliable, high-quality component that integrates seamlessly into your power distribution or switchgear systems.

Key Features & Advantages
✨ High Customization: We don't offer one-size-fits-all solutions. Whether you require specific dimensions, mounting patterns, cable entry points, viewing windows, or ventilation, we fabricate precisely to your technical drawings and breaker models (e.g., MCCB, ACB).
✨ Superior Durability: Constructed from high-grade materials, including cold-rolled steel, stainless steel (SUS304/316), or aluminum alloy, ensuring outstanding mechanical strength to resist impact and vibration.
✨ Excellent Protection: Engineered to meet specific Ingress Protection (IP) ratings (e.g., IP55, IP65, NEMA 4X), our enclosures effectively shield internal components from dust, moisture, oil, and chemical ingress, ensuring operational safety.
✨ Premium Finishing: We offer a variety of finishing options, including electrostatic powder coating, painting, galvanizing, or anodizing. This provides a professional aesthetic and, more importantly, robust resistance to corrosion and abrasion.
✨ Optimized Thermal Management: Based on your breaker's heat dissipation needs, we can integrate strategic ventilation louvers, cutouts for cooling fans, or other thermal management solutions to maintain optimal operating temperatures.
✨ Ease of Installation & Maintenance: Designed for field convenience with features like removable gland plates, heavy-duty hinges, grounding studs, and pre-drilled back panels, simplifying the entire process from installation to routine maintenance.
Product Specifications
| Parameter | Details |
| Product Name | Low Voltage Circuit Breaker Enclosure |
| Manufacturing Process | CNC cutting, punching, bending, welding, surface coating |
| Material | Cold-rolled steel / Stainless steel / Aluminum |
| Surface Treatment | Powder coating / Electrophoresis / Galvanizing |
| Dimensional Accuracy | ±0.1 mm (CNC precision) |
| Thickness Range | 1.0 mm – 3.0 mm (customizable) |
| Application System | Low voltage circuit breaker and power distribution cabinet |
| Service Offered | Custom sheet metal processing and assembly |
Applications
Our circuit breaker enclosures are engineered for environments where reliability and safety are paramount. We proudly serve a diverse range of industries:
Manufacturing & Quality Assurance
All products are manufactured in our 30,000㎡ sheet metal facility equipped with advanced CNC punching, AMADA fiber laser cutting, automated welding robots, and automatic powder coating lines. Strict quality control is implemented under ISO9001 and ISO14001 management systems.
Company Strength
Xiamen Huapusheng Sheet Metal Manufacturing Co., Ltd. specializes in power control equipment and precision sheet metal fabrication. With 200+ employees, 36 engineers, and 32 patents, we serve global clients in the power, communication, and industrial sectors.

Customer Cases
We are a trusted OEM partner for global leaders across multiple industries, providing reliable components for their mission-critical applications.

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