Nale Electric is willing to work together with domestic and foreign merchants to create brilliance!
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A Strategic Manufacturing Alliance for Global Switchgear Panel Builders
In the demanding sector of heavy low-voltage electrical distribution, professional panel builders and switchgear assemblers require far more than off-the-shelf components. Constructing a megawatt-class Main Distribution Board (MDB) capable of routing 3200 Amperes continuously requires partnering with a supply chain that understands the extreme thermal, electro-dynamic, and spatial challenges of modern panel design. At CHNAILE, we do not compete with our B2B clients for end-user installations; instead, we serve as your dedicated manufacturing backbone.
The CHNAILE 3-Pole 3200A Drawout Air Circuit Breaker (ACB) is meticulously engineered to be the indestructible epicenter of your custom-built Form 4b electrical panels. Capable of carrying monumental loads exceeding 2.2 Megawatts at AC 400V, while standing ready to instantly obliterate terrifying 100,000-Ampere (100kA) short-circuit explosions, this ACB provides your panel designs with unmatched resilience. We provide international electrical manufacturers with the premium, IEC-compliant heavy switchgear necessary to build, brand, and confidently deploy world-class power distribution centers, significantly elevating the profitability and prestige of your switchboard manufacturing business.
Technical Parameters
| Device Category: | Air Circuit Breaker (ACB / Universal Breaker) |
| Poles Configuration: | 3P (Simultaneous 3-Phase Main Incomer) |
| Frame Current (Inm): | 3200A (Massive structural and thermal capacity) |
| Rated Current (In): | 2500A (Adjustable via intelligent controller) |
| Rated Operating Voltage (Ue): | AC 400V / 690V |
| Ultimate Breaking Capacity (Icu): | 100kA (Terrifying plasma suppression at 400V) |
| Short-Time Withstand (Icw): | 65kA for 1s (Category B Elite Selectivity) |
| Control Accessories: | Built-in AC 230V Motor Operator, Shunt Release, Closing Electromagnet |
| Installation Architecture: | Horizontal Drawout (Withdrawable Cradle) |
| Standard Compliance: | GB/T 14048.2 / IEC 60947-2 |
Engineered to Optimize Switchboard Assembly and Copper Busbar Integration
For a switchgear assembly plant, managing labor hours and copper material costs are the two most critical factors in remaining competitive in global tenders. We engineered the mechanical architecture of this 3200A ACB specifically to streamline your factory floor operations.
Modular Drawout Cradle for Rapid Assembly:
Lifting and aligning a 3200A circuit breaker—which weighs well over 100 kilograms—into a tight steel enclosure is a massive safety hazard and a drain on labor. This ACB features an industrial-grade, standardized withdrawable cradle (chassis). Your assembly technicians only need to bolt the relatively lightweight, empty cradle to the main copper busbars. The heavy breaker body remains safely aside until the very final stages of Factory Acceptance Testing (FAT). Once the cabinet is completed, the breaker is effortlessly racked into the cradle using the integrated front-panel mechanism, sliding smoothly through the 'Disconnected', 'Test', and 'Connected' positions. This modular approach drastically reduces assembly time and offers your end-clients zero-downtime hot-swappable maintenance.
Thermal-Dynamic Busbar Interfaces:
Pushing 3200 Amps continuously generates formidable thermal energy. The rear connection terminals on the cradle are massively oversized, forged from high-purity copper, and heavily silver-plated. They are specifically dimensioned to align seamlessly with the multi-layered heavy-gauge copper busbars typically required in 3200A switchboards. This specialized geometry ensures maximum clamping torque, eliminating localized contact resistance and the resulting thermal bottlenecks, guaranteeing your completed panels will pass the stringent temperature-rise requirements of IEC 61439 Type-Tested Assemblies (TTA).
Accessible 47-Pin Secondary Control Matrix:
A modern smart panel requires extensive wiring for automation and telemetry. Located prominently across the top of the chassis is an expansive 47-pin secondary wiring terminal block. This empowers your control panel wirers to easily and cleanly route connections for remote SCADA systems, PLCs, auxiliary alarms, and motorized actuators without fighting for hand space within the dense breaker cavity, drastically reducing wiring errors during production.
Advanced Digital Protection & Motorized Automation
A premium electrical panel is defined by its intelligence and automation capabilities. The CHNAILE 3200A ACB elevates your custom switchboards with highly programmable, state-of-the-art digital control.
Intelligent LCD Microprocessor Trip Unit:
Distinguished by its high-contrast green backlit LCD, the embedded intelligent controller replaces rigid mechanical bimetals with surgical digital precision. Your engineers can program highly specific LSIG (Long-time, Short-time, Instantaneous, Ground-fault) protection curves. With an astonishing Icw (Short-time withstand current) rating of 65kA for 1.0 second, this breaker achieves perfect Category B selective coordination, ensuring that your massive main panel holds steady during a localized fault, allowing downstream breakers to trip first and saving the facility from a total blackout.
Factory-Integrated Motorized Actuation:
To meet the demands of modern Building Management Systems (BMS) and automated generator changeover panels, this unit is shipped fully equipped with AC 230V closing electromagnets, shunt releases, and a motorized spring-charging drive (indicated by the prominent green manual charging handle and corresponding push buttons). This allows for seamless remote-controlled synchronization and load shedding without requiring complex aftermarket retrofitting by your assembly team.
Complete OEM/ODM Services and Supply Chain Dominance
Your switchgear cabinets carry your reputation. Partnering with CHNAILE ensures that the core components inside reflect the premium nature of your brand.
Private White-Labeling and Faceplate Branding:
We offer comprehensive OEM customization. We can provide high-precision laser-engraving of your company logo directly onto the ACB faceplates. The digital interface, instructional labels, and packaging can all be tailored to match your corporate design language perfectly, allowing you to market a cohesive, proprietary product line to your clients.
Facilitating Your Panel Certifications:
Winning government and major commercial bids requires strict regulatory compliance. Our 3200A ACBs are rigorously type-tested in state-of-the-art laboratories to comply with GB/T 14048.2 and IEC 60947-2 international standards. We supply your engineering department with all necessary technical documentation, dimensional drawings, and compliance certificates, significantly accelerating the certification process for your custom switchgear assemblies.
Stable Lead Times & Maximized BOM Profitability:
By bypassing international trading houses and sourcing heavy-duty 3200A switchgear directly from our highly automated manufacturing lines, you secure aggressive wholesale pricing. This direct-to-factory pipeline optimizes your Bill of Materials (BOM), significantly increases your profit margins on large-scale infrastructure projects, and guarantees stable component lead times so your assembly plant never experiences a halt in production.
Instruction Manual for Nailer W1 Series Air Circuit Breakers.pdf
