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Product Overview
In round-the-clock operations such as international aviation hubs and heavy vehicle assembly lines, a main power failure isn't just an inconvenience—it's an economic disaster. The CHNAILE Intelligent 3-Pole Air Circuit Breaker (ACB) is engineered as the indestructible nerve center of your Main Distribution Board (MDB). Utilizing a robust 2000-Ampere structural frame, it comfortably sustains 1600A of continuous 3-phase AC power. Rather than relying on outdated mechanical trips, this universal circuit breaker incorporates a sophisticated digital brain, offering unparalleled precision in neutralizing massive 80,000-Ampere short circuits. Designed with a professional drawout cradle, it ensures that mega-facilities remain powered, protected, and easily serviceable.
Technical Parameters
| Device Category: | Air Circuit Breaker (ACB / Universal Circuit Breaker) |
| Poles Configuration: | 3P (Simultaneous 3-Phase Main Isolation) |
| Frame Size Current (Inm): | 2000A (Massive structural and thermal capacity) |
| Rated Current (In): | 1600A (Calibrated for continuous megawatt loads) |
| Rated Operating Voltage (Ue): | AC 400V / 690V |
| Rated Insulation Voltage (Ui): | 1000V |
| Ultimate Breaking Capacity (Icu): | 80kA (Extreme open-air plasma suppression) |
| Control Core: | Intelligent Microprocessor Trip Unit (with LED interface) |
| Installation Architecture: | Drawout / Withdrawable Type (Cradle mounted) |
| Standard Compliance: | GB/T 14048.2 / IEC 60947-2 |
1. Microprocessor-Driven Precision Protection
Advanced LSIG Coordination: The integrated intelligent controller allows facility engineers to digitally sculpt the exact protection curve via the front panel keypad. By programming precise thresholds for Long-delay, Short-delay, Instantaneous, and Ground faults (LSIG), this 1600A behemoth ensures localized downstream faults are cleared by smaller sub-breakers, keeping the main grid online.
Open-Air 80kA Arc Extinction: When a facility-level short circuit occurs, the immense magnetic forces drive the plasma arc into massive, multi-tiered metallic arc chutes. The open-air architecture rapidly fragments, cools, and exhausts the 80kA plasma safely away from the primary copper contacts.
Spring-Charged Kinetic Actuation: Closing a 1600A contact requires explosive, instantaneous force to prevent contact welding. The heavy-duty internal spring energy storage system guarantees that the colossal copper pads snap shut with uncompromising speed and pressure.
2. Heavy-Duty Drawout & Structural Engineering
3-Position Drawout Chassis: At 1600 Amps, unbolting live cables for routine maintenance is a severe safety hazard. This ACB is mounted on a heavy-duty racking cradle. Using a specialized hand crank, technicians can seamlessly transition the breaker between 'Connected' (In), 'Test', and 'Disconnected' (Out) positions, drastically reducing maintenance downtime in critical facilities.
Massive Copper Busbar Terminals: The rear of the drawout cradle features gigantic, high-purity copper blocks. These are engineered to interface directly with the main switchboard's busbars, offering near-zero electrical resistance and extreme thermal dissipation under relentless 24/7 operations.
Dielectric Thermosetting Armor: The entire mechanism is shielded by an impact-resistant, anti-tracking V0 polymer enclosure. The 1000V insulation rating ensures complete dielectric separation between phases, preventing internal flashovers.
3. Target Application Scenarios
Due to its intelligent LSIG coordination and rapid-maintenance drawout design, this 1600A ACB is exclusively specified by global EPCs for:
Airport Terminal Infrastructure: Serving as the ultra-reliable main incoming switchgear for baggage handling systems, terminal lighting, and critical aviation control centers.
Heavy Automotive Manufacturing: Acting as the primary substation disconnect for massive automotive assembly plants, powering robotic welding matrices and heavy conveyor belts.
Commercial Skyscrapers: The primary power gateway installed in the basement main electrical rooms of towering commercial developments and luxury shopping malls.
Large-Scale Water Treatment Plants: Providing the immense starting current and reliable 3-phase distribution required by municipal-scale centrifugal pumping stations.
4. Global B2B Partnership with CHNAILE Factory
Factory-Direct Mega-Switchgear Procurement: Bypassing international distributors allows us to provide aggressive, factory-direct pricing on these capital-intensive ACBs, giving your EPC firm a decisive financial edge in government and commercial bids.
Rigorous Factory Acceptance Testing (FAT): Handling megawatt loads leaves zero margin for error. Every ACB undergoes exhaustive automated secondary injection testing, verifying the absolute microsecond precision of the intelligent trip unit prior to global export.
OEM Integration for Switchboard Builders: We actively partner with elite panel builders worldwide, providing comprehensive technical cradle integration support, custom control voltages, and bespoke branding for your premium MDB cabinets.
Instruction Manual for Nailer W1 Series Air Circuit Breakers.pdf
