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Product Overview
In sprawling, inaccessible infrastructures like high-altitude cable car networks or deep-valley hydroelectric dams, a momentary lightning strike or moisture-induced ground fault can trip a main breaker, leaving mega-watt facilities paralyzed. The CHNAILE Intelligent 400A Auto-Reclosing Molded Case Circuit Breaker (Smart ARD MCCB) grants these isolated grids autonomous "Self-Healing" capabilities. By merging a colossal 65kA physical chassis with an advanced LCD microprocessor and a heavy-duty motorized actuator, this 4-Pole device automatically attempts to restore power after a transient fault clears. Delivering precise digital coordination and sustaining up to 270kW of heavy 3-phase power, it drastically slashes OPEX (Operational Expenditure) for global EPCs operating in extreme topographies.
Technical Parameters
Device Category: | Smart Auto-Reclosing Earth Leakage MCCB (ARD RCBO) |
Poles Configuration: | 3P+N (Absolute 4-Wire Isolation for complex control grids) |
Digital Rated Current (In): | Adjustable 200A to 400A (Via LCD Keypad) |
Digital Earth Leakage (I∆n): | Adjustable 50mA to 1000mA (Nuisance trip immunity) |
Rated Operating Voltage (Ue): | AC 400V (50Hz) |
Ultimate Breaking Capacity (Icu): | 65kA (Extreme open-air plasma suppression) |
Short-Time Withstand (Icw): | 10kA for 1s (Category B Elite Selectivity) |
Auto-Reclosure Delay: | Adjustable 20s to 60s |
Operator Interface: | High-Contrast LCD Screen with Tactile Membrane Keypad |
Standard Compliance: | GB/T 14048.2 (CCC Certified) |
1. Autonomous Extreme-Terrain Fault Recovery
Motorized Transient Reclosure (ARD): When a severe mountain blizzard or thunderstorm induces a temporary ground fault, the breaker trips to protect the 400A circuit. The internal microprocessor then initiates a programmed countdown (20s-60s). If the grid normalizes, the heavy-duty motor aggressively re-engages the main contacts, instantly restoring power to critical winches and pumps without requiring human intervention.
Granular LCD Capacitive Leakage Tuning: Long, submerged cables in dams generate harmless background capacitive leakage. Utilizing the intuitive LCD, engineers can elevate the leakage threshold to 500mA or 1000mA. This ensures the 400A main breaker ignores natural background "noise" while retaining the ability to detect genuine, catastrophic electrical fires.
Category B Selective Coordination (10kA/1s): A localized short in a single snowmaking machine shouldn't shut down the entire mountain. With a robust 10,000A / 1-second short-time withstand rating, this main incomer safely "holds" its position during a fault, forcing the downstream 63A sub-breaker to clear the danger while the rest of the resort remains fully powered.
2. Heavy-Duty Ruggedized Architecture
3P+N Absolute Isolation: Unattended facilities mix heavy 3-phase pump motors with delicate single-phase telemetry electronics. The 3P+N architecture ensures complete phase and neutral severance during a severe fault, preventing deadly neutral-return voltages from frying sensitive SCADA monitoring equipment.
65kA Catastrophic Arc Vaporization: Armed with aggressively oversized magnetic blow-out coils and expansive de-ion arc chutes, this 400A MCCB instantly fragments and extinguishes violent 65,000-Ampere short-circuit plasmas, protecting the structural integrity of remote distribution boards.
Manual LOTO Override: Features a dedicated physical switch to mechanically disable the motorized auto-reclosure function, complemented by an isolation lock interface. This guarantees absolute Lock-Out/Tag-Out (LOTO) safety for technicians when they finally reach the remote site for hands-on maintenance.
3. Target Application Scenarios
Due to its autonomous power recovery, broad digital adjustability, and massive 400A continuous payload, this Smart ARD MCCB is exclusively mandated by EPCs for:
Remote Hydroelectric Dams: Acting as the self-healing main power hub for unmanned spillway gate winches, dewatering pumps, and dam telemetry control rooms.
Alpine Ski Resorts & Cable Cars: Providing autonomous electrical oversight and nuisance-trip immunity for high-altitude gondola drive motors and expansive snowmaking grids.
Offshore Island Microgrids: Serving as the intelligent, self-resetting main distribution breaker for isolated island communities reliant on localized diesel and solar hybrid generation.
Mining Ventilation Networks: Ensuring continuous, auto-recovering power for massive subterranean exhaust fans where manual reset access takes hours of underground travel.
4. Global B2B Partnership with CHNAILE Factory
Factory-Direct Infrastructure Supply: Sourcing intelligent, motorized 400A switchgear directly from our R&D facility gives your system integration firm a profound pricing edge, allowing you to offer clients massive savings on long-term helicopter and off-road maintenance dispatches.
Exhaustive Automated QA Testing: Auto-reclosing 400 Amps requires absolute mechanical perfection. Every single LCD unit undergoes exhaustive automated leakage simulations, heavy-load motorized endurance testing, and 65kA short-circuit blasts before leaving our smart factory.
OEM/ODM for Global Utility Providers: We offer comprehensive white-labeling solutions, custom software parameter pre-sets, and bespoke communication module integrations tailored specifically for multinational energy operators and resort developers.
