Nale Electric is willing to work together with domestic and foreign merchants to create brilliance!
| Quantity: | |
Product Overview
In mission-critical sectors like pharmaceutical manufacturing and heavy EV fleet logistics, an unexpected main-breaker trip doesn't just cut the lights—it ruins multi-million-dollar biological batches or cripples city transit operations. The CHNAILE Intelligent 3-Pole 400A Electronic MCCB is explicitly designed to solve this engineering challenge. By replacing outdated bimetallic thermal sensors with an advanced solid-state microprocessor, this 400-Ampere device offers absolute control over time and current parameters. It actively monitors the grid using True RMS technology to ignore harmless harmonic distortions. Coupled with an elite 65,000A (65kA) ultimate fault-clearing capacity and proactive LED load diagnostics, this IEC-certified powerhouse prevents catastrophic downtime before it happens.
Technical Parameters
Device Category: | Electronic Molded Case Circuit Breaker (Smart MCCB) |
Poles Configuration: | 3P (Simultaneous 3-Phase Intelligent Load Control) |
Rated Current (In): | 400A Frame (Supports loads exceeding 250kW) |
Adjustable Threshold (Ir1): | 225A to 400A (Digitally precise tuning via front dials) |
Trip Unit Technology: | Solid-State Microprocessor (True RMS sensing) |
Protection Matrix: | Full LSIG (Long-delay, Short-delay, Instantaneous, Ground configurable) |
Rated Operating Voltage (Ue): | AC 400V (50Hz) |
Rated Impulse Withstand Voltage (Uimp): | 12kV (Extreme grid surge & lightning immunity) |
Ultimate Breaking Capacity (Icu): | 65kA / up to 80kA (H-Type Extreme Performance) |
Selectivity Category: | Category B (Designed for complex downstream coordination) |
Diagnostic Interface: | 3-Stage LED Status Indicators (Run, Pre-Alarm, Overload) |
Standard Compliance: | GB/T 14048.2 / IEC 60947-2 |
1. Advanced Microprocessor-Driven Defenses
True RMS Harmonic Immunity: Heavy DC fast chargers and industrial Variable Frequency Drives (VFDs) pollute the AC line with severe harmonic distortion. The internal digital sensor calculates the True Root Mean Square (RMS) value of the current, completely ignoring these safe, chaotic waveforms and ensuring the 400A threshold is respected without frustrating false shutdowns.
Proactive Load Management (Pre-Alarm LED): Located on the front fascia is an intelligent traffic-light LED array. Before a creeping thermal overload reaches the critical trip point, the amber 'Pre-Alarm' LED illuminates. This invaluable feature gives facility managers time to shed non-essential loads (e.g., turning off secondary chargers) before the main power is forcibly cut.
Flawless Selective Coordination (Cat B): Because of its heavy internal reinforcement, this breaker boasts a Category B classification. By adjusting the Short-time delay dials, engineers can force this 400A main breaker to safely "wait" during a massive short circuit. This ensures that only the smaller 63A sub-breaker nearest to the fault trips, preserving power to the rest of the critical facility.
2. Heavy-Duty Structural & Dielectric Integrity
65kA Catastrophic Arc Vaporization: Armed with aggressively oversized magnetic blow-out coils and expansive de-ion arc chutes, this MCCB instantly fragments and extinguishes violent 65,000-Ampere short-circuit plasmas, preventing structural damage and fires within the main distribution board.
12kV Atmospheric Surge Firewall: Commercial EV charging hubs are often fully exposed outdoors. The staggering Ui 1000V internal dielectric insulation and 12kV Uimp rating act as a heavy-duty firewall, ensuring that nearby lightning strikes and violent grid-switching transients cannot breach the breaker to destroy expensive downstream rectification modules.
Tamper-Proof Calibration Shield: The dense array of precision dials is safeguarded beneath a robust, transparent polycarbonate shield. This guarantees that unauthorized personnel cannot accidentally alter the life-saving LSIG parameters in complex commercial panels.
3. Target Application Scenarios
Because of its sophisticated True RMS sensing, proactive diagnostics, and massive 400A capacity, this Electronic MCCB is strictly specified by global EPCs for:
Commercial EV Fleet Charging Depots: Serving as the intelligent, harmonic-immune main AC input disconnect for large-scale Level 3 DC supercharger networks servicing electric buses and logistics trucks.
Pharmaceutical & Biotech Plants: Providing surgically precise, pre-alarm equipped power protection for cleanroom environmental controls, bioreactors, and sensitive cold-chain storage grids.
Industrial VFD Pump Arrays: Supplying tightly monitored, temperature-immune 3-phase power distribution to massive water treatment and desalinization plant pump motors.
Automated Food & Beverage Processing: Serving as the stable main disconnect for heavy automated packaging and processing lines where power dips ruin entire production batches.
4. Global B2B Partnership with CHNAILE Factory
Factory-Direct Smart Tech Supply: Sourcing advanced microprocessor-controlled MCCBs directly from our manufacturing hub eliminates immense trader markups, giving your engineering firm a decisive financial advantage in bidding for premium infrastructure projects.
Rigorous Digital Calibration: We leave nothing to chance. Every electronic trip unit undergoes exhaustive automated secondary injection testing to verify 100% tripping accuracy across all LSIG dial settings (from 225A to 400A) before IEC 60947-2 certification is finalized.
Premium OEM Panel Builder Support: We partner with the world's most demanding system integrators, offering bespoke labeling, customized LED alert configurations, and scalable manufacturing tailored to your smart-building solutions.
400A/3P Electronic Molded Case Circuit Breaker — Instruction Manual
