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Product Overview
In specialized mega-infrastructures like utility-scale wind farms and deep-earth coal mines, standard 400V distribution is highly inefficient due to massive cable resistance over long distances. To solve this, engineers elevate systems to AC 1140V—but controlling this extreme voltage requires a specialized breed of switchgear. The CHNAILE Ultra-High Voltage 3-Pole MCCB is purpose-built to conquer the terrifying arc flashes generated at AC 1140 Volts. Armed with an apex-tier 1150V dielectric insulation strength and a flawless Ics=Icu rating, this 250-Ampere behemoth delivers impenetrable three-phase isolation. It secures multi-million-dollar renewable energy and extraction assets against severe overloads, direct lightning strikes, and catastrophic short circuits.
Technical Parameters
Device Category: | Ultra-High Voltage AC Molded Case Circuit Breaker (MCCB) |
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Poles Configuration: | 3P (Simultaneous 3-Phase Extreme Voltage Isolation) |
Rated Current (In): | 250A (Heavy-duty continuous payload) |
Rated Operating Voltage (Ue): | AC 800V / 1000V / 1140V (Specialized extreme AC) |
Rated Insulation Voltage (Ui): | 1150V (Apex-tier dielectric firewall) |
Rated Impulse Withstand Voltage (Uimp): | 12kV (Superior lightning & grid surge immunity) |
Short-Circuit Breaking Capacity (Icu/Ics): | Up to 36.5kA (100% Ics=Icu reliability at extreme voltages) |
Standard Compliance: | GB/T 14048.2 / IEC 60947-2 |
1. Extreme AC Voltage Fault Eradication
1140V Arc Vaporization: Interrupting an AC 1140V fault generates a monstrous plasma arc. This MCCB utilizes specialized, elongated multi-grid de-ion arc chutes paired with aggressive magnetic blowouts to stretch, cool, and extinguish extreme-voltage short circuits in milliseconds, preventing explosive panel meltdowns.
100% Ics=Icu Sustained Reliability: In remote wind turbines or deep mines, breaker replacement is a logistical nightmare. Featuring an Ics rating equal to its Icu, this device guarantees that even after absorbing a massive short-circuit blast, the contacts remain fully operational to safely resume carrying 250A continuous loads.
Massive Thermal Endurance: The heavily calibrated bimetallic core ensures stable operation despite the intense heat generated by routing 250 Amps of ultra-high voltage power, preventing nuisance trips during the startup of heavy mining excavators.
2. Fortified Environmental Architecture
1150V Dielectric Thermosetting Armor: Housed in a structurally reinforced, anti-tracking V0 polymer block. The extraordinary Ui 1150V and Uimp 12kV ratings act as an impenetrable dielectric shield, preventing internal flashovers even during violent grid-switching transients or direct lightning strikes on wind turbine blades.
Heavy-Duty Industrial Terminations: Equipped with oversized, high-torque hex-bolt terminals. This allows engineers to securely clamp the massive, heavily insulated cables required for 1140V transmission, ensuring a permanent, vibration-proof, zero-loss connection.
Mechanical Linkage Audit (Red 'Push to Trip'): Features a prominent diagnostic button, empowering engineers to mechanically simulate a trip and verify the health of the heavy-duty linkage system before commissioning a massive wind generator.
3. Target Application Scenarios
Due to its extremely rare AC 1140V rating and 12kV surge immunity, this heavy-duty MCCB is explicitly mandated by global EPCs for:
Wind Power Generation: Acting as the critical main disconnect switch between the high-altitude wind turbine nacelle generator and the ground-based step-up transformer.
Deep Underground Mining: Serving as the mandatory high-voltage isolator for explosion-proof mobile substations and heavy shearer loaders in deep coal and mineral mines.
Heavy Maritime & Offshore Rigs: Providing robust, vibration-resistant power distribution for 1000V+ specialized thruster systems and heavy drilling platforms.
Large-Scale Pumping Stations: Managing the ultra-high voltage requirements of massive municipal or agricultural deep-well irrigation pumps to minimize line losses.
4. Global B2B Partnership with CHNAILE Factory
Direct Supply for Mega-Projects: Sourcing ultra-high-voltage AC switchgear directly from our manufacturing floor eliminates massive international trader margins, providing your EPC firm a decisive financial advantage in global infrastructure bids.
Exhaustive IEC 1140V Verification: We do not gamble with extreme voltage. Every 250A unit undergoes brutal thermal imaging, simulated ultra-high voltage short-circuit blasts, and 12kV impulse testing to guarantee absolute IEC 60947-2 compliance before dispatch.
Premium OEM Panel Builder Solutions: Leveraging our expansive manufacturing footprint, we offer tailored OEM solutions—including custom laser-engraved faceplates and bespoke heavy-duty packaging—allowing elite system integrators to scale their brand effortlessly.
