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Product Overview
In grid-scale energy storage and electric maritime vessels, runaway direct current faults can instantly vaporize standard electrical components. The CHNAILE Heavy-Duty 2-Pole DC Molded Case Circuit Breaker (MCCB) is constructed as an impenetrable firewall against these catastrophic events. Specifically calibrated for a massive 315A continuous DC payload, it acts as the primary bipolar isolator within DC 1000V network architectures. Boasting a flawless 100% Service Breaking Capacity (Ics=Icu=15kA) and an industry-peaking 1500V dielectric insulation strength, this IEC 60947-2 certified switchgear ensures that your capital-intensive battery racks and DC microgrids operate with zero-failure reliability under the most extreme conditions.
Technical Parameters
Device Category: | Heavy-Duty DC Molded Case Circuit Breaker (DC MCCB) |
|---|---|
Poles Configuration: | 2P (Simultaneous Bipolar DC+ and DC- Disconnection) |
Rated Current (In): | 315A (Engineered for massive battery banks & DC links) |
Rated Operating Voltage (Ue): | DC 1000V |
Rated Insulation Voltage (Ui): | 1500V (Apex-tier dielectric firewall) |
Rated Impulse Withstand Voltage (Uimp): | 12kV (Extreme atmospheric & switching surge immunity) |
Ultimate Short-Circuit Breaking Capacity (Icu): | 15kA (Specialized DC plasma suppression) |
Service Short-Circuit Breaking Capacity (Ics): | 15kA (100% of Icu for sustained operational integrity) |
Standard Compliance: | GB/T 14048.2 / IEC 60947-2 |
1. Elite High-Voltage DC Fault Eradication
Dedicated DC Arc Vaporization (15kA): Direct current arcs sustain themselves relentlessly. This 315A MCCB utilizes specialized permanent magnetic blow-out arrays combined with deep arc chutes. Upon a fault, it violently elongates and slices 15,000A DC plasmas into oblivion within milliseconds, preventing lethal cabinet meltdowns.
100% Ics=Icu Unyielding Reliability: An Ics rating matching the Icu (15kA) signifies supreme engineering. It guarantees that even after clearing a devastating short circuit, the breaker’s internal contacts remain structurally intact and fully capable of resuming 315A continuous service.
Bipolar Total Isolation: The synchronized tripping mechanism severs both the positive and negative poles instantly. This absolute physical disconnect removes all dangerous residual DC voltage, ensuring maintenance crews can safely service high-capacity battery modules.
2. Fortified Structural Engineering
1500V Dielectric Thermosetting Armor: Housed in an anti-tracking, V0-rated high-density polymer block. The extraordinary Ui 1500V and Uimp 12kV ratings act as an impenetrable dielectric shield, preventing internal flashovers even during violent grid-switching transients or lightning strikes.
Oversized Silver-Alloy Terminations: To effortlessly route 315 Amps of DC power, the internal contact pads are massively upscaled and plated with industrial silver-tungsten. This dramatically minimizes DC resistance and eliminates the risk of contact welding during high-load charging cycles.
Mechanical Linkage Audit (Red 'Push to Trip'): Features a prominent red diagnostic button, empowering facility engineers to mechanically simulate a trip and verify the health of the heavy-duty linkage system before commissioning a multi-megawatt battery array.
3. Target Application Scenarios
Because of its rare 315A DC capacity and 1500V insulation limit, this heavy-duty MCCB is exclusively mandated by leading EPCs for:
Industrial Battery Energy Storage Systems (BESS): Serving as the ultimate DC main disconnect switch between massive lithium-ion containerized battery racks and central power conversion systems (PCS).
Marine Electric DC Propulsion: Providing vibration-proof, high-amperage isolation for the primary DC bus links powering modern electric ferries and hybrid offshore vessels.
Megawatt Solar Central Inverters: Safeguarding the DC input stage of heavy-duty, utility-scale centralized inverters in massive commercial solar farms.
Heavy DC Microgrids: Managing 1000V direct current distribution networks within advanced electrified manufacturing and heavy metallurgical plants.
4. Global B2B Partnership with CHNAILE Factory
Factory-Direct EPC Procurement: Sourcing heavy-duty DC switchgear directly from our production lines eliminates multi-tier trading margins, providing your engineering firm with a devastating financial advantage in global renewable energy bids.
Exhaustive IEC DC Verification: DC loads are unforgiving. Every 315A unit is subjected to severe thermal imaging, simulated 15kA DC short-circuit blasts, and 12kV impulse testing to guarantee absolute IEC 60947-2 compliance before international dispatch.
Premium OEM Panel Builder Solutions: Leveraging our expansive manufacturing capabilities, we offer tailored OEM solutions—including custom laser-engraved faceplates and bespoke heavy-duty packaging—allowing elite system integrators to scale their proprietary brands effortlessly.
