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Product Overview
Direct current (DC) electrical arcs at 1000 Volts are incredibly destructive and notoriously difficult to extinguish. Standard AC breakers will catastrophically fail under these conditions. The CHNAILE Heavy-Duty 4-Pole DC Circuit Breaker is a purpose-built Photovoltaic (PV) isolation device, engineered to safely command multi-string solar arrays generating up to 160 Amps at DC 1000V. Compliant with the rigorous IEC 60947-2 industrial standard, this specialized switchgear protects capital-intensive renewable energy infrastructure from devastating reverse currents and severe short circuits, ensuring uninterrupted green power generation.
Technical Parameters
Device Category: | Photovoltaic (PV) DC Industrial Circuit Breaker |
|---|---|
Poles Configuration: | 4P (Wired in series for 1000V high-voltage DC isolation) |
Rated Current (In): | 160A (Ultra-high capacity for solar strings) |
Rated Operating Voltage (Ue): | DC 1000V |
Ultimate Short-Circuit Breaking Capacity (Icu): | 15000A (15kA) |
Rated Impulse Withstand Voltage (Uimp): | 6kV (Lightning & grid surge resilience) |
Application Category: | CAT A (Photovoltaic systems) |
Installation: | Heavy-Duty 35mm DIN-Rail Snap-on |
Standard Compliance: | GB/T 14048.2 / IEC 60947-2 |
1. Extreme Photovoltaic Protection Mechanisms
1000V DC Arc Quenching: Features elongated, specialized magnetic blow-out coils and expansive arc chutes. When a fault occurs, the magnetic field stretches the intense 1000V DC arc, forcing it into the extinguishing plates to safely neutralize the plasma within milliseconds.
Bi-Directional PV Overload Defense: The robust 160A thermal elements are calibrated to monitor heavy continuous DC loads. It reliably protects solar panels and battery banks from both forward overloads and dangerous reverse-feed currents originating from adjacent faulty strings.
Lightning Surge Resilience (6kV): Solar farms are highly exposed to weather elements. The 6kV impulse withstand rating (Uimp) shields the internal isolating mechanism from severe lightning-induced voltage spikes.
2. Heavy-Duty Renewable Architecture
Solar-Grade Thermosetting Enclosure: Molded from premium, V0-rated insulating polymers designed to withstand the elevated ambient temperatures found inside sealed outdoor solar combiner boxes baking in direct sunlight.
High-Torque Hex Fasteners: Accommodating thick, heavily insulated DC cables requires massive clamping force. The integrated hex-socket screw terminals allow for maximum tightening torque, preventing micro-arcing and overheating at the connection points.
4-Pole Series Synchronization: The unified tripping bar ensures that all four poles engage and disengage simultaneously, safely splitting the 1000V load across multiple contact gaps to achieve safe physical isolation.
3. Target Application Scenarios
Because of its extreme DC 1000V and 160A rating, this heavy-duty breaker is exclusively specified by renewable energy EPCs for:
Utility-Scale Solar Farms: Acting as the main incoming/outgoing protection switch within 1000V large-scale solar array combiner boxes.
Battery Energy Storage Systems (BESS): Providing critical short-circuit and isolation protection between massive lithium-ion battery banks and grid-tied inverters.
Commercial Grid-Tied Inverters: Safeguarding the DC input stage of heavy-duty central inverters in commercial rooftop solar installations.
DC Fast-Charging Hubs: Managing the high-voltage DC distribution infrastructure powering Level 3 EV superchargers.
4. Global B2B Partnership with CHNAILE Factory
Direct Manufacturing for EPCs: Bypassing traders allows us to offer you aggressive, factory-direct pricing for your capital-intensive renewable energy tenders.
Rigorous DC Standard Testing: DC testing is exponentially more demanding than AC. Every 1000V breaker undergoes stringent 15kA short-circuit simulation and thermal calibration to ensure absolute IEC 60947-2 compliance prior to export.
Custom Solar Branding Solutions: With scalable production lines, we readily offer specialized OEM/ODM services, including bespoke housing colors and laser-etched branding for leading global solar component distributors.
