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Naile Electric Co., Ltd. was jointly established by a group of electrical professionals with years of experience in technology development and management. It owns modern industrial plants and office spaces. As a modern technology-based enterprise, it specializes in the production and operation of lo
Naile Electric Co., Ltd. was jointly established by a group of electrical professionals with years of experience in technology development and management. It owns modern industrial plants and office spaces. As a modern technology-based enterprise, it specializes in the production and operation of lo
Naile Electric Co., Ltd. was jointly established by a group of electrical professionals with years of experience in technology development and management. It owns modern industrial plants and office spaces. As a modern technology-based enterprise, it specializes in the production and operation of lo
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NLB1-160 PV 2P
CHNAILE
Product Overview
Managing massive direct current loads in renewable energy sectors requires engineering that goes far beyond standard switchgear. The CHNAILE Heavy-Duty 2-Pole DC Circuit Breaker is specifically engineered to safely channel and protect extreme DC currents up to 160 Amperes. Proudly bearing the dedicated 'PV' (Photovoltaic) designation and manufactured to the rigorous IEC 60947-2 industrial standard, it is the ultimate protective barrier for commercial solar arrays. Featuring precise polarity markings (+ / -) for safe DC wiring and an immense 15kA fault interruption rating, this breaker guarantees the operational continuity of high-stakes solar and battery infrastructure.
Technical Parameters
Device Category: | Industrial DC Circuit Breaker (Photovoltaic Dedicated) |
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Poles Configuration: | 2P (Direct Current +/- Isolation) |
Rated Current (In): | 160A (Massive heavy-duty DC capacity) |
Rated Operating Voltage (Ue): | DC 500V |
Short-Circuit Breaking Capacity (Icu=Ics): | 15,000A (15kA) |
Rated Impulse Withstand Voltage (Uimp): | 6kV (High surge/lightning resistance) |
Trip Curve Type: | Curve C |
Installation: | 35mm Standard DIN-Rail Mountable |
Standard Compliance: | GB/T 14048.2 / IEC 60947-2 (Industrial standard) |
1. Advanced Photovoltaic (PV) Protection Mechanisms
Extreme DC Arc Quenching: Interrupting a 160A DC fault generates highly destructive, sustained electrical arcs. This breaker is equipped with specialized, elongated arc chutes and powerful magnetic blowouts that aggressively stretch, cool, and extinguish DC arcs within milliseconds, preventing explosive panel fires.
6kV Lightning Surge Defense: The high Uimp rating (6kV) ensures that the internal circuitry can withstand severe transient voltage spikes, such as those caused by nearby lightning strikes on outdoor solar panels, protecting downstream inverters.
Massive Thermal Overload Tolerance: The robust internal bi-metallic elements are meticulously calibrated to sustain a continuous 160A draw without degradation, accurately responding only to genuine, dangerous thermal overloads in large battery banks.
2. Heavy-Amperage Architecture
Industrial-Grade Thermoplastic Shell: Housing a 160A current in a compact DIN-rail profile requires a shell capable of extreme heat dissipation. Constructed from premium V0-rated polymers, it remains structurally rigid and non-combustible under maximum continuous loads.
Oversized Copper Terminals: Features massive pure copper contact blocks and heavy-torque binding screws. This ensures a flawless, ultra-low resistance connection for the thick-gauge cables mandated in 160A DC commercial installations.
Strict Polarity Compliance: Clearly marked with '+' and '-' symbols on the fascia, guiding solar installers to wire the system correctly, ensuring the magnetic arc-blowout mechanism functions flawlessly during a fault.
3. Target Application Scenarios
Due to its rare 160A capacity and 500V DC rating, this industrial breaker is heavily specified by renewable EPC contractors for:
Commercial Solar Combiner Boxes: Serving as the heavy-duty main disconnect or high-amperage string protector before the central solar inverter.
Battery Energy Storage Systems (BESS): Crucial high-capacity isolation for large lithium-ion or lead-acid battery banks in commercial backup power facilities.
High-Power DC EV Fast Chargers: Acting as the primary DC internal protection switch inside Level 3 commercial charging stations.
Off-Grid Telecommunication Hubs: Managing and protecting the massive DC power required by remote, solar-powered cellular towers.
4. Global B2B Partnership with CHNAILE Factory
Direct Manufacturer Cost-Efficiency: Source high-amperage renewable switchgear directly from the factory floor. We eliminate distributor margins, providing highly aggressive pricing for your utility-scale solar bids.
Rigorous Industrial QA: Every 160A DC breaker is subjected to extreme thermal and magnetic calibration tests, guaranteeing 100% compliance with the IEC 60947-2 industrial standard before export.
Scalable OEM & Branding Solutions: We offer comprehensive OEM/ODM customization services, empowering international renewable energy brands to feature their logo on top-tier electrical components.