PV Isolator for Solar Systems | 1200V DC, IP66 Rated

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Trusted PV Isolator Solutions for Global Solar Installations

Trusted PV Isolator Solutions for Global Solar Installations

As a leading electrical manufacturer since 1992, ZHNYU ELECTRIC delivers premium PV isolators engineered for photovoltaic systems worldwide. Our PV isolator series ensures safe disconnection and maintenance of solar arrays, meeting the rigorous demands of utility-scale, commercial, and residential installations. With 34 years of production expertise and ISO9001, CE, and CCC certifications, we guarantee reliability and compliance with RoHS standards. Our isolators are tested for high DC voltages up to 1200V and rated currents up to 63A, ensuring robust performance in extreme temperatures ranging from -25°C to +55°C. Featuring IP66-rated enclosures, they withstand harsh environmental conditions, making them ideal for coastal areas and dusty terrains common in the Middle East and Southeast Asia.
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Case Study

Enhancing Safety in a Chilean Solar Farm

In 2023, a 150MW solar plant in the Atacama Desert faced frequent fire risks due to high temperatures and unreliable disconnects. They adopted our PV isolators, which provided galvanic isolation and clear visual indication. The result was a 30% faster response to fault conditions and zero safety incidents over two years. Our isolators withstood severe UV radiation and thermal cycling, ensuring continuous operation. This case proved the reliability of our products in extreme climates, reinforcing our reputation for delivering durable, high-performance solutions.

Improving Maintenance Efficiency for a UK Rooftop Installer

A UK-based commercial installer servicing over 200 rooftop installations struggled with inconvenient fuse replacements and system downtime. Switching to our PV isolators with tool-free wiring and built-in cable glands reduced installation time by 20 minutes per unit. Over a year, this translated to a 12% increase in project throughput and a 98% customer retention rate. The safety features, such as padlockable handles, impressed inspectors, leading to quicker approvals and faster grid connections.

Reliability in a Bangladesh Agricultural Solar-Powered Irrigation Project

For a rural development project in Bangladesh, our PV isolators were installed in 500 solar-powered irrigation pumps. The equipment faced high humidity and salt fog. After 18 months, there were no reported failures, and the system operated at 99.5% uptime. Our local distributor praised the rapid logistics and technical support, which helped to reduce project implementation time by 40% compared to competitive products.

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ZHNYU ELECTRIC has consistently delivered excellence in low-voltage electrical components since 1992. Our state-of-the-art factory spans 10,000 square meters and is equipped with over 100 advanced production machines, enabling us to achieve an annual output of over 3 million units. We pride ourselves on vertical integration, from rigorous raw material selection to in-house tooling and molding, ensuring every PV isolator meets stringent international standards. The manufacturing process involves precision stamping, sophisticated welding, and automated testing that simulates real-world electrical and thermal stresses. 

Frequently Asked Questions

What is the primary function of a PV isolator in a solar system?

A PV isolator provides a safe means to break the DC circuit from photovoltaic panels to the inverter or combiner box, enabling maintenance and ensuring safety during emergencies. It acts as a load-breaking switch, disconnecting the current flow to prevent arc hazards and protect personnel.
Our PV isolators are available for rated DC voltages up to 1200V and rated currents ranging from 16A to 63A, covering a wide range of residential to utility-solar installations. We also offer custom configurations to meet specific project requirements, ensuring optimal compatibility.
Our isolators incorporate flame-retardant materials and a robust enclosure with an IP66 rating, providing complete protection against dust and water jets. They are designed to operate in temperatures from -25°C to +55°C without performance degradation, and they feature special arc-extinguishing chambers that prevent electrical arcing even at high DC voltages.
Absolutely. Our PV isolators feature conventional fixing centers and screw terminals that are compatible with standard DIN rails, allowing for straightforward replacement or installation. We provide different pole configurations (1P, 2P, 4P) and have options for lockable handles and auxiliary contacts, making integration into any solar setup simple and efficient.

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Customer Testimonials

David Miller
High Performance and Reliable Maintenance

"We ordered 2,000 units of ZHNYU PV isolators for a large solar project in Texas. The quality exceeded our expectations; installation was straightforward and the visible break feature provided required safety for maintenance teams. We experienced zero site failures during the first year. Technical support was efficient and responsive.

Maria Santos
Excellent Quality and Cost-Effective Solution

As a distributor in the Netherlands, we have been selling ZHNYU PV isolators for over three years. Their consistent quality and competitive pricing make them our top choice. The after-sales support is impressive, with quick replacement policies and spare parts availability. Our customers appreciate the clear instructions and robust construction.

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Advanced Safety Features for Comprehensive Protection

Advanced Safety Features for Comprehensive Protection

Our PV isolators are engineered with multiple safety features that safeguard both personnel and equipment. Each unit includes a visible break gap that clearly indicates the open state, preventing accidental operation during maintenance. Integrated padlockable handles allow for secure locking during service, reducing the risk of unauthorized or unintended switching. The isolators are equipped with an arc extinguishing system that rapidly quenches arcs generated when breaking DC circuits under load, minimizing contact erosion and extending the product's lifespan. Designed for high DC voltage applications up to 1200V, our isolators incorporate double-break contacts in each pole to ensure reliable interruption.
Industry-Leading Durability and Environmental Resilience

Industry-Leading Durability and Environmental Resilience

Understanding that solar installations are often exposed to harsh environmental conditions, we design our PV isolators to withstand extreme weather and temperature variations. Our enclosures are constructed from UV-stabilized and impact-resistant thermoplastic, offering an IP66 rate for protection against dust ingress and powerful water jets. The internal components are protected against corrosion through gold-plated contacts and stainless steel screws, ideal for coastal installations where salt mist is prevalent. We test our isolators for resistance to dry heat – up to 85°C – and humid heat cycles, compliant with IEC 60068-2-2 and -2-30 standards.
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ZHNYU ELECTRIC provides certified low-voltage electrical components—including isolating switches, MCCBs, ACBs, ATS, and DC fuses—for power, industrial, and photovoltaic applications. ISO9001, CE, CCC, RoHS compliant. Serving 60+ countries. Partner with us today.ZHNYU ELECTRIC, founded in 1992, is a professional manufacturer integrating R&D, production and sales of low-voltage electrical components and accessories.

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