Noark Circuit Breakers

Reliable Noark DC Circuit Breakers for Solar Arrays

Safeguard your off-grid electrical system with high-performance Noark DC circuit breakers. Designed specifically for demanding solar photovoltaic (PV) applications, these non-polarised 2-pole breakers provide essential overcurrent and short-circuit protection for caravans, RVs, 4WDs, and marine vessels. Whether you are building a new off-grid solar array or upgrading an existing setup, installing robust circuit protection is critical for long-term safety and system reliability.

The Importance of Non-Polarised DC Breakers

When designing a solar power system, selecting the correct breaker type is paramount. The Noark range features non-polarised DC circuit breakers, which are highly recommended for solar PV installations. Unlike polarised alternatives, non-polarised breakers are designed to safely interrupt fault currents flowing in either direction. This bidirectional capability is crucial in solar arrays where reverse currents can occur due to wiring faults, shading issues, or battery back-feed, offering an additional layer of security for your valuable equipment.

Comprehensive 360V 2-Pole Protection

Our curated selection of Noark breakers features a 360V DC rating, making them ideal for modern high-voltage string configurations. The 2-pole design ensures that both the positive and negative lines are isolated simultaneously during a fault or manual disconnect, ensuring complete isolation of your solar input.

Available current ratings include:

• Low to Medium Output: 10A, 16A, 20A, and 25A breakers tailored for single panels or parallel arrays on smaller camper trailers and 4WD canopies.
• High Capacity Output: 32A, 40A, 50A, and 63A models built for extensive multi-panel arrays on large caravans, motorhomes, and commercial off-grid tiny homes.

Why Choose Noark for Australian Conditions?

Touring across Australia exposes your electrical gear to extreme temperatures, heavy vibrations, and relentless dust. Noark is a globally recognised manufacturer of low-voltage electrical components, known for their rigorous testing and robust build quality. Their solar PV breakers are constructed with heat-resistant materials and precise internal arc-extinguishing mechanisms. When a DC fault occurs, the internal components work rapidly to quench the electrical arc, preventing thermal damage and reducing fire risks. This level of durability makes Noark an excellent choice for mobile applications like off-road caravans and marine environments where component failure is not an option.

Integrating Your Circuit Protection

Proper installation involves housing your Noark breakers in suitable DC circuit breakers and enclosures to protect them from dust, moisture, and accidental contact. A well-designed system will place the solar breaker between your off-grid solar panels and the solar charge controller, providing a convenient isolation point for maintenance. Incorporating these breakers into your wider circuit protection strategy ensures your system operates safely under harsh conditions.

Compatibility Notes

• Sizing: Always size your DC solar circuit breaker based on the short-circuit current (Isc) of your solar array, factoring in an additional safety margin (typically 1.25 to 1.56 times the Isc depending on local wiring standards).
• Voltage Limits: Ensure the open-circuit voltage (Voc) of your combined solar panel string does not exceed the 360V maximum rating of the Noark breaker.
• Wiring: These 2-pole breakers feature sturdy screw terminals designed for secure connections with standard solar cable. Ensure correct wire stripping and termination to prevent high-resistance joints.
• Mounting: Noark circuit breakers are DIN rail mountable, making them compatible with standard electrical enclosures and switchboards used in RV and off-grid builds.

Invest in reliable system safety today. As an Australian family business with over a decade of experience in off-grid power, we are committed to providing high-quality products and expert advice. Backed by our dedicated before and after-sales support and fast dispatch, you can build your 12V, 24V, or 48V electrical system with complete confidence. Upgrade your solar protection with a Noark DC circuit breaker and secure your off-grid adventures.