Isolator PRODUCTS AT SOLAR RAINS

What Is a Solar Isolator and Why Is It Important?

A solar isolator is a crucial safety component in every solar power system. It is a manually operated switch that ensures the disconnection of electrical current, typically between a photovoltaic (PV) array and the inverter. By isolating power sources during maintenance or emergency situations, solar isolators protect technicians, homeowners, and property.

Solar isolators are not just safety recommendations—they are mandatory under Australian electrical standards. Every compliant solar system must include both AC isolators and DC isolators, correctly rated and installed in appropriate positions.

Whether you’re an installer working on residential rooftops or large-scale commercial systems, choosing the right isolator ensures long-term safety, regulatory compliance, and system performance.

Key Benefits of Using Solar Isolators

• Enhanced safety: Allows quick shutdown of PV systems during maintenance or emergencies.
• Regulatory compliance: Required by AS/NZS 5033 standards in solar installations.
• System protection: Prevents backflow of current and potential damage to other system components.
• Versatile applications: Suitable for residential, commercial, and industrial solar arrays.

At Solar Rains, we offer a curated selection of high-quality solar isolators tailored for the Australian solar market.

Types of Solar Isolators Offered at Solar Rains

Based on our current product range on SolarRains.com.au, we supply the following types of isolators:

1. DC Isolators

DC isolators are designed to interrupt the direct current generated by solar panels before it reaches the inverter. They are typically installed on rooftops and are rated to handle high voltages (up to 1500V) and continuous current. Proper enclosure and weatherproof design are essential due to their external placement.

2. AC Isolators

AC isolators are used to disconnect the alternating current output from the inverter before it enters the main switchboard. They are usually mounted next to the inverter and serve as an extra layer of protection when servicing or upgrading the system.

3. Weatherproof Isolators with Enclosures

Some isolators come pre-mounted in IP66-rated enclosures with red rotary knobs for easy shutdown. These isolator cover solutions are ideal for installations exposed to outdoor conditions, ensuring safety, durability, and clear identification.

We focus on isolators that meet the Australian Electrical Standards and are proven to perform under Australia’s harsh environmental conditions.

ZJ Beny – A Trusted Name in Solar Isolators

At Solar Rains, we supply isolators from ZJ Beny, a globally recognised manufacturer of PV protection equipment.

About ZJ Beny Isolators

• High voltage capacity: Models like the BYSS Series DC isolator can support up to 1500V DC and continuous current ratings of 35A or 50A, making them suitable for both residential and commercial PV systems.
• Durable enclosures: The isolators are available in pre-installed weatherproof housings (IP66-rated), designed for long-term outdoor use.
• Non-polarity switching: Some models support non-polarised operation, offering greater installation flexibility.

With fast availability, competitive pricing, and Australian compliance, ZJ Beny isolators are a reliable choice for installers and system designers alike.

Key Considerations When Choosing a Solar Isolator

Selecting the right solar isolator requires careful evaluation of your project needs and technical specifications:

1. Voltage and Current Ratings

Ensure the isolator can handle the voltage (up to 1000V or 1500V DC) and the current (e.g., 35A or 50A) produced by the PV array. Undersizing isolators can lead to overheating and safety hazards.

2. AC or DC Configuration

Choose the right isolator type based on where it will be installed. DC isolators are connected between the PV modules and inverter; AC isolators are placed after the inverter before the switchboard.

3. Mounting Location and IP Rating

For rooftop or outdoor installations, select models with IP66-rated isolator covers that offer protection against dust, rain, and UV exposure. Indoor installations may require simpler enclosures.

4. Compliance with Australian Standards

All isolators must comply with AS/NZS 5033 and other national electrical codes. Solar Rains only supplies products that meet or exceed these standards.

5. Ease of Installation

Rotary switches with clear markings, compact designs, and pre-wired configurations reduce installation time and errors. Installers should also consider the available space and panel orientation.

Frequently Asked Questions (FAQs)

1. Do I need both AC and DC isolators in my solar system?
   Yes. According to Australian regulations, you must install DC isolators between the solar panels and the inverter, and AC isolators between the inverter and the grid connection point.
2. Where should I mount a DC isolator?
   DC isolators are typically installed close to the PV array, often on the roof. They should be housed in weatherproof enclosures and be easily accessible for emergency shutdowns.
3. What IP rating should a rooftop isolator have?
   For outdoor use, a minimum of IP66 is recommended. This ensures resistance to water, dust, and harsh environmental conditions.
4. What makes ZJ Beny isolators reliable?
   ZJ Beny isolators offer high voltage tolerance, robust construction, and are engineered specifically for solar applications. They also comply with global safety standards and are tested for long-term use.
5. Can I install a solar isolator myself?
   No. Installation must be performed by a licensed electrician or accredited solar installer to ensure compliance and safety.