ZJ Beny BYSS Series Non-polarity DC Isolator Switch, 35A at 1500V or 50A at 1000V
$36.00
MOQ: 1 carton Packing: 16pcs/carton
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Description
The ZJ Beny BYSS Series is a non-polarity DC isolator switch engineered for high-voltage photovoltaic (PV) systems. The BYSS-50 model supports up to 1500V DC at 35A (or 50A at 1000V), making it ideal for disconnecting direct current safely between solar panels and inverters. This is a true DC isolator purpose-built for solar applications. Its IP66-rated, UV-resistant enclosure offers robust protection against weather and sunlight.
ZJ Beny BYSS Series
The BYSS Series Non-polarity DC Isolator Switches are designed for 1000V and 1500V commercial PV systems. The BYSS-50 enables non-polar wiring, allowing both “+” and “–” leads to be connected interchangeably. This makes installations simpler and safer. Rated at 35A (1500V) or 50A (1000V), the BYSS-50 meets the increasing demands of large-scale PV setups. It complies with IEC/AS 60947-3:2018 (DC-PV2 category), meeting modern solar compliance requirements.
Key Features of ZJ Beny BYSS Series
- Non-polarity DC isolator: Accepts interchangeable “+” and “–” wiring.
- High ratings: 35A at 1500V DC / 50A at 1000V DC.
- IP66 weatherproof enclosure: UV-resistant polycarbonate housing for outdoor use.
- Fast arc suppression (<3ms): Enhances system safety.
- Standards-compliant: Meets IEC/AS 60947-3 (DC-PV2).
- Lockable rotary handle: Improves maintenance safety.
- Isolator cover compatible: Use with aluminum protective cover model ZJ-BYC-555.
- Flexible mounting: Horizontal/vertical orientation; suitable for combiner boxes and PV switchboards.
Main Benefits
For System Design Engineers:
- Accurate technical specs help simplify PV design.
- Non-polarity makes string layout optimization easier.
- Fully compliant with IEC/AS60947-3 standards.
For EPC Contractors:
- Saves time on installation with universal polarity.
- IP66-rated housing suits all-weather deployments.
- Lockable switch enhances safety and ease of maintenance.
For Distributors:
- Reliable product from a globally recognized brand.
- High market demand for certified, genuine DC isolators.
- Attractive pricing (~AU$36) and in-stock availability.
For Homeowners:
- Enables quick, safe DC shutoff during emergencies.
- UV and moisture protection ensure long service life.
- Large red handle is intuitive and easy to operate.
Operation Life
The ZJ Beny BYSS-50 is engineered for long-term performance in demanding solar environments. Its mechanical and electrical lifespan makes it one of the most durable DC isolator switches available for high-voltage PV systems:
Mechanical Life: ≥10,000 operations
The switch is rated for over ten thousand manual ON/OFF operations without mechanical failure, making it suitable for frequent use during inspections, maintenance, or emergency shutdowns.
Electrical Life: ≥1,000 load-breaking operations
When switching under full rated DC load (up to 1500V), the isolator maintains electrical integrity for at least one thousand cycles. This ensures stable, long-lasting performance even under high-voltage stress.
These ratings highlight the superior durability and long-term reliability of the BYSS-50 compared to standard DC isolators. For system designers, installers, and EPC contractors, this means lower maintenance, fewer replacements, and extended service life in both residential and commercial PV systems.
Environmental Ratings
Designed for extreme Australian weather, the BYSS-50 features robust environmental protection for safe and reliable operation outdoors:
- IP66-rated enclosure: Completely dust-tight and protected against powerful water jets. This ensures uninterrupted performance during heavy rain, storms, and dusty conditions.
- UV-Resistant Housing: The polycarbonate enclosure is engineered to resist prolonged UV exposure, preventing degradation or discoloration in high-sun environments.
- Flame-Retardant Body: Constructed from fire-resistant materials, the isolator meets strict safety codes and helps reduce fire risks – a vital consideration for rooftop PV installations.
- Operating Temperature Range: -40°C to +85°C. This wide temperature tolerance allows the isolator to function reliably from freezing alpine regions to scorching desert heat.
These environmental ratings make the BYSS-50 a perfect fit for rooftop or ground-mounted solar systems in Australia. Whether installed on a coastal home or a commercial solar farm, it offers dependable performance in harsh, real-world conditions.
Caveat: The product description and datasheet on this page may not be the most updated version. Please refer to the user manual coming with products if there are conflicts.
ZJ Beny
ZJ Beny is a leading manufacturer of protective DC components for solar energy systems. Renowned for their safety-first and innovation-driven approach, ZJ Beny produces a range of isolator switches, including the BYSS and BYT DC series and BYA AC switches.
These are trusted by inverter brands and PV system installers for their durability and performance. Solar Rains is proud to stock ZJ Beny’s core products, reinforcing their strong presence in the Australian solar market.
A DC isolator safely disconnects the solar panel array from the inverter. Installed between panels and inverter, it allows safe shutdowns during maintenance or emergencies. The BYSS-50 is a high-voltage solar DC isolator switch, offering up to 1500V isolation.
Yes. It is compatible with protective covers such as ZJ-BYC-555. These isolator covers protect from dust, UV, and mechanical impact when installed outdoors.
Non-polarity means you can wire either positive or negative to any terminal. This reduces errors and simplifies combiner box installations. Despite this flexibility, the isolator still meets strict DC-PV2 safety standards.
Datasheets are available on the Solar Rains product page or by contacting our team. The file includes voltage, current, dimensions, and wiring diagrams.
ZJ Beny isolators are widely trusted in the industry. Related models like BYT-32 1200V have received 5-star reviews. While BYSS-50 is a newer release, it inherits the same engineering quality and is expected to perform just as reliably.
| Dimensions and Weights | |
|---|---|
| Weight | 15 kg |
| Dimensions | 56 x 44 x 24 cm |
| Type | BYSS-50, BYSS.1-50, BYSS.2-50 | ||||||
| Function | Isolator, Control | ||||||
| Standard | IEC60947-3, AS60947.3 | ||||||
| Utilization category | DC-PV2 / DC-21B | ||||||
| Type | BYSS-50, BYSS.1-50, BYSS.2-50 | ||||||
| Function | Isolator, Control | ||||||
| Standard | IEC60947-3, AS60947.3 | ||||||
| Utilization category | DC-PV2 / DC-21B | ||||||
| Pole | 4P | ||||||
| Rated frequency | DC | ||||||
| Rated operational voltage (Uₑ) | 500V, 600V, 800V, 1000V, 1200V, 1500V | ||||||
| Rated insulation voltage (Uᵢ) | 1200V | ||||||
| Conventional free air thermal current (Iₜₕ) | // | ||||||
| Conventional enclosed thermal current (Iₜₕₑ) | Same as Iₑ | ||||||
| Rated short-time withstand current (Iₓₛ) | 1.5kA, 1s | ||||||
| Rated short-time making capacity (I𝚌ₘ) | 2kA | ||||||
| Rated conditional short-circuit current (I𝚌𝚌) | 3kA | ||||||
| Rated impulsed withstand voltage (Uᵢₘₚ) | 8.0kV | ||||||
| Overvoltage category | II | ||||||
| Suitability for isolation | Yes | ||||||
| Polarity | No polarity, “+” and “–” polarities could be interchanged. | ||||||
| Service Life/Cycle Operation | |||||||
| Mechanical | 10000 | ||||||
| Electrical | 1000 | ||||||
| Installation Environment | |||||||
| Ingress Protection | Enclosure | IP66 | |||||
| Switch body | IP20 | ||||||
| Storage Temperature | -50°C ~ +90°C | ||||||
| Operation Temperature | -40°C ~ +85°C | ||||||
| Mounting Type | Vertically or horizontally | ||||||
| Pollution degree | 3 | ||||||
| Suitable environment | Outdoor / Indoor | ||||||
Egor –
Honestly, it was just the right fit for my needs. I needed a good DC isolator switch for my setup and this one fits perfectly
Leah –
The isolators themselves are solid, easy to install, clearly labelled, and compact
Clayton H –
Customer service was super helpful when I needed assistance. Good product!
Ben Adam –
Having non-polar isolators makes wiring simpler, especially when we’re working under time pressure. Solar Rains always delivers fast and has proper compliance info, which makes our documentation much smoother. Top product, top service
matthew b –
Fast response, best deal in town. Highly recommend!
Joe –
Good switch that seems durable