ZJ Beny BYA-63 Series Weatherproof AC Isolation Switch, 1 or 3 Poles, 35/63A
$9.60 – $13.60
MOQ: 1 carton Packing: 20pcs/carton
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Description
The ZJ Beny BYA-63 is a rugged weatherproof AC isolation switch designed for safely disconnecting solar inverters on the AC side of a PV system.
It comes in single-pole (1P) and three-pole (3P) versions, with current ratings ranging from 20A up to 63A. The switch is rated for 250–440 VAC operation, matching typical single or three-phase inverter outputs. Its IP66-rated polycarbonate enclosure provides complete protection against dust and powerful water jets. The UV-stable, flame-retardant housing ensures long-term durability under harsh Australian sun. A clear ON/OFF marking and pad-lockable handle add safety, while the base-mounted design offers extra wiring space for a neat installation.
ZJ Beny provides a comprehensive installation guide and datasheet for easy setup; the base-mounted terminals make wiring straightforward and allow bottom/top conduit entries for flexible cable routing.
In practice, engineers specify the BYA-63 for its compact footprint and compliance with standards, contractors value the quick lockable installation, and homeowners enjoy the peace of mind from a durable, long-life safety switch.
ZJ Beny BYA-63 Series Weatherproof AC Isolation Switch
- Poles: Available in single-pole (1P) and three-pole (3P) versions (A two-pole version is also offered for split-phase systems).
- Current Ratings: 20A, 35A, or 63A (choose the model that matches your inverter output).
- Voltage: Rated for AC operation up to 440VAC, compatible with various residential and commercial solar inverter outputs.
- Protection: Fully IP66 rated enclosure – dust-tight and waterproof against heavy jets of water. Ideal for outdoor use in all weather.
- Mounting: Base-mounted design provides extra wiring space and easier termination. Multiple 25mm conduit entries (top & bottom) allow tidy cable management. Can be mounted on wall surface or recessed for a clean installation.
- Standards & Certifications: Compliant with IEC 60947-3 (AS/NZS 60947.3) for AC switches. Approved by CE, RCM and SAA for use in Australia.
- Additional Features: High-visibility ON/OFF indicator and padlockable handle for added safety. Four screws securely lock the cover. The label “A.C. ISOLATOR” and molded “ON/OFF” lever markings ensure clear operation.
Key Features of
- Outdoor-ready AC isolation switch: IP66-rated waterproof/dustproof enclosure for harsh environments.
- Solar inverter compatible: Designed for AC-side disconnect in solar PV systems (up to 440 VAC).
- Extra wiring room: Base-mount design provides more space for terminations and conduit entries.
- Multiple configurations: Choose 1P or 3P switch, and 35A or 63A current rating, to match system needs.
- Wide current range: Supports 20A through 63A to fit small to large inverter outputs.
- Durable housing: UV-stable, flame-retardant polycarbonate cover prevents sunlight damage and fire spread.
- Easy installation: Flexible mounting (surface or flush) and clear labelling speed up on-site setup.
Main Benefits
Engineers: The BYA-63 AC isolation is fully compliant with IEC/AS standards and has a compact design. Engineers appreciate the precise current/voltage ratings and the thorough documentation (datasheet and installation guide) that simplify specification and design. Clear ON/OFF labeling and lockout capability make it easy to meet safety requirements on schematics and site plans.
Contractors: This switch installs quickly and reliably. Its weatherproof, UV-resistant build means no extra protective housing is needed outdoors. The base-mounted terminals and extra conduit entries cut wiring time and reduce errors. Contractors can match it to any inverter’s AC disconnect requirement, and the lockable handle helps avoid service callbacks.
Homeowners: For a homeowner’s solar setup, the BYA-63 offers long-term durability and simple safety. Its tough enclosure stands up to sun, rain, and dust without rust or fading. In an emergency or service visit, the switch provides a clear and complete shutdown of the PV system. Knowing the isolator is built to strict standards gives installers—and homeowners—peace of mind.
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 (Zhejiang Benyi Electric Co., Ltd) is a leading Chinese manufacturer of PV and electrical switchgear. They specialize in AC and DC isolator switches, circuit breakers, surge protectors, and related products for solar and EV charging systems. With decades of industry experience, ZJ Beny is known for quality and certification.
As an authorized ZJ Beny isolator supplier in Australia, Solar Rains offers their full range of isolators and accessories. Installation manuals and datasheets (the ZJ Beny isolator installation guide) are readily available to help installers fit the switch correctly. ZJ Beny also offers complementary isolator covers and enclosures to suit complex sites – their protective covers are designed to integrate seamlessly with these isolator switches.
Yes – it’s built for Aussie outdoor conditions. The unit’s IP66 enclosure means it’s dust-tight and can withstand powerful water jets (even storms). The housing is UV-resistant and corrosion-proof, so it handles sun, rain, and salt air without issues.
The BYA-63 works with virtually any grid-tie inverter AC output. It’s rated for 250–440VAC and up to 63A, covering common 230/240VAC single-phase and 400/415VAC three-phase solar inverters. In short, if your inverter’s AC side falls in this range, the BYA-63 is compatible. The manufacturer specifically notes it “can be installed at [a] solar inverter AC side”.
Yes. Each isolator comes with a datasheet and clear instructions. ZJ Beny provides an installation guide for the BYA-63, and the switch’s base-mounted design is very installer-friendly. Wiring is made easier with top/bottom conduit knockouts, and the handle’s OFF position and cover screws ensure the unit is properly secured during setup.
The BYA-63 is IP66 rated. This means it’s completely dustproof and protected against powerful water jets. In practice, rain or hosing won’t enter the enclosure, and no dust can accumulate inside. For Australian installations, this protects the isolator from the elements (UV, dust storms, heavy rain, etc.), extending the switch’s life and reliability.
Absolutely. The isolator is stocked in cartons of 20 units. The minimum order is 1 carton (20 pieces). We welcome bulk or project orders – just contact us for a quote on larger quantities.
| Dimensions and Weights | |
|---|---|
| SKU | ZJ-BYA-63 1P35A |
| Weight | 9.8 kg |
| Dimensions | 48 x 37 x 21 cm |
| Dimensions and Weights | |
|---|---|
| SKU | ZJ-BYA-63 3P35A |
| Weight | 11 kg |
| Dimensions | 48 x 37 x 21 cm |
| Dimensions and Weights | |
|---|---|
| SKU | ZJ-BYA-63 1P63A |
| Weight | 15.2 kg |
| Dimensions | 58 x 39 x 28 cm |
| Description | BYA-63 (1 pole 35A) | |
| Pole | 1Pole | |
| Rated operational voltage (Ue) | 250VAC | |
| Rated operational current (Ie) | 35A | |
| Standard | IEC60947.3 AC-22A | |
| Rated frequency | 50Hz | |
| Rated insulation volateg (Ui) | 1000V | |
| Rated impulse withstand voltage (Uimp) | 2.5kV | |
| Short time withstand current (Icw) | 750A | |
| Short circuit making capacity (Icm) | 1058A | |
| Free air thermal current (Ith) | Same as Ie | |
| Enclosed thermal current (Ithe) | Same as Ie | |
| Dielectric properties | 800V | |
| Mechanical life | 10000 | |
| Electrical life | 1500 | |
| Protection degree | IP66 | |
| Conduit entries | 4xM25 | |
| Padlock max diameter | 6mm | |
| Max. cable size (Mains) | 25mm2 | |
| Max. cable size (N/E) | 16mm2 | |
| Approved | SAA, RCM, CE | |
| Rated operation current
(AS3133) |
Locked rotor 3 Ø, “M” rating | Locked rotor 1 Ø, “M” rating |
| 120A for 20A | 140A for 20A | |
| 160A for 35A | 180A for 35A | |
| 200A for 63A | 200A for 63A | |
| Description | BYA-63 (1 pole 35A) | |
| Pole | 1Pole | |
| Rated operational voltage (Ue) | 250VAC | |
| Rated operational current (Ie) | 35A | |
| Description | BYA-63 (3 pole 35A) | |
| Pole | 3Pole | |
| Rated operational voltage (Ue) | 250VAC | |
| Rated operational current (Ie) | 35A | |
| Standard | IEC60947.3 AC-22A | |
| Rated frequency | 50Hz | |
| Rated insulation volateg (Ui) | 1000V | |
| Rated impulse withstand voltage (Uimp) | 2.5kV | |
| Short time withstand current (Icw) | 750A | |
| Short circuit making capacity (Icm) | 1058A | |
| Free air thermal current (Ith) | Same as Ie | |
| Enclosed thermal current (Ithe) | Same as Ie | |
| Dielectric properties | 800V | |
| Mechanical life | 10000 | |
| Electrical life | 1500 | |
| Protection degree | IP66 | |
| Conduit entries | 4xM25 | |
| Padlock max diameter | 6mm | |
| Max. cable size (Mains) | 25mm2 | |
| Max. cable size (N/E) | 16mm2 | |
| Approved | SAA, RCM, CE | |
| Rated operation current
(AS3133) |
Locked rotor 3 Ø, “M” rating | Locked rotor 1 Ø, “M” rating |
| 120A for 20A | 140A for 20A | |
| 160A for 35A | 180A for 35A | |
| 200A for 63A | 200A for 63A | |
| Description | BYA-63 (3 pole 35A) | |
| Pole | 3Pole | |
| Rated operational voltage (Ue) | 250VAC | |
| Rated operational current (Ie) | 35A | |
| Description | BYA-63 (1 pole 63A) | |
| Pole | 3Pole | |
| Rated operational voltage (Uₑ) | 250VAC | |
| Rated operational current (Iₑ) | 63A | |
| Standard | IEC60947.3 AC-22A | |
| Rated frequency | 50Hz | |
| Rated insulation volateg (Uᵢ) | 1000V | |
| Rated impulse withstand voltage (Uᵢₘₚ) | 2.5kV | |
| Short time withstand current (I꜀ʷ) | 750A | |
| Short circuit making capacity (I꜀ᵐ) | 1058A | |
| Free air thermal current (Iᵗʰ) | Same as Ie | |
| Enclosed thermal current (Iᵗʰₑ) | Same as Ie | |
| Dielectric properties | 800V | |
| Mechanical life | 10000 | |
| Electrical life | 1500 | |
| Protection degree | IP66 | |
| Conduit entries | 4xM25 | |
| Padlock max diameter | 6mm | |
| Max. cable size (Mains) | 25mm2 | |
| Max. cable size (N/E) | 16mm2 | |
| Approved | SAA, RCM, CE | |
| Rated operation current
(AS3133) |
Locked rotor 3 Ø, “M” rating | Locked rotor 1 Ø, “M” rating |
| 120A for 20A | 140A for 20A | |
| 160A for 35A | 180A for 35A | |
| 200A for 63A | 200A for 63A | |
| Description | BYA-63 (1 pole 63A) | |
| Pole | 3Pole | |
| Rated operational voltage (Uₑ) | 250VAC | |
| Rated operational current (Iₑ) | 63A | |
josh –
solid product, works well
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Alexis Stephen –
Easy online shopping, they answered my questions quickly and helped with the installation
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Tony R. –
No issues at all, works perfectly and great service
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Dave –
Nice service, decent product. Just had some delivery delay
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