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Description
Fox 9kW K Series Single Phase Hybrid InverterFox 9kW K Series Single Phase Hybrid Inverter The Fox 9kW K Series Single Phase Hybrid Inverter is an advanced solution for residential and commercial solar systems that require high performance, reliability, and scalability. With a rated power of 9,000 W and four MPPT channels, it is designed to optimize energy production across multiple solar arrays, even in conditions of partial shading or varied orientations. The inverter boasts a high Euro
Fox 9kW K Series Single Phase Hybrid Inverter
The Fox 9kW K Series Single Phase Hybrid Inverter is an advanced solution for residential and commercial solar systems that require high performance, reliability, and scalability. With a rated power of 9,000 W and four MPPT channels, it is designed to optimize energy production across multiple solar arrays, even in conditions of partial shading or varied orientations. The inverter boasts a high Euro efficiency of 97.4%, ensuring minimal energy loss and maximum output. Its IP65 rating provides robust protection against environmental factors, making it perfect for outdoor installations.
Key Features
- Rated Power: 9,000 W – Provides ample power for both residential and commercial energy systems
- Quad MPPT Technology: Four MPPT channels allow for flexible array configuration and optimal energy harvesting, even with partial shading or multiple roof orientations
- IP65 Rated: Fully weatherproof and suitable for installation in outdoor environments
- High Efficiency: Euro efficiency of 97.4%, ensuring that your solar power system operates at maximum efficiency
- Integrated DC Switch: Provides added safety and control over the system by allowing easy DC disconnect
- Expandable Battery Capacity: Designed for easy integration with compatible energy storage systems, enabling future expansion of your solar energy storage needs
- Remote Monitoring: Monitor system performance via a web portal or smartphone app for real-time tracking and diagnostics
- Warranty: 5-year warranty for peace of mind and long-term reliability
Technical Specifications
- Rated Power: 9,000 W
- Min PPT Voltage: 80 V
- Max PPT Voltage: 500 V
- DC Startup Voltage: 75 V
- DC Shutdown Voltage: 75 V
- Max Input Voltage: 600 V
- Max DC Power: 13,500 W
- Max AC Power (5 Minutes): 9,000 W
- Surge AC Power (1 Second): 9,900 W
- Max DC Current: 64 A
- Max DC Inputs: 4
- Has DC Fuses: 0
- Connector: MC4
- Included Connectors: 8
- Euro Efficiency: 97.4%
- Transformer: None
- MPPT Quantity: 4
- Has Integrated DC Switch: Yes
- Warranty: 5 years
- Supplier Part No: FE-KH1-9.0
- Weight: 29 kg
Compatible with
- ECS2900 (1 Master + 1 Slave Minimum, up to 6 Slaves Maximum)
- ECS4100 (1 Master + 1 Slave Minimum, up to 6 Slaves Maximum)
- ECS4300 (1 Master + 1 Slave Minimum, up to 6 Slaves Maximum)
- ECS4800 (1 Master + 1 Slave Minimum, up to 6 Slaves Maximum)
- HV2600 (1 BMS + 2 HV2600 Minimum, up to 8 Maximum)
Applications
- Residential Solar Systems – Perfect for homes with higher energy needs and complex roof structures, where maximizing solar production is essential
- Commercial Solar Solutions – Designed for small to medium commercial installations requiring higher power output and flexibility
- Off-Grid Systems – Ideal for off-grid solar energy systems, ensuring reliable power management and scalability
- Energy Storage Systems – Easily integrates with battery storage systems to provide consistent power during the night or during grid outages
What’s Included in the Box?
- Fox 9kW K Series Hybrid Inverter
- CT Clamps and Meter
- User Manual
- Installation Guide
Important Notes
- This product must be installed by a qualified electrician/technician. All installations must adhere to local wiring regulations and standards.
- Solareon UK will not be held liable for any product malfunctions as a result of incorrectly installed systems.
Why Choose the Fox 9kW K Series Hybrid Inverter?
The Fox 9kW K Series Hybrid Inverter offers robust performance, versatility, and high-efficiency energy conversion, making it a top choice for homeowners and businesses looking to optimize their solar energy systems. Its quad MPPT technology, IP65 rating, and ability to expand battery storage make it perfect for those looking to maximize energy output in varying conditions. It also features integrated monitoring capabilities to track performance and ensure optimal operation.
Disclaimer:
All product information provided by Solareon UK is intended for general guidance only and may be subject to change or error. Solareon UK does not accept liability for any inaccuracies or omissions in the product specifications displayed. For accurate and detailed technical information, please refer to the manufacturer’s official datasheet available in the 'Downloads' section. We strongly advise confirming all critical details directly with the manufacturer prior to making purchasing or installation decisions.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 1099 reviews
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Product Reviews
★★★★★ 5
Most comfortable office chair this fluffy guy has ever sat in.
Color: Black, Style: Classic
This chair is incredibly comfortable—easily the most comfortable one I’ve ever sat in. At around 300lbs, I’ve struggled to find a chair that’s both supportive and spacious. Most options feel tight, with the armrests pressing into my hips. Not this one. If anything, I feel small in it—there’s plenty of room on either side. It’s like going from a cramped budget airline seat to first class on a full-service carrier.
The lumbar support is the best I’ve ever used. The materials are top-notch—everything from the base to the legs to the casters is metal (feels like steel). The casters themselves use what look like inline skate wheels and glide effortlessly across carpet—almost too well on hard surfaces, so you might want to consider a rug. Not a flaw, just something to keep in mind.
I’ve paid twice as much for chairs that felt half as good, so in my opinion, this is an excellent value. The faux leather looks great and the stitching appears durable. While it may not last as long as real leather or high-quality fabric, it should hold up for a reasonable amount of time.
Tilt functionality is basic—just two settings: upright or slightly reclined. Honestly, that’s all I need. If you’re looking for something to nap in, this might not be the chair for you. But for office work or gaming, it absolutely delivers all-day comfort.
For reference, I’m 5'8", and the headrest aligns perfectly with the back of my head. If you're 6'5", it might end up being more of a neck rest.
And I have to give a special shoutout to the included T-shaped hex wrench. It may sound silly, but this alone earns it a 5-star review from me. Every other chair I’ve bought includes those awful angled hex wrenches that make you slam your knuckles into the frame with every turn—often accompanied by some colorful language. Sure, I have my own tools, but finding where my wife hid them isn't always easy. A good-quality tool in the box? That’s thoughtful and appreciated.
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Reviewed in the United States on June 19, 2025
★★★★★ 5
Wide and comfortable office chair
Color: Black, Style: Classic, Color: Black, Style: Classic
It's made of very fine leather and in good quality. It has a pump to pump air to the back of the chair, so I can adjust the softness of the chair back. It's a very wide chair. Maybe the widest one I ever bought. I can only sit half of its space. It's very easy to install, the alignments are perfect. Its arm and height is adjustable. The wheels are advance ones which make it move through the floor smoothly. It looks an advance chair if you want an upgraded experience.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Comfortable Seating
Color: Black, Style: Classic
I honestly didn’t expect this chair to be this comfortable, but it has exceeded my expectations in every way. I sit at my desk for long hours every day, and the adjustable air-pump lumbar support has been a total game changer. I love that I can fine-tune the firmness depending on how my back feels that day. My lower back pain has noticeably improved since switching to this chair.The seat is wide, thick, and very supportive without feeling stiff, which makes long work sessions much more comfortable. The armrests are another big plus—they adjust in so many directions that I can always find the perfect position for typing, reading, or relaxing. The chair feels extremely sturdy and well built, and it gives me confidence knowing it supports higher weight without wobbling.Assembly was straightforward and took about 20 minutes. Overall, this chair feels premium, comfortable, and thoughtfully designed. I would absolutely recommend it to anyone looking for a reliable, all-day office chair.
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Reviewed in the United States on March 28, 2026
★★★★★ 5
Nice chair, w/ good cust support
Color: Black, Style: Classic
I apologize for length, but if I am doing a review for other people I assume you want to have as
much info as possible to make a decision. I feel this chair is for tall/fat/both so will review it as
such. At 6’4” @ 350lbs I fit into both, but reviewing based upon my body, yours is different so
adjust according.
TLDR – Would buy again, cavernous comfy chair with excellent customer support. Only
personal dings against chair are the back could be taller, but added back due to support.
Parts + Fit/Finish + Assembly:
The parts have some heft and feel solid as expected for a chair designed for heavy people.
Material and stitching look proper and I see no flaws. My box was beat to hell and ripped
opened at one point. Packing material took the hit and did its job as the items were unaffected.
The gas cylinder for the chair was missing and assume lost during shipping. (see customer
service). Assembly was standard office chair fare with simple and clear instructions.
Wheels / Height / Controls:
I normally wouldn’t think of mentioning wheels, but it’s different than expected. They are
good, maybe too good. A slight kick to push you back on wood floors sends you flying. The
height adjustment for me is good/standard. At full height my feet are flat on the floor and
where I would have the chair even if it went higher. My wife (5’6”) at that height is about 2.5
inches above the floor. Taller people than myself may wish for more height. Chair controls are
standard fare and operate smoothly
Seat:
It’s large and with the arms is there is nothing even close to your hip/legs. I can put my fist on
my hips and my arms barely touch the chair arms. This is why you are thinking of this chair, and
for that you will not be disappointed. The seat is not pillow soft and IMHO a little firmer than I
liked at first, but after a few days got broken in or I adjusted. I am a programmer + gamer so
spend a lot of time in the chair for hours on end. Comfortable and no complaints at all. Seat
depth for me is ~1” from my knee and good with roughly 20.5” usable butt/thigh length. That
should be fine for big/tall but may be a bit much for big/short. Measure your current chair and
decide from there.
Back:
The back lets the chair down a bit for me, the big/tall user, as the target seems to be big/short
users. The back ends just below my shoulder-line. That obviously means no leaning my head
back and the headrest is squarely on my shoulder blades. Not uncomfortable, but I’d prefer a
taller back. For me personally I’d like it to be extended 4”, but that would likely be an issue for
shorter users. I feel if the manufacturer increased the back by 2 inches it would be an ideal
compromise for all users. The chair has an inflatable lumbar support, which I did not use as I
personally find those uncomfortable. Also note the chair is designed for a more proper posture
with a 90deg back and not a more relaxed 100-110deg. Neither pro/con as personal
preference.
Arms:
The design of the arms being supported by rear only as mentioned earlier allow for an
abundance of hip/thigh space. This is an excellent ergonomic design with a potential caveat.
More stress will be placed upon the connection/joint. The joint for this chair is just shy of 4” so
seems beefy but only time will tell if it holds up to the lateral force of leaning on it while
reading. My chairs tend to last 5-7 years, due to the right arm feeling wobbly or the chair
leaning to the right. The arm adjustments provide a nice front/back of ~3”, from touching chair
back to 3” gap between chair/armrest. The height is similar and also moves the armrest
forward about another 2”. At full forward/up the armrest are higher than I like so should easily
accommodate taller users.
Customer Service
My chair was missing a part that I suspect was lost during shipping due to box condition. I
contacted them Sun (7/20/2025 @ 1201). At 2228 that night I received a response that they
acknowledged the issue and gave a tracking order for the missing part. The part arrived Mon
7/28 and gave a few days to test it out for review Fri (8/1). Obviously you don’t want an issue,
but if an issue arises how a company handles it tells you a lot IMHO on how they feel about
their product. I am very pleased with their handling of the matter.
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Reviewed in the United States on August 4, 2025
★★★★★ 5
Great Chair
Color: Black, Style: Classic
The durability, recline, noise, fit, and appearance, and stability of the chair were all fantastic. As someone of a shorter height, the backrest which is normally way to high or short for my head fits perfectly. The chair itself is easy to assemble and very comfortable to sit in for long hours. I tend do a lot of work at home and this chair feels very comfortable without feeling the need to get up. The chair looks great set up in my office and is honestly a great office chair. For moving around a room, the wheel guides across my carpet very smoothly with struggling unlike my previous chair which would need a heavy push. Not only that, the chair is noiseless which is a plus for people who get bothered by little sounds when moving around. The fit could honestly fit anyone of any size as the chair itself is quite wide and roomy for me. The seat is also made up of faux leather and feels well stitched and quite durable.
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Reviewed in the United States on April 4, 2026