Fortress Power 200A Energy Storage System Components - Solar Equipment | Portlandia Electric Supply
Fortress Power 200A Energy Storage System Components - Solar Equipment | Portlandia Electric Supply
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Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP

Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP

$3,879.81 USD
$ $3,879.81 USD
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In Stock

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9+ sold

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Unlimited lifetime support, always available.

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Fortress Power Avalon Smart Energy Panel (SEP) — 200A service-entrance

The Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP is a powerful and dependable automatic transfer solution designed to seamlessly manage backup power transitions in residential, commercial, and renewable energy systems. Whether you’re integrating solar storage, generators, or hybrid systems, this advanced transfer switch delivers high-capacity performance while simplifying installation, providing safe power switching, and ensuring uninterrupted service when you need it most.

Fortress Avalon Smart Energy Panel whole-home backup ko simple banata hai: integrated automatic transfer switch, manual bypass, AC-coupling & EV/generator inputs ke saath aapko alag critical-loads panel, ATS, ya AC combiner ki zarurat nahi padti. [datasheet]

Key features

  • 200A pass-through, split-phase 120/240 V; service-entrance rated
  • Smart load management: up to 12 single-phase (120 V) ya 6 split-phase (240 V) circuits
  • 50 A provisions for EV charger, AC-coupled inverter, aur generator inputs
  • NEMA 3R (outdoor-rated), LCD + LED status, Wi-Fi/Ethernet/Bluetooth via system app
  • Avalon Hybrid Inverter & Battery stacks ke saath plug-and-play whole-home ESS

Specifications

Fortress Avalon Smart Energy Panel — specification box
Electrical
AC voltage / feed-in 120/240 V split-phase, 60 Hz
Current rating 200 A pass-through
Service entrance Yes; 100–200 A main OCPD options; non-RGM meter std., RGM optional
Smart load control 12× 120 V or 6× 240 V circuits; up to 50 A each; auto/scheduled/manual modes
Generator / EV / AC-coupling Dedicated smart-load provisions up to 50 A
Short-circuit rating Max input SCC 10/15/25 kA (jurisdiction/breaker dependent)
Mechanical & environment
Enclosure NEMA 3R (indoor/outdoor)
Dimensions (W × H × D) 22.2″ × 35.4″ × 9.45″
Weight ≈ 55 lb
Operating temp / humidity −4°F to 122°F (−20°C to 50°C); up to 100% RH
Compliance
Certifications UL67, UL1741 PCS, UL869A, UL916; FCC Part 15, ICES-003
Mounting Wall-mount; non-backup lugs included
System integration Works with Avalon Hybrid Inverter & HV Battery stacks (one-app control)

What Is the Fortress Power 200A Pass-through Integrated Auto Transfer Switch - AV-SEP?

The Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP is an intelligent electrical component that automatically connects and disconnects electrical power between primary and secondary sources without manual intervention. It acts as a bridge between grid power and backup power systems like solar battery storage, generators, or hybrid inverter setups.

Key to many modern energy systems, a high-quality auto transfer switch detects voltage drops, power loss, or abnormalities on your primary supply and instantly transfers your load to a secondary source. With its 200A rating, the AV-SEP version is engineered to handle full service feeds, making it suitable for whole-home backup and high-demand applications.

How the Fortress Power 200A Pass-through Integrated Auto Transfer Switch - AV-SEP Works

The automatic transfer process is critical in mission-critical and residential power backup systems. When utility power is present and stable, the Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP keeps the main service powered as normal. Once an interruption is detected, the unit rapidly closes the circuit to the alternative power source — such as a solar hybrid inverter with battery backup — ensuring your appliances and systems continue to run smoothly.

The “pass-through” feature refers to its ability to allow up to 200 amps of full service current to pass from the source to your load panel without restriction or bottleneck. This is especially important when backing up entire electrical panels, HVAC systems, or large loads that require consistent, uninterrupted power levels.

This switch’s internal design simplifies complex wiring and eliminates the need for extensive manual switching or additional components that slow response time. Its automation logic prioritizes safety by ensuring both sources are never connected at the same time, a key requirement for electrical safety and code compliance.

Benefits of the Fortress Power 200A Pass-through Integrated Auto Transfer Switch - AV-SEP

Seamless Backup Power

With the Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP, power outages become less of a disruption. The transfer switch automatically switches power sources with minimal interruption, reducing downtime for critical equipment and daily use appliances.

High Capacity and Flexibility

The 200A pass-through design ensures this transfer switch accommodates whole-home backup scenarios without being a limiting factor. From solar-plus-battery systems to generator setups, it adapts to multiple energy configurations.

Enhanced Safety and Compliance

Built with safety in mind, the AV-SEP model ensures that grid and backup sources are never cross-connected. This minimizes the risk of back-feeding, protects utility workers, and helps comply with NEC and other electrical standards.

Simplified Installation and Integration

Unlike traditional transfer solutions that require separate panels or complex wiring, this integrated model combines essential transfer functionality in a compact unit. It works seamlessly with smart inverters, storage batteries, and grid-interactive systems to optimize performance.

Who Should Consider the Fortress Power 200A Pass-through Integrated Auto Transfer Switch - AV-SEP?

This transfer switch is ideal for:

  • Homeowners planning whole-home backup with solar and battery systems.
  • Contractors and installers seeking streamlined installation and reliable performance.
  • Commercial facilities requiring dependable automatic power transfer for critical systems.
  • Off-grid and hybrid system builders wanting maximum flexibility and safety.

Whether you are upgrading your current backup strategy or designing a new energy-independent system, the Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP delivers performance, durability, and ease of use.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Fortress Power Avalon Smart Energy Panel (SEP) — 200A service-entrance

The Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP is a powerful and dependable automatic transfer solution designed to seamlessly manage backup power transitions in residential, commercial, and renewable energy systems. Whether you’re integrating solar storage, generators, or hybrid systems, this advanced transfer switch delivers high-capacity performance while simplifying installation, providing safe power switching, and ensuring uninterrupted service when you need it most.

Fortress Avalon Smart Energy Panel whole-home backup ko simple banata hai: integrated automatic transfer switch, manual bypass, AC-coupling & EV/generator inputs ke saath aapko alag critical-loads panel, ATS, ya AC combiner ki zarurat nahi padti. [datasheet]

Key features

  • 200A pass-through, split-phase 120/240 V; service-entrance rated
  • Smart load management: up to 12 single-phase (120 V) ya 6 split-phase (240 V) circuits
  • 50 A provisions for EV charger, AC-coupled inverter, aur generator inputs
  • NEMA 3R (outdoor-rated), LCD + LED status, Wi-Fi/Ethernet/Bluetooth via system app
  • Avalon Hybrid Inverter & Battery stacks ke saath plug-and-play whole-home ESS

Specifications

Fortress Avalon Smart Energy Panel — specification box
Electrical
AC voltage / feed-in 120/240 V split-phase, 60 Hz
Current rating 200 A pass-through
Service entrance Yes; 100–200 A main OCPD options; non-RGM meter std., RGM optional
Smart load control 12× 120 V or 6× 240 V circuits; up to 50 A each; auto/scheduled/manual modes
Generator / EV / AC-coupling Dedicated smart-load provisions up to 50 A
Short-circuit rating Max input SCC 10/15/25 kA (jurisdiction/breaker dependent)
Mechanical & environment
Enclosure NEMA 3R (indoor/outdoor)
Dimensions (W × H × D) 22.2″ × 35.4″ × 9.45″
Weight ≈ 55 lb
Operating temp / humidity −4°F to 122°F (−20°C to 50°C); up to 100% RH
Compliance
Certifications UL67, UL1741 PCS, UL869A, UL916; FCC Part 15, ICES-003
Mounting Wall-mount; non-backup lugs included
System integration Works with Avalon Hybrid Inverter & HV Battery stacks (one-app control)

What Is the Fortress Power 200A Pass-through Integrated Auto Transfer Switch - AV-SEP?

The Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP is an intelligent electrical component that automatically connects and disconnects electrical power between primary and secondary sources without manual intervention. It acts as a bridge between grid power and backup power systems like solar battery storage, generators, or hybrid inverter setups.

Key to many modern energy systems, a high-quality auto transfer switch detects voltage drops, power loss, or abnormalities on your primary supply and instantly transfers your load to a secondary source. With its 200A rating, the AV-SEP version is engineered to handle full service feeds, making it suitable for whole-home backup and high-demand applications.

How the Fortress Power 200A Pass-through Integrated Auto Transfer Switch - AV-SEP Works

The automatic transfer process is critical in mission-critical and residential power backup systems. When utility power is present and stable, the Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP keeps the main service powered as normal. Once an interruption is detected, the unit rapidly closes the circuit to the alternative power source — such as a solar hybrid inverter with battery backup — ensuring your appliances and systems continue to run smoothly.

The “pass-through” feature refers to its ability to allow up to 200 amps of full service current to pass from the source to your load panel without restriction or bottleneck. This is especially important when backing up entire electrical panels, HVAC systems, or large loads that require consistent, uninterrupted power levels.

This switch’s internal design simplifies complex wiring and eliminates the need for extensive manual switching or additional components that slow response time. Its automation logic prioritizes safety by ensuring both sources are never connected at the same time, a key requirement for electrical safety and code compliance.

Benefits of the Fortress Power 200A Pass-through Integrated Auto Transfer Switch - AV-SEP

Seamless Backup Power

With the Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP, power outages become less of a disruption. The transfer switch automatically switches power sources with minimal interruption, reducing downtime for critical equipment and daily use appliances.

High Capacity and Flexibility

The 200A pass-through design ensures this transfer switch accommodates whole-home backup scenarios without being a limiting factor. From solar-plus-battery systems to generator setups, it adapts to multiple energy configurations.

Enhanced Safety and Compliance

Built with safety in mind, the AV-SEP model ensures that grid and backup sources are never cross-connected. This minimizes the risk of back-feeding, protects utility workers, and helps comply with NEC and other electrical standards.

Simplified Installation and Integration

Unlike traditional transfer solutions that require separate panels or complex wiring, this integrated model combines essential transfer functionality in a compact unit. It works seamlessly with smart inverters, storage batteries, and grid-interactive systems to optimize performance.

Who Should Consider the Fortress Power 200A Pass-through Integrated Auto Transfer Switch - AV-SEP?

This transfer switch is ideal for:

  • Homeowners planning whole-home backup with solar and battery systems.
  • Contractors and installers seeking streamlined installation and reliable performance.
  • Commercial facilities requiring dependable automatic power transfer for critical systems.
  • Off-grid and hybrid system builders wanting maximum flexibility and safety.

Whether you are upgrading your current backup strategy or designing a new energy-independent system, the Fortress Power 200A Pass-through integrated Auto Transfer Switch - AV-SEP delivers performance, durability, and ease of use.
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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

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Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

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When you choose Portlandia Electric Supply, you’re buying real products from a trusted company with established supplier relationships. Enjoy peace of mind with 100% manufacturer warranty coverage and lifetime customer support. In an age where online shopping is fraught with risks, it’s crucial to avoid fly-by-night websites that skirt regulations. Shop with confidence, knowing you’re getting genuine quality and reliable service.

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