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Price Match Guarantee 💲 Fast & Free Shipping 📦 No Sales Tax 💵 Post Purchase Support 🤝 Free Replacement Parts 🛠️ Dealer Warranty 👷🏼 Extended Warranty!

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EG4 GridBOSS MID | 200A Service Entrance electronic device on a white background

EG4 GridBOSS MID v3.1 | 200A Service Entrance

SKU EG4GRIDBOSS
Save $300.02
$2,299.99
$1,999.97
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EG4 GridBOSS MID 200A Service Entrance — Smart Backup Hub

One box to run it all. The EG4 GridBOSS MID 200A Service Entrance ties your grid, your FlexBOSS inverters, your batteries, and even a generator into a single smart hub — so whole-home backup stops being a tangle of panels and switches and finally becomes something you control.

Why You'll Love The EG4 GridBOSS MID 200A Service Entrance

  1. One box replaces a wall of parts. The GridBOSS stands in for up to 10 separate components — transfer switches, back-fed breakers, feeder taps, combiner panels and more — so your install is cleaner, simpler, and cheaper to wire.
  2. You decide what stays on. Four programmable smart ports (125A/80A/60A/60A) plus smart load shedding let you back up the circuits that matter and drop the ones that don't when the battery runs low.
  3. Generator-ready for the long outages. A built-in two-wire generator start and a 200A transfer switch mean it can fire up your generator, warm it, and hand off power automatically when your batteries get low.
  4. Built to keep everyone safe. The instant the grid drops, it isolates your system to protect line workers, works with a remote rapid-shutdown initiator, and carries UL 1741, UL 67, and UL 869A listings in a weatherproof NEMA 3R enclosure.Placeholder Image

Your life, with the EG4 GridBOSS MID 200A Service Entrance

You've decided you want real backup — not just a couple of circuits, but your whole home, ready to ride out whatever comes. The problem? Wiring it all together usually means a cluttered wall of transfer switches, breakers, and combiner panels, with a bill to match.

The EG4 GridBOSS MID 200A Service Entrance changes that. It's the single hub where your utility meter, up to three FlexBOSS inverters, your batteries, your generator, and your smart loads all come together — one clean, code-compliant box instead of ten.

When the grid goes down, it acts instantly. It opens the grid connection to keep line workers safe, switches your inverters into off-grid mode, and keeps your critical loads running without missing a beat. When power returns, it reconnects on its own.

You stay in control of the details, too. Four programmable smart ports let you decide exactly which circuits get priority — the well pump, the EV charger, the AC-coupled panels — and load shedding quietly drops the non-essentials if your batteries run low. For the long haul, the built-in generator start keeps the lights on until the grid is back.

And you can manage all of it from your phone. Remote monitoring, configuration, and firmware updates through the EG4 app put your whole system a tap away, wherever you are. This is whole-home resilience, finally made simple.

The EG4 GridBOSS MID 200A Service Entrance in a nutshell:

  1. 200A service entrance with a built-in transfer switch — one hub for grid, inverters, generator, and loads.
  2. Four programmable smart ports (125A/80A/60A/60A) — prioritize and shed loads exactly how you want.
  3. Runs up to three FlexBOSS inverters (90A each) — scale your backup power without the wiring headache.
  4. NEMA 3R, UL-listed, RSD-ready — safe, code-compliant, indoor or out.
 Placeholder Image

 

Important EG4 GridBoss Breaker Information

Each EG4 GridBoss unit includes:

  • 90A Breaker:
  • Compatible only with the EG4 FlexBOSS21
  • Smart Port Breakers:
  • Rated at 30A, 40A, 60A, and 80A.

Please Note:

  • You must purchase a 70A breaker separately for use with the EG4 18kPV Hybrid Inverter.
  • You must purchase a 50A Breaker separately for use with the EG4 12kPV Hybrid Inverter.
  • A 125A Breaker (sold separately) can be used with either the Smart Port or Gen Port.
  • 200A main breaker not included (must be purchased separately; model required: Eaton 200A CSR25K, not available through Signature Solar. See manual for more information).

Notice:

In order for the GridBOSS to meet it's UL Certifications copper wire must be used inside the unit. 

EG4 GridBOSS MID 200A Service Entrance specifications

Service & Switching

  • Service rating: 200A service entrance, 22kAIC
  • Transfer switch: 200A (passes grid or inverter power)
  • Manual bypass: yes (grid can power critical loads directly)
  • Grid isolation: automatic on grid loss (line-worker protection)

Ports & Connections

  • Inverter ports: up to 3 hybrid inverters, 90A each
  • Smart load ports: 4 programmable (125A / 80A / 60A / 60A)
  • Generator input: two-wire start, up to 125A
  • AC coupling: supported via the smart ports
  • Peripheral wiring: up to 300 ft

Compatibility

  • Compatible inverters: EG4 FlexBOSS21, FlexBOSS18, 18kPV, 12kPV
  • Not compatible with: EG4 6000XP, 12000XP
  • Breakers: not included (v3.1) — Eaton BR / BSB compatible

Control & Monitoring

  • Smart loads: load shedding / power shedding
  • Remote access: monitoring, configuration, and firmware via the EG4 app
  • Rapid shutdown: works with a remote RSD initiator

Physical & Environment

  • Enclosure: NEMA 3R (indoor or outdoor)
  • Operating temp: -40°F to 113°F (-40°C to 45°C)
  • Dimensions (H × W × D): 31.5 × 19.7 × 7 in
  • Weight: 55 lbs

Safety & Certifications

  • Certifications: UL 1741, UL 67, UL 869A (with copper wire)
  • Model: MI-200-2P-HYB-AW (v3.1)
  • Brand: EG4

EG4 GridBOSS Micro-Grid Interconnection Device (MID) Video

 

Frequently-Asked Questions

Is the EG4 GridBOSS MID compatible with all inverters?

Yes, it works with most hybrid and off-grid inverters, ensuring smooth integration into solar and battery systems.

Can this unit manage grid power and battery storage?

Yes, it automatically switches among grid, battery, and solar power to optimize energy use.

Does it provide surge protection?

Yes, built-in surge protection safeguards your energy system from voltage spikes and overloads.

Is the installation complicated?

No, the unit comes pre-wired for easy installation, reducing setup time.

Can I expand my system later?

Yes! The EG4 GridBOSS MID is scalable, making it a future-proof solution for growing energy needs.

Let the experts help you find your perfect EG4 GridBOSS MID 200A Service Entrance setup

Not sure how the EG4 GridBOSS MID 200A Service Entrance fits your inverters, your panel, and your backup goals? That's exactly what we're here for. Our team works with these systems every day, and we'll help you plan your microgrid right the first time — no guesswork.

Chat via email — support@kratopower.com

Chat on the phone — +1 888-855-7286

EG4 GridBOSS MID 200A Service Entrance documents and materials

Everything you need to spec, install, and register your EG4 GridBOSS MID 200A Service Entrance:

Safety note: The EG4 GridBOSS MID 200A Service Entrance is high-voltage electrical equipment that connects directly to your utility service. Everything on this page is provided for general information only and is not professional electrical, installation, or safety advice. Installation must always be carried out by a licensed electrician or qualified solar installer, in line with local codes, permitting requirements, and the manufacturer's manual. Every home and system is different, so if you're ever in doubt, please consult a qualified professional before purchase or installation. You use this product and the information here at your own risk.

Shipping is FREE on all orders to customers within the 48 Contiguous States and the District of Columbia. We do not ship to Alaska, Hawaii, or any outlying islands and territories.

Processing time for orders is 1 business day

Shipping time for orders is 4-5 business days


Want to know more about our Returns Policy? Read more here.

Want to know more about our Shipping Policy? Read more here.

We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Krato Power.

  • Family Owned & Operated. Ask for Alex (Owner) at any time!
  • 4-5 Day Free Shipping with free liftgate service to the 48 Contiguous States and the District of Columbia. No extra charges. Ever
  • NO Sales Tax except for IN
  • Secured Purchase. All Customer data is secured with SSL Encryption
  • 30 Day Easy Returns. Not happy with your product, we'll take it back no questions asked.
  • Exceptional Customer Service. Check out our About Us page.
  • Call or Text Us - We are really here! (In the USA). 1-888-855-7286
In Stock and Ready To Ship

All of our items are in stock and ready to ship. All items ship within 1 business day.

Top Customer Service

We have excellent customer service. Questions? Call us at 1-888-855-7286

Hassle Free Returns

30 Day Easy Return Policy

Price BEAT Guarantee

Found a better price? We will BEAT it!

Schedule a Consultation

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  • Schedule a consultation here for later!
Book a Consultation
Call to Order: +1 888 855 7286
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Description

EG4 GridBOSS MID 200A Service Entrance — Smart Backup Hub

One box to run it all. The EG4 GridBOSS MID 200A Service Entrance ties your grid, your FlexBOSS inverters, your batteries, and even a generator into a single smart hub — so whole-home backup stops being a tangle of panels and switches and finally becomes something you control.

Why You'll Love The EG4 GridBOSS MID 200A Service Entrance

  1. One box replaces a wall of parts. The GridBOSS stands in for up to 10 separate components — transfer switches, back-fed breakers, feeder taps, combiner panels and more — so your install is cleaner, simpler, and cheaper to wire.
  2. You decide what stays on. Four programmable smart ports (125A/80A/60A/60A) plus smart load shedding let you back up the circuits that matter and drop the ones that don't when the battery runs low.
  3. Generator-ready for the long outages. A built-in two-wire generator start and a 200A transfer switch mean it can fire up your generator, warm it, and hand off power automatically when your batteries get low.
  4. Built to keep everyone safe. The instant the grid drops, it isolates your system to protect line workers, works with a remote rapid-shutdown initiator, and carries UL 1741, UL 67, and UL 869A listings in a weatherproof NEMA 3R enclosure.Placeholder Image

Your life, with the EG4 GridBOSS MID 200A Service Entrance

You've decided you want real backup — not just a couple of circuits, but your whole home, ready to ride out whatever comes. The problem? Wiring it all together usually means a cluttered wall of transfer switches, breakers, and combiner panels, with a bill to match.

The EG4 GridBOSS MID 200A Service Entrance changes that. It's the single hub where your utility meter, up to three FlexBOSS inverters, your batteries, your generator, and your smart loads all come together — one clean, code-compliant box instead of ten.

When the grid goes down, it acts instantly. It opens the grid connection to keep line workers safe, switches your inverters into off-grid mode, and keeps your critical loads running without missing a beat. When power returns, it reconnects on its own.

You stay in control of the details, too. Four programmable smart ports let you decide exactly which circuits get priority — the well pump, the EV charger, the AC-coupled panels — and load shedding quietly drops the non-essentials if your batteries run low. For the long haul, the built-in generator start keeps the lights on until the grid is back.

And you can manage all of it from your phone. Remote monitoring, configuration, and firmware updates through the EG4 app put your whole system a tap away, wherever you are. This is whole-home resilience, finally made simple.

The EG4 GridBOSS MID 200A Service Entrance in a nutshell:

  1. 200A service entrance with a built-in transfer switch — one hub for grid, inverters, generator, and loads.
  2. Four programmable smart ports (125A/80A/60A/60A) — prioritize and shed loads exactly how you want.
  3. Runs up to three FlexBOSS inverters (90A each) — scale your backup power without the wiring headache.
  4. NEMA 3R, UL-listed, RSD-ready — safe, code-compliant, indoor or out.
 Placeholder Image

 

Important EG4 GridBoss Breaker Information

Each EG4 GridBoss unit includes:

  • 90A Breaker:
  • Compatible only with the EG4 FlexBOSS21
  • Smart Port Breakers:
  • Rated at 30A, 40A, 60A, and 80A.

Please Note:

  • You must purchase a 70A breaker separately for use with the EG4 18kPV Hybrid Inverter.
  • You must purchase a 50A Breaker separately for use with the EG4 12kPV Hybrid Inverter.
  • A 125A Breaker (sold separately) can be used with either the Smart Port or Gen Port.
  • 200A main breaker not included (must be purchased separately; model required: Eaton 200A CSR25K, not available through Signature Solar. See manual for more information).

Notice:

In order for the GridBOSS to meet it's UL Certifications copper wire must be used inside the unit. 

EG4 GridBOSS MID 200A Service Entrance specifications

Service & Switching

  • Service rating: 200A service entrance, 22kAIC
  • Transfer switch: 200A (passes grid or inverter power)
  • Manual bypass: yes (grid can power critical loads directly)
  • Grid isolation: automatic on grid loss (line-worker protection)

Ports & Connections

  • Inverter ports: up to 3 hybrid inverters, 90A each
  • Smart load ports: 4 programmable (125A / 80A / 60A / 60A)
  • Generator input: two-wire start, up to 125A
  • AC coupling: supported via the smart ports
  • Peripheral wiring: up to 300 ft

Compatibility

  • Compatible inverters: EG4 FlexBOSS21, FlexBOSS18, 18kPV, 12kPV
  • Not compatible with: EG4 6000XP, 12000XP
  • Breakers: not included (v3.1) — Eaton BR / BSB compatible

Control & Monitoring

  • Smart loads: load shedding / power shedding
  • Remote access: monitoring, configuration, and firmware via the EG4 app
  • Rapid shutdown: works with a remote RSD initiator

Physical & Environment

  • Enclosure: NEMA 3R (indoor or outdoor)
  • Operating temp: -40°F to 113°F (-40°C to 45°C)
  • Dimensions (H × W × D): 31.5 × 19.7 × 7 in
  • Weight: 55 lbs

Safety & Certifications

  • Certifications: UL 1741, UL 67, UL 869A (with copper wire)
  • Model: MI-200-2P-HYB-AW (v3.1)
  • Brand: EG4

EG4 GridBOSS Micro-Grid Interconnection Device (MID) Video

 

Frequently-Asked Questions

Is the EG4 GridBOSS MID compatible with all inverters?

Yes, it works with most hybrid and off-grid inverters, ensuring smooth integration into solar and battery systems.

Can this unit manage grid power and battery storage?

Yes, it automatically switches among grid, battery, and solar power to optimize energy use.

Does it provide surge protection?

Yes, built-in surge protection safeguards your energy system from voltage spikes and overloads.

Is the installation complicated?

No, the unit comes pre-wired for easy installation, reducing setup time.

Can I expand my system later?

Yes! The EG4 GridBOSS MID is scalable, making it a future-proof solution for growing energy needs.

Let the experts help you find your perfect EG4 GridBOSS MID 200A Service Entrance setup

Not sure how the EG4 GridBOSS MID 200A Service Entrance fits your inverters, your panel, and your backup goals? That's exactly what we're here for. Our team works with these systems every day, and we'll help you plan your microgrid right the first time — no guesswork.

Chat via email — support@kratopower.com

Chat on the phone — +1 888-855-7286

EG4 GridBOSS MID 200A Service Entrance documents and materials

Everything you need to spec, install, and register your EG4 GridBOSS MID 200A Service Entrance:

Safety note: The EG4 GridBOSS MID 200A Service Entrance is high-voltage electrical equipment that connects directly to your utility service. Everything on this page is provided for general information only and is not professional electrical, installation, or safety advice. Installation must always be carried out by a licensed electrician or qualified solar installer, in line with local codes, permitting requirements, and the manufacturer's manual. Every home and system is different, so if you're ever in doubt, please consult a qualified professional before purchase or installation. You use this product and the information here at your own risk.
Shipping

Shipping is FREE on all orders to customers within the 48 Contiguous States and the District of Columbia. We do not ship to Alaska, Hawaii, or any outlying islands and territories.

Processing time for orders is 1 business day

Shipping time for orders is 4-5 business days


Want to know more about our Returns Policy? Read more here.

Want to know more about our Shipping Policy? Read more here.

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Krato Power.

  • Family Owned & Operated. Ask for Alex (Owner) at any time!
  • 4-5 Day Free Shipping with free liftgate service to the 48 Contiguous States and the District of Columbia. No extra charges. Ever
  • NO Sales Tax except for IN
  • Secured Purchase. All Customer data is secured with SSL Encryption
  • 30 Day Easy Returns. Not happy with your product, we'll take it back no questions asked.
  • Exceptional Customer Service. Check out our About Us page.
  • Call or Text Us - We are really here! (In the USA). 1-888-855-7286