Add to cart
EG4 12000XP Off-Grid Inverter V2 | 48V Split Phase | 24kW PV Input | 12kW Power Output EG4 12000XP Off-Grid Inverter V2 | 48V Split Phase | 24kW PV Input | 12kW Power Output $1,666.95
Harvest Right Standard Vacuum Oil Pump 7CFM Harvest Right Standard Vacuum Oil Pump 7CFM $697.95
eg4|SKU:1511048

EG4 GridBOSS MID V 3.1 200A Service Entrance — Centralized ESS Interconnection

Consolidate Your Entire ESS Into One Panel

10-in-1 component consolidation — Replace breakers and transfer switches
22 kAIC main breaker rating — Powerful, reliable service integration
Remote EG4 app monitoring — Adjust settings from anywhere in real time
Multi-source power management — Utility, generator, and inverter connectivity
  • FREE System Design Consultation -- Engineers size your system for your actual consumption
  • FREE Shipping -- LTL freight included on all orders
  • Compatibility Guarantee -- Pre-vetted components that work together

$1,755.95

Add to Cart
EG4 GridBOSS MID V 3.1 200A Service Entrance
EG4 GridBOSS MID V 3.1 200A Service Entrance
$1,755.95

30-day money back · No restocking fee

🔒 100% Secure Checkout

Visa Mastercard American Express Apple Pay Google Pay Klarna Link by Stripe
Free Returns 30-day hassle-free returns.
Free Delivery Every order, every time.
Ships in 3–5 Days Heavy-duty crating included.
4.9/5 Stars 2,400+ verified reviews.

In the box

  • EG4 GridBOSS MID V 3.1 200A Service Entrance
EG4 GridBOSS MID V 3.1 200A Service Entrance
EG4 GridBOSS MID V 3.1 200A Service Entrance — Centralized ESS Interconnection
$1,755.95

Consolidate Your Entire ESS Into One Panel

The EG4 GridBOSS MID replaces up to 10 separate components — breakers, transfer switches, and bus bars — with one centralized enclosure. It connects your utility, generators, hybrid inverters, and loads in a single field-tested panel. A 22 kAIC main breaker handles serious service integration, while remote monitoring through the EG4 app keeps you in control. For off-grid and grid-independent systems, this unit eliminates the guesswork of piecing together mismatched components. Supports up to three hybrid inverters at 90A each, one generator at 125A, and four smart ports.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
22 kAIC Main Breaker
10-in-1 Integration
Remote App Monitoring
200A Service Rated
200A
Main Breaker Rating
22 kAIC
Short Circuit Rating
10
Components Consolidated
One Enclosure Replaces the Scattered Parts Problem

One Enclosure Replaces the Scattered Parts Problem

Piecing together breakers, transfer switches, and bus bars from five different vendors is how systems end up incompatible — and how your house goes dark when the grid drops. The EG4 GridBOSS MID eliminates that guesswork by consolidating up to 10 components into a single field-tested enclosure. At Off Grid Vault, every component we carry is pre-vetted to work together, and this unit is built for exactly that: connecting your utility, generator, and hybrid inverters through one centralized hub. No mismatched protocols. No disconnected hardware. Just a unified service entrance that talks to every part of your system.

Automated Power Routing for Longer Battery Life

Automated Power Routing for Longer Battery Life

The GridBOSS MID automates power routing between your utility feed, generator input, and up to three hybrid inverters rated at 90A each. Four smart ports ranging from 60A to 125A give you flexible load management, while the 22 kAIC main breaker handles serious fault current without flinching. Remote access through the EG4 app or monitoring website means you can check system status and adjust settings without walking outside. For any grid-independent setup, automated load management translates directly into longer battery life and fewer manual interventions during an outage.

Sized for Serious Off-Grid Architectures

Sized for Serious Off-Grid Architectures

Supporting one generator up to 125A alongside three hybrid inverters, the GridBOSS MID is designed for real system scale — not a weekend project. Whether you are building a homestead ESS or hardening an existing property against extended outages, this service entrance handles the interconnection complexity that most enclosures cannot. Note that specific breakers are required depending on your inverter: a 70A breaker for the EG4 18kPV or a 50A breaker for the EG4 12kPV, plus a separately sourced 200A main breaker. Off Grid Vault includes a free system design consultation with every purchase to ensure every breaker and connection is specified correctly before you order.

Is This the Right Service Entrance for Your System?

The GridBOSS MID is built for specific electrical configurations. Confirm compatibility before ordering — or reach out for a free system design consultation.

  • Your main service panel is rated for 200A
  • Your hybrid inverter output is 90A or less per unit (supports up to 3)
  • Your backup generator is rated at 125A or less

Built for Real-World Energy Independence

The GridBOSS MID serves as the nerve center for serious power systems — not portable setups, but permanent installations designed for daily reliance.

Whole-Home Off-Grid Power
Hybrid Grid-Tied with Battery Backup
Homestead ESS Integration
Multi-Inverter Solar Storage System

Full specifications

At a glance

Dimensions
See product page
Surface
See product page
Warranty
See product page
Compliance
See product page
Full specifications9 data points across 4 categories

Dimensions

DimensionsSee product page

Power & Performance

Main Breaker Rating200A
Short Circuit Rating (AIC)22 kAIC
Generator SupportUp to 125A
Hybrid Inverter SupportUp to 3 inverters at 90A each
Smart Ports4 ports, 60A to 125A
Remote MonitoringEG4 app or monitoring system website

Materials

MaterialsSee product page

Compliance & Warranty

Compliance & WarrantySee product page

The Off Grid Vault Promise

Every product we carry earns its place. If it doesn't meet our standards, it doesn't make the cut.

30-Day Performance GuaranteeIf it doesn't perform as specified, we make it right — uninstalled returns accepted within 30 days in original packaging.
Free ShippingShips free on all orders, including LTL freight on large systems. No minimums, no thresholds, no surprise charges at checkout.
Free System Design ConsultationOur engineers size your system for your actual consumption — no guesswork, no incompatible components. Available before or after purchase.
★★★★★
“I was dreading wiring my service entrance — breakers, transfer switch, bus bars, all from different vendors. The GridBOSS MID cleaned up my entire panel wall. One box, one connection point for my 18kPV and generator. Took a Saturday afternoon instead of a full weekend. Off Grid Vault walked me through the breaker requirements before I ordered.”
F
First L.Prescott, AZ

EG4 GridBOSS MID 200A Service Entrances

The EG4 GridBOSS MID streamlines your Energy Storage System (ESS) by combining up to 10 components into one powerful, integrated unit. Designed for seamless connectivity with utilities, generators, inverters, and loads, it provides centralized control, effortless installation, and real-time remote monitoring.


EG4 GridBOSS MID V2 SPECS and Features

  • Connect and manage utility, inverters, generator, and loads from a single device.
  • Replace breakers, transfer switches, and more with one compact solution.
  • Reliable with a 22 kAIC main breaker for powerful service integration.
  • Automate power management to optimize battery performance.
  • Access and adjust settings remotely via the EG4 app or monitoring system website.
  • Supports one generator up to 125A, 3 hybrid inverters up to 90A each, and 4 smart ports ranging from 60A to 125A.
  • 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).
  • Voltage: 120/240VAC
  • Max Current: 200A
  • Hybrid Ports: 3 (up to 90A each)
  • Smart Ports: 4 (up to 125A)
  • Operating Temp: -40°F to 140°F
  • Warranty: 10 years
  • Certifications: UL Certified, compatible with Eaton 200A main breaker model CSR25K


Your Satisfaction with EG4 is Guaranteed:

  • Lowest Price Guaranteed

Reviews

There are no reviews yet.

Be the first to review “EG4 GridBOSS MID V 3.1 200A Service Entrance — Centralized ESS Interconnection”

Your email address will not be published. Required fields are marked *

Frequently Asked Questions

The GridBOSS MID replaces up to 10 separate components — individual breakers, transfer switches, bus bars, and enclosures that would cost more when purchased individually and still leave you with integration risk. You are paying for a pre-engineered interconnection hub that eliminates compatibility guesswork. At Off Grid Vault, we include a free system design consultation so every breaker and connection is specified before you spend a dollar on additional hardware.
Yes. Off Grid Vault is an authorized dealer for EG4 and other brands including Sol-Ark, Renon Power, Schneider Electric, and Victron Energy. Warranty claims go through us directly — not through a ticket queue with a marketplace seller. You get a real point of contact who understands off-grid systems, not a generic support script.
Yes. The GridBOSS MID supports the EG4 18kPV Hybrid Inverter, but you must purchase a 70A breaker separately for that connection. For the EG4 12kPV, a 50A breaker is required. A 125A breaker (sold separately) works with either the Smart Port or Gen Port. The 200A main breaker is also not included and must be sourced separately. Contact Off Grid Vault for a free system design consultation and we will specify every breaker you need.
Lead times vary based on current stock. Off Grid Vault ships free on all orders, including LTL freight for large system components like the GridBOSS MID. Contact us before ordering if you need a specific delivery window for your installation timeline — we will give you an honest estimate, not a fabricated countdown.
Warranty coverage follows the manufacturer terms for the EG4 GridBOSS MID. As an authorized dealer, Off Grid Vault handles warranty claims directly — you work with us, not a third-party queue. For installed systems, warranty claims are processed through our team. Uninstalled returns are covered under our 30-day performance guarantee if the product is in original packaging.
Yes. The GridBOSS MID supports one generator input up to 125A alongside your utility connection. Automated power management routes sources based on your configuration, so your system can prioritize solar and battery, fall back to generator, or pull from the grid as needed. The EG4 app gives you remote visibility and control over how those sources interact.
SKU: 1511048 Categories: , Brand:

The Off Grid Vault Promise

Every product we carry earns its place. If it doesn't meet our standards, it doesn't make the cut.

30-Day Performance Guarantee If it doesn't perform as specified, we make it right — uninstalled returns accepted within 30 days in original packaging.
Free Shipping Ships free on all orders, including LTL freight on large systems. No minimums, no thresholds, no surprise charges at checkout.
Free System Design Consultation Our engineers size your system for your actual consumption — no guesswork, no incompatible components. Available before or after purchase.

Related products

About eg4 Micro-Grid Interconnection Device

eg4 is a trusted manufacturer of premium micro-grid interconnection device. OffGridVault is an authorized dealer offering the full eg4 lineup with free delivery, price match guarantee, and expert support.

View all eg4 products →

Related Categories

AC/DC Enclosure 2 products Air Handlers 8 products Air Heaters 2 products Amp Hub 2 products Awnings 15 products Batteries 3 products
Join the Grill Island Community

Expert Picks, Straight to Your Inbox

No spam. Just the gear worth knowing about.

No spam. Unsubscribe anytime.