EG4 GridBOSS 90A Breaker Kit

The EG4 GridBOSS 90A Breaker Kit Is Your Complete Breaker Solution for Whole-Home Backup Power

The EG4 GridBOSS MID is one of the most capable Microgrid Interconnect Devices on the market a single, intelligent hub that replaces up to 10 separate electrical components and delivers centralized control over your entire energy storage system. But here's the catch: the GridBOSS v3.1 ships without circuit breakers. That means before your system can go live before your inverters, generator, and smart load ports can do their jobs you need the right breakers, in the right sizes, from the right source.

That's exactly what the EG4 GridBOSS Breaker Kit is designed to do. This purpose-built kit takes the guesswork, the research, and the parts-hunting entirely off your plate. Instead of tracking down compatible Eaton or BSB two-pole breakers one by one, cross-referencing amp ratings with each port's requirements, and hoping everything arrives before your installer shows up, you get one kit with everything pre-selected and ready to go. Whether you're backing up your home during a grid outage, running a solar-plus-storage setup, or managing a complex off-grid energy system, the EG4 GridBOSS Breaker Kit gets your system from "almost ready" to "fully operational" fast.

EG4 GridBOSS Breaker Kit Features

Every breaker you need comes in one single kit

No need to search different stores or websites for parts. This kit includes all eight compatible two-pole breakers in the exact sizes required for your GridBOSS system saving you time, stress, and extra shipping costs.

Pre-matched breaker sizes take the guesswork out of installation

Each breaker is already sized to match specific GridBOSS ports and EG4 inverter models 30A, 40A, 60A, 70A, 80A, and more so you install with confidence knowing every port gets exactly the right rating.

Approved breakers keep your system certified and code-compliant

Only Eaton and BSB two-pole breakers are approved for use inside the GridBOSS chassis. This kit uses only those exact brands, protecting your UL certification, satisfying your inspector, and keeping your warranty fully intact.

Smart load port breakers make home energy automation actually work

The GridBOSS has four programmable smart load ports built in. Without the right breakers installed, those ports sit idle. This kit activates them so you can automate which appliances get power and when.

One order covers your entire GridBOSS breaker setup completely

Instead of placing multiple orders from different suppliers, you get all eight breakers in one package. Your installer shows up, everything is on hand, and the job gets done right without any waiting or scrambling.

Wide amp range supports every load size in your home

From a 30-amp appliance circuit to an 80-amp heat pump, the included breaker range covers a wide variety of household loads giving you full flexibility to configure your GridBOSS for your specific energy needs.

Works perfectly with the full EG4 inverter product lineup

Whether you're running the EG4 12kPV, 18kPV, FlexBOSS18, or FlexBOSS21, this kit has the correct breaker size ready. No compatibility issues, no wrong fits just a clean, matched installation from start to finish.

What's Included

• 1 x EG4 GridBOSS Breaker Kit
  • 1 x 30A Breaker
  • 1 x 40A Breaker
  • 2 x 60A Breakers
  • 1 x 80A Breaker
  • 1 x 90A Breaker