EG4 - GridBOSS MID V3.1 200A

EG4 - GridBOSS MID V3.1 200A SKU: EG4MID2P200AV2.1

GridBOSS V3.1 delivers greater flexibility, supports aluminum wiring, and allows complete breaker customization.

Key Updates in GridBOSS V3.1

Breakers Now Sold Separately

GridBOSS V3.1 no longer includes breakers by default. Installers can now customize each setup as needed.

Compatible breaker series:

Eaton BR Series

BSB B3S Series (available as the standard GridBOSS Breaker Kit or individually)

Important for Canadian Installations

The GridBOSS is not service-entrance rated in Canada yet. A 100A or 200A disconnect is required between the electrical meter and the GridBOSS.

Simplify and Optimize Your ESS

The EG4 GridBOSS MID consolidates up to 10 components into a single, powerful hub.

It connects utilities, generators, inverters, and loads in one place — simplifying installation, management, and monitoring.

Key Features

Unified Control: Manage utility, inverters, generator, and loads from one device.

Reduced Complexity: Replaces breakers and transfer switches in one compact box.

Smart Load Shedding: Automates power management for better battery performance.

200A Main Bus: 22 kAIC main breaker capacity for large ESS systems.

Remote Monitoring: Configure and monitor via the EG4 App or web portal.

Flexible Breakers:

– 1 x Generator (up to 125A)

– 3 x Hybrid Inverters (up to 90A each)

– 4 x Smart Ports (60A to 125A range)

Specs

Specification	Detail
Voltage	120/240 VAC
Max Current	200 A
Hybrid Ports	3 (up to 90 A each)
Smart Ports	4 (up to 125 A each)
Operating Temp	-40 °F to 140 °F
Warranty	10 Years
Certifications	UL Certified
Main Breaker Compatibility	Eaton 200A CSR25K

Breaker Compatibility

Component	Required Breaker	Notes
EG4 18kPV Hybrid Inverter	70 A	Purchase separately
EG4 12kPV Hybrid Inverter	50 A	Purchase separately
Smart Port / Gen Port	125 A	Optional, sold separately
Main Breaker	200 A Eaton CSR25K	Required for operation

Each GridBOSS ships without breakers.

Supported models: BSB B3S and Eaton BR series.

You can now use aluminum wire for external connections.

To maintain UL certification, copper wire must still be used inside the unit.

User Manual 

Spec Sheet

UL1741 Certification

UL 67_869A Certification