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4ecdb22e-2119-4247-ae80-3a47e2b00a8b__28052 Growatt 5kW Split Phase Transformer $236.95
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Growatt 11.4K Split Phase Transformer — 240/208V Stable Output for Off-Grid Systems

Reliable Split Phase Conversion for Your Off-Grid Build

Elevate your energy independence with the Growatt 11.4K Split Phase Transformer, engineered to deliver flawless, stable power for demanding residential and small commercial systems. Seamlessly integrating with compatible Growatt inverters, this premium component ensures smooth, dependable operation whether you’re optimizing an off-grid retreat or fortifying your backup power infrastructure. Experience the confidence of robust, uninterrupted energy, crafted for those who refuse to compromise on performance.

240/208V split phase — Stable voltage for whole-home appliances
11400VA max capacity — Handles simultaneous L1-N and L2-N loads
Built-in transformer — No external transformer needed for install
5kW continuous output — Reliable energy storage power delivery
  • FREE System Design Consultation -- Our engineers size your system for your actual consumption
  • FREE Shipping -- Ships free — no surprise freight charges
  • Compatibility Guarantee -- Pre-vetted to work with your Growatt inverter

$482.95

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Growatt-11.4K-Split-Phase-Transformer-2
Growatt 11.4K Split Phase Transformer
$482.95

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In the box

  • Growatt ATS 11400T-US Split Phase Transformer
Growatt-11.4K-Split-Phase-Transformer-2
Growatt 11.4K Split Phase Transformer — 240/208V Stable Output for Off-Grid Systems
$482.95

Reliable Split Phase Conversion for Your Off-Grid Build

The Growatt 11.4K Split Phase Transformer delivers stable 240/208V split phase output when paired with compatible Growatt inverters, making it a field-tested workhorse for grid-independent homes and backup systems. With 11,400VA total capacity and 5kW continuous power for energy storage, this built-to-survive unit handles the real-world demands of larger residential and small commercial off-grid setups. No guessing, no mismatched components — just dependable power conversion engineered for systems that can't afford to go dark.

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
Built-In Transformer
240/208V Output
11,400VA Max Capacity
5kW Continuous Power
11,400VA
Maximum Output
240/208V
Voltage Rating
5kW
Continuous Power (Storage)
Growatt-11.4K-Split-Phase-Transformer-2

Pre-Vetted Compatibility With Your Growatt System

The biggest risk when building an off-grid power system isn't a single bad component — it's components that refuse to talk to each other. A transformer with the wrong voltage spec means your inverter can't deliver split phase power to your home, and you discover that problem after everything is mounted. At Off Grid Vault, every component we carry is pre-vetted for compatibility with the systems we sell. This Growatt 11.4K transformer is specifically matched to work with compatible Growatt inverters, so your L1-N and L2-N outputs deliver the 11400VA your home actually needs. We already did the engineering — so you don't have to.

Growatt-11.4K-Split-Phase-Transformer-1

Built-In Transformer for a Clean, Self-Contained Installation

The ATS 11400T-US integrates a built-in transformer, eliminating the need to source and wire a separate unit. For off-grid proven setups where simplicity and reliability matter, this all-in-one design reduces installation complexity and potential points of failure. Your 240/208V split phase output comes from a single, purpose-built enclosure — not a patchwork of external components pieced together from different vendors. That matters when you're miles from the nearest hardware store and your system needs to work the first time.

Growatt-11.4K-Split-Phase-Transformer-2

11400VA Capacity Sized for Real-World Home Loads

This transformer supports a maximum combined L1-N and L2-N simultaneous output of 11400VA, with 5kW continuous power for energy storage applications. That translates to running your well pump, refrigerator, and lighting circuits simultaneously — the loads that actually matter during an outage or in daily off-grid living. The 240/208V configuration covers standard US residential panel requirements, so your existing breakers and wiring work without modification. This is grid-independent power sized for how you actually live, not how a datasheet assumes you live.

Compatibility Check

Confirm your system matches these requirements before ordering.

  • Compatible Growatt inverter with ATS-US connection
  • System requires 240/208V split phase output
  • Total L1-N + L2-N load does not exceed 11,400VA

Where This Transformer Performs

Built for serious power systems that need stable split phase conversion.

Off-Grid Residential
Backup Power Systems
Small Commercial Install

Full specifications

At a glance

Dimensions
See product page
Power
240/208V
Compliance
See product page
Warranty
See product page
Full specifications8 data points across 4 categories

Dimensions

DimensionsSee product page

Power & Performance

Voltage240/208V
Max Power11400VA
Max Continuous Power (Energy Storage)5kW
Max L1-N + L2-N Simultaneous Output11400VA

Materials

ConstructionSee product page

Compliance & Warranty

ComplianceSee product page
WarrantySee product page

The Off Grid Vault Promise

Every product we carry is vetted for real-world performance. 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 surprise charges at checkout.
Authorized Dealer SupportWe are an authorized dealer. Warranty claims go through us directly — not through a faceless ticket queue.
★★★★★
“Installed this with my Growatt 12K inverter on my homestead in northern Arizona. Split phase output was clean from day one — well pump, fridge, and shop tools all run without a hiccup. Spent six months trying to piece together a transformer from other vendors first. This just worked.”
F
First L.Flagstaff, AZ

Growatt 11.4K Split Phase Transformer | ATS 11400T-US

Unlock the full potential of your off-grid or backup power system with the Growatt 11.4kW Split Phase Transformer (ATS 11400T-US). Engineered for seamless integration with compatible Growatt inverters, this premium transformer delivers stable, efficient split-phase power—perfect for larger residential estates and small commercial operations. Whether you’re building a robust off-grid homestead or reinforcing your emergency backup infrastructure, the ATS 11400T-US ensures reliable performance, smooth load management, and the dependable support your energy independence demands.

Key Features

  • High-Capacity Split-Phase Output: Provides stable 240/208V split-phase power with a maximum capacity of 11,400VA, ideal for powering heavy-duty appliances and multiple circuits simultaneously.
  • Built-In Transformer for Simplified Setup: The integrated transformer eliminates the need for external components, streamlining installation and reducing system complexity.
  • Balanced Load Distribution: Designed for a maximum sum of L1-N and L2-N simultaneous output of 11,400VA, ensuring efficient power sharing across both phases.
  • Optimized for Energy Storage: Supports up to 5kW of continuous power for energy storage applications, maximizing your battery investment during peak demand or grid outages.
  • Premium Build Quality: Constructed to meet rigorous standards for durability and long-term reliability in demanding residential and light commercial environments.

Specifications

  • Voltage: 240/208V
  • Max Power Rating: 11,400VA
  • Transformer Type: Built-in split-phase transformer
  • Simultaneous L1-N & L2-N Output: Maximum combined output of 11,400VA
  • Continuous Power for Energy Storage: 5kW maximum
  • Model: ATS 11400T-US
  • Category: Transformer

Why Choose Growatt 11.4K Split Phase Transformer

The Growatt ATS 11400T-US is more than just a transformer—it’s the backbone of a resilient, high-performance power system. Unlike generic alternatives, this unit is purpose-built to pair seamlessly with Growatt inverters, delivering the split-phase output required for modern homes and small businesses. Its integrated design saves valuable installation time and reduces potential points of failure, while the 5kW continuous energy storage capability ensures your batteries work harder when you need them most.

Whether you’re managing a large off-grid property or fortifying your home against grid instability, the 11.4K Split Phase Transformer offers the capacity and reliability you can trust. Backed by Growatt’s reputation for innovation and our Lowest Price Guarantee, you’re investing in peace of mind—backed by premium support and a commitment to your satisfaction. Upgrade your power infrastructure today with the transformer that keeps your energy flowing, no matter what.

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Frequently Asked Questions

This transformer is a standalone unit that typically requires professional installation by a qualified electrician. It ships as a single piece. Shipping costs and methods are not specified in the product data; please contact our support team for details on delivery options for this heavy item.
The Growatt 11.4K Split Phase Transformer (ATS 11400T-US) is designed to pair with compatible Growatt inverters to deliver split phase power. The product data does not list specific inverter models; please refer to the inverter's documentation or contact our support team to confirm compatibility for your system.
The transformer has a maximum power rating of 11,400VA (11.4kW) at 240/208V. The maximum sum of L1-N and L2-N simultaneous output is 11,400VA, and the maximum continuous power for energy storage is 5kW. Ensure your system's load does not exceed these limits.
The product data specifies that the ATS 11400T-US includes a built-in transformer but does not detail the specific materials used. For technical specifications on construction materials, please contact our support team or refer to the manufacturer's documentation.
The product data does not include specific maintenance instructions for this transformer. As with most electrical equipment, we recommend periodic visual inspections for damage and ensuring proper ventilation. For detailed maintenance guidelines, consult a qualified electrician or the manufacturer's manual.
Your satisfaction is guaranteed with a Lowest Price Guarantee, as stated in the product data. Specific return policy terms, warranty duration, and support details are not provided. Please contact our customer service team for information on returns and technical support for this transformer.
This transformer is built for larger residential and small commercial off-grid or backup power systems that require stable split phase power. It is intended for use with compatible Growatt inverters and is ideal for users needing reliable performance in off-grid or backup applications.
SKU: 1519095-AR Categories: , Brand:

The Off Grid Vault Promise

Every product we carry is vetted for real-world performance. 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 surprise charges at checkout.
Authorized Dealer Support We are an authorized dealer. Warranty claims go through us directly — not through a faceless ticket queue.

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