FREE SHIPPING on orders over $100 for qualified items.
Click to call now

Magnum Energy MS3748AEJ Inverter

Magnum Energy logo
Magnum Energy:
  • Wide range of inverter/chargers for any application
  • Easy to set up and use
  • Industry-leading durability
  • Made in USA

Product Information

Model Part No. Watts Input
Type Price
Magnum Energy MS3748AEJ Inverter29374423700W48VDC230VACPure sine wave
Ships from manufacturer in 3-4 weeks
Do you have questions about our Magnum Energy inverters, or questions about solar in general? Give us a call at 1-800-472-1142.

Is Magnum Energy the best inverter choice for my project?

Watch Video


Easy to install and use - For 120/240V, 50Hz applications (outside the US specifically for Jamaica)
The MS-3748AEJ is a versatile inverter that can output 120/240-volts of AC power. The two 120VAC output lines are 180° out-of-phase with each other, so that the combination of the L1 and L2 lines total 240VAC and the voltage between either L1 or L2 and neutral is 120VAC. Connect this inverter to a 48-volt battery bank for a reliable off-grid power solution. Magnum Energy products are known for their impressive features and outstanding reliability, making them a go-to off-grid inverter. The MS-AEJ series of inverters are backed by a trusted 2-year parts and labor warranty. The MS-3748AEJ inverter/charger is a cost-effective, easy to use solution for your 120 or 240-volt off-grid power needs.

Some of the highlighted features of this inverter include:

  • Power factor correct charging is included in all Magnum inverter/chargers, this useful feature uses 25-30% less AC current when connected to a generator or shore power.
  • Power switch to quickly turn on/off
  • Lightweight and easy to install
  • Easy to access AC terminal blocks
  • Current overload protection enables the inverter to automatically shut down if the output wattage is exceeded or a short in the wiring is detected.
  • Automatically shuts down if abnormal voltages or temperatures are detected, protecting your expensive batteries.
Back to Top

Features & Attributes

  • Dimensions (LxWxH): 19 × 15 × 13 inches
  • 120/240Vac 50hz (for Jamaica, Barbados and other areas requiring split phase 50Hz)
  • MPN: MS3748AEJ
Back to Top


Magnum Energy MS3748AEJ Inverter

Product Manual
Spec. Sheet

Magnum Energy ME-ARC Inverter Remote - Sold Separately

Installation Manual
Router and Remote Comparison
Back to Top

About Magnum Energy

When Xantrex bought Trace, a few of their key people started Magnum Energy. Established in 2002 in Everett, Washington, Magnum Energy went on to make great strides in the renewable energy field with their high-quality inverters.
A company that doesn't just rest on their brand name, Magnum Energy's research and development team is constantly pushing the boundaries of inverter technology. They pioneered the technology behind power factor corrected battery chargers, which is in each and every one of their inverters. This innovation is the most efficient way to charge batteries. Magnum Inverters save you the time, money and hassle it takes to gas up your generators. Another nice feature of Magnum Energy inverters (whether they are 120 VAC or 240 VAC) is that they can accept 120 or 240 VAC power input to help charge the batteries without the use of a transformer.
Magnum Energy has also made advances with AC Coupling, which allows a solar power grid-tie system to work with a backup battery system that can be charged even during grid black outs. This is a perfect add-on for folks who want to include a battery back-up package to their pre-existing grid-tie system. Read more about AC coupling here.
Magnum Energy inverters are also good-looking, safe, easy-to-use and American-made. Wholesale Solar was one of the first renewable energy companies to distribute Magnum Energy. We carry all Magnum Energy Inverters for RV, Marine, or Back-up power. We have also have teamed up with Magnum Energy to create to power centers called the Mini-Magnum Power Centers. The MS4024PAE and the MS4448PAE Power Centers are perfect for offgrid living or AC coupling with a grid-tied system anywhere.
Back to Top
image of inverter guide
Download Your FREE Solar Inverter Guide
Manage Power Flow Like a Solar Pro! Download Now for Hassle-Free Hookup.