Apollo Solar > Off-Grid Power > Off-Grid Products > True Sine Wave Inverters


The TSW is the ideal solution for residential and commercial off-grid systems in the 2kW-12kW range. It includes a DC to AC true sine wave inverter, battery charger, and AC transfer switch in a compact modular housing and provides 4000W at 48V.

Specified by Installers, Required by End-Users

The TSW4048 meets specifications provided by installers, distributors, and dealers and required by end users of battery-based PV power systems. The result is a single box that provides 120 and 240 volt AC power at 60Hz as well as 230 VAC at 50Hz. With a compact footprint and modest weight, the Apollo Solar TSW Inverter also provides ease of installation in tight spaces.

120/240 Volt AC Split-Phase Input and Output

200% Surge Power Capacity, Starts a 3HP Motor

Efficient Multi-stage Battery Charging

Advanced Apollo Solar Data Communications

Apollo Solar TSW True Sine Wave Inverter


  • True Sine Wave Output
  • 120/240 VAC Split-phase Operation or 120 VAC at Twice the Current or 230VAC 50Hz from the same unit
  • 200% Surge Power Capacity
  • Parallel Stacking of Multiple Inverters
  • High Current 5-stage Charging for Maximum Battery Life & Storage
  • Efficiency 93% for 24V, 94% for 48V
  • 2 Line LCD Shows Major Parameters
  • Optional Network Communications: Remote Internet Monitoring and Ethernet to Local Computers
Apollo Inverters with Switchgear Modules in 56kW stack
Apollo Inverters with Switchgear Modules in 56kW stack

Detailed Specs

Detailed specifications for the TSW4048 True Sine Wave Inverter/Charger.

TSW Inverter/Charger Spec Sheet – Part No. TSW4048