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Catalogue · 2 products

Commercial 3-Phase Inverters

Power large-scale solar installations with Rocksolar's commercial three-phase inverters, built for businesses, industrial facilities, and other high-demand applications. This collection ranges from an 18kW all-in-one hybrid unit up to Sol-Ark's 60kW three-phase system, giving you options across a wide span of commercial power requirements.

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Most models here support hybrid operation, combining grid-tie and off-grid capability so a facility can draw from solar, battery storage, or the utility grid as needed. The WIT 28kW inverter adds AC-coupled hybrid storage compatibility, making it straightforward to pair with an existing battery bank or add one down the road.

Built for the demands of commercial and industrial energy systems, these inverters are designed to deliver dependable three-phase power at the scale larger operations require.

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Commercial 3-Phase Inverters
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Choose an inverter for how you use power

Inverter typeBest forConfirm before ordering
Pure sine wave inverter (12V/24V)Running AC appliances from a battery in an RV, boat, van or cabinBattery voltage matches; continuous watts cover your loads together; surge covers motor starts
Off-grid solar inverterHomes and cabins with no grid connectionBattery voltage, PV input voltage and current limits, 120V or 120/240V split-phase output
Hybrid inverterGrid-connected solar with battery backupBattery compatibility list, backup output and utility interconnection requirements
Grid-tie inverter or microinverterSolar that feeds the grid with no batteriesUtility approval; does not supply power during an outage unless the listing says so

Add up the watts of everything that can run at the same time, then allow headroom. Motors, pumps, compressors and well pumps can draw several times their running watts for a moment when they start. That figure must fit within the inverter's surge rating.

Not included unless listed

  • Batteries, solar panels and charge controllers
  • DC cables, fuses, breakers and disconnects
  • Transfer switch, permits, electrician and installation
Do I need 120V or 120/240V split-phase?

Most plug-in appliances use 120V. Well pumps, ranges, dryers and many home panels need 240V, which requires a split-phase inverter or stacked units.

Can a grid-tie inverter power my home during an outage?

Standard grid-tie inverters shut down when the grid goes down. For backup, choose a hybrid or off-grid inverter with batteries.

What size cable do I need on the battery side?

It depends on the inverter's maximum DC current and the cable length. Follow the inverter manual and have high-current DC wiring checked by a qualified installer.

12V/24V pure sine wave inverters · Off-grid home inverters · Hybrid inverters · Grid-tie inverters · Size a system

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