RIIO SUN-II 3KVA/24V SOLAR INVERTER 150V/80A-(TBB)

Description

The RiiO Sun II 3KVA/24V is a compact all-in-one transformer-based hybrid solar inverter for backup power, off-grid, and ESS applications. It combines a pure sine wave inverter, a battery charger, a single MPPT solar charge controller, and a 4ms automatic transfer switch in a single unit. The transformer-based design handles surge loads at 300% rated power making it reliable for fridges, pumps, and motor-driven appliances. With battery-optional operation and support for parallel and three-phase configurations via the RiiO Mate accessory, the 3KVA is an efficient, scalable entry-level solution in the RiiO Sun II range.

Key Features

• All-in-One Design: Integrates a pure sine wave inverter, dual MPPT solar charge controllers, a 35A AC battery charger, and a 4ms automatic transfer switch in a single compact unit, simplifying installation and reducing wiring complexity.
• Transformer-Based Construction: The heavy-duty transformer core provides exceptional surge handling at 300% rated power 
• High MPPT & Inverter Efficiency: Achieves up to 98% MPPT efficiency and 91% inverter efficiency, maximizing energy capture and utilization.
• Fast Transfer Time : Short 2ms transfer time protects mission-critical loads during power interruptions.
• Scalable Parallel & Three-Phase Operation: Supports parallel and three-phase operation via the RiiO Mate accessory scaling up to 36KVA for larger installations.
• ESS & Peak Shaving Ready: Integrates with the TBB E4 LCD Monitor for advanced energy storage system features including peak shaving, time-of-use energy management, and self-consumption optimization.
• AGS Generator Control: Automatic Generator Start function activates the generator only when solar and battery power are insufficient minimizing fuel consumption and automating hybrid energy management.
• ECO Mode: Reduces inverter standby power consumption during periods of low load, extending battery backup time and minimizing energy waste.

Technical Specifications:

• Model: RIIO SUN II 3KVA/48V SOLAR INVERTER -(TBB)
• Type: Transformer-Based Hybrid Solar Inverter
• Terminal Type: Lugs 
• Nominal Battery Voltage: 24V
• Weight: 18Kgs
• Dimensions: L: 144 W: 217 H: 499

Ideal For:

• Small-to-mid scale solar systems (comfortably powers lighting, TVs, fans, computers, fridges, and other essential appliances), Off-grid and energy storage system (ESS) installations, Homes and small businesses, Self-consumption and grid feed-in setups looking to reduce reliance on grid power, Systems planning future expansion (supports parallel/three-phase scaling)

Why Choose TBB Solar Inverter?

Most solar installations require separate devices for inverting, charging, and switching but this inverter eliminates all of that in a single transformer-based unit. Its heavy-duty transformer core handles surge loads at 300% rated power  pumps, compressors, and motor-driven appliances that lighter switchmode inverters struggle with. The 60A MPPT controller with 250V open circuit voltage supports long panel strings efficiently, the 4ms transfer switch keeps critical electronics running without interruption, and parallel support via RiiO Mate means the system scales to 36KVA without replacing any hardware. One unit. Real-world reliability. Room to grow.