Mean Well ISI-501-148C True Sine Wave DC-AC Inverter 500W 110V out 12V in with MPPT Solar Charger

The ISI-501-148C is a 500W true sine wave DC-AC inverter with a built-in MPPT solar charger. It is suited to off-grid and mobile power applications where clean 110V AC output and solar charging support are both needed. This makes it a practical option for professional and industrial power systems that use a DC battery source.

This model provides 110V AC true sine wave output with total harmonic distortion below 3%. True sine wave output is important for running sensitive electronics and equipment that require cleaner power than modified sine wave units. It is also rated for 500W continuous output.

Yes, this model includes a built-in 500W MPPT solar charger. Mean Well lists the typical MPPT efficiency at 98%, which helps maximize solar energy harvesting. That integration can reduce the need for a separate charger in solar-based power systems.

The specified input voltage range for the ISI-501-148C is 42 to 60VDC. Buyers should confirm their DC system operates within that range before selecting this model. Staying within the rated range is important for proper inverter performance and protection behavior.

The product data lists support for open and sealed lead acid batteries. That makes it suitable for systems built around those battery chemistries. If your application uses a different battery type, it is worth confirming compatibility before purchase.

The ISI-501-148C is rated for 500W continuous power and supports surge power up to 1000W. Its overload protection allows 110% load for 60 seconds, then shuts down the output voltage and requires re-powering to recover. This gives some headroom for brief startup peaks while still protecting the unit.

This inverter includes battery low alarm, battery low shutdown, over voltage, over temperature, output short, input polarity reverse, and overload protection. The product data also notes recovery by re-powering after overload, over-temperature, and output short shutdown events. These protections are useful in demanding commercial or industrial environments.

It is rated for operation from -20°C to +40°C at 100% load. The product data also states 60°C at 50% load, so reduced loading is required at higher ambient temperatures. A thermostatically controlled cooling fan is included to support thermal management.

The ISI-501-148C measures 205 x 158 x 67 mm and weighs 2.35 kg. Mean Well specifies a 3-year warranty for this model. Those details can help when comparing compact inverter options for space-constrained enclosures or equipment cabinets.