Morningstar SureSine Sealed 300w Pure Sine Wave Inverter

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Specifically designed as an ultra-reliable, ultra-clean permanent power inverter solution. Morningstar's Sure Sine is an all-around excellent option for caravan and RV use as well as smaller renewable energy installations such as sheds, huts and more.

Morningstar's SureSine pure sine wave invertor is a development based on Morningstar's 25 years of experience with remote off-grid photovoltaic systems. Providing pure sine wave power specifically designed for the demands of rural PV electrification and requiring of clean AC power for sensitive electrical equipment such as telecommunications, computing, Hifi and more.

The SureSine's combination of performance, features and competitive price provides the best small inverter value on the market. It is highly reliable, having no internal cooling fan or other moving parts prone to failure.


Continuous Power Rating: 300 Watts at 25 Degrees Celsius
Peak Power Rating (10 minutes): 600 Watts at 25 Degrees Celsius
DC Input Voltage: 10.0v-15.5v
Waveform: Pure sine wave
AC Output Voltage (RMS): 220V or 115V +/– 10%
AC Output Frequency: 50 or 60 Hz +/– 0.1%
Peak Efficiency: 92%
Total Harmonic Distortion (THD): < 4%
Self-Consumption Inverter On (no load): 450mA
Self-Consumption Inverter Off: 25mA
Self-Consumption Stand-by: 55mA
Low Voltage Disconnect (LVD): 11.5b or 10.5v
Low Voltage Reconnect: 12.6v or 11.6v
LVD Warning Threshold (buzzer): 11.8v or 10.8v
LVD Delay Period: 4 minutes
High Voltage Disconnect: 15.5v
High Voltage Reconnect: 14.5v
Standby On Threshold: 8 Watts
Standby Off Threshold: 8 Watts
Dimensions 213 x 152 x 105 mm
Weight 4.5 Kg
AC Terminals Max. Wire Size: 4 mm2 / 12 AWG
DC Terminals Max. Wire Size: 2.5 to 35 mm2 14 to 2 AWG

Product brochure / datasheet can be downloaded by clicking the PDF icon just below the main image.


Product Videos

Model # SI-300-220V


24 Month Manufacturer Warranty

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