SureSine Classic
The SureSine™ Classic is a compact, dependable off-grid inverter designed to convert DC power to clean AC power for rural electrification, remote installations, and light industrial applications. Its cast anodized aluminum enclosure, encapsulated circuitry, and sealed fanless design support reliable, long-term operation in demanding environmental conditions.
Specifications & Certifications
| Model | 
SI-300-115V-UL (60 Hz) |
SI-300-220V (50 Hz) |
|---|---|---|
| Continuous Power Rating | 300 Watts @ 25C | 300 Watts @ 25C |
| Pek Power Rating (15 min.) | 600 Watts @ 25C | 600 Watts @ 25C |
| DC Input Voltage | 10.0V – 15.5V | 10.0V – 15.5V |
| Waveform | Pure sine wave | Pure sine wave |
| AC Output Votage (RMS) | 220V or 115V +/– 10% | 220V or 115V +/– 10% |
| AC Output Frequency | 50 or 60 Hz +/– 0.1% | 50 or 60 Hz +/– 0.1% |
| Nominal Battery Voltage | 12V | 12V |
| Peak efficiency | 92% | 92% |
| Total Harmonic Distortion (THD) | <4% | <4% |
| Self Consumption (Inverter ON – no load) | 450mA | 450mA |
| Self Consumption (Inverter OFF) | 25mA | 25mA |
| Self Consumption (Standby) | 55mA | 55mA |
| Operating Temperature Range | -40 C to +45C | -40 C to +45C |
| Warranty | 2 Years | 2 Years |
| CE and RoHS compliant | Yes | Yes |
| ETL Listed [UL-458] | Yes | |
| FCC Class B Part 15 Compliant | Yes | Yes |
| Manufactured in a Certified ISO 9001 Facility | Yes | Yes |
Key Features
- Improved Load Operation – Pure sine wave provides quality AC equivalent to grid power. Toroidal transformer design generates good wave form throughout the range of input voltages. Handles 200% surge up to 600W
- High reliability – No internal cooling fan or other moving parts. Uses epoxy encapsulation, conformal coating, stainless steel hardware and an anodized aluminum enclosure to protect against harsh tropical and marine environments
- More power available – High efficiency and low self consumption maximizes power to the loads. Automatic stand-by reduces consumption during no load consumption
- Speaks Modbus, and SNMP with the optional EMC-1 adapter
- Other Features
• More Information – the two LEDs provide important information to the user about system status and any fault conditions. An optional digital meter may be connected to the SureSine to display additional system information.
• Remote On/Off – improves safety by making it easy to install the SureSine in an inaccessible location or enclosure. Reduces system cost by avoiding the need to add an AC safety disconnect to the system.
• Adjustability & Communications – four DIP switches provide easy adjustability of several system parameters. Additional adjustability is possible using Morningstar’s USB MeterBus Adapter (UMC-1) to connect to a PC. Free 3rd-party MODBUS software is available for custom programming. IP-based communication, including SNMP, is enabled through Morningstar’s Ethernet MeterBus Converter (EMC-1).