300W / 500W / 800W Modified Sine Wave Solar Inverter with MPPT/PWM Controller – Factory Direct
Our 300W-800W Modified Sine Wave Solar Inverters are designed for professional B2B solar energy projects, offering a reliable 3-in-1 solution that integrates inverter, charger, and MPPT/PWM controller in one compact unit. Supporting 12V/24V DC input and compatible with lead-acid and lithium batteries, these inverters ensure stable DC to AC conversion for commercial, industrial, and off-grid applications. With intelligent temperature control, smart safety chip protection, and multiple security protections, they deliver high efficiency, operational stability, and long-term reliability — making them an ideal choice for system integrators, distributors, and bulk buyers seeking factory-direct supply.
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Description
Reliable Modified Sine Wave Solar Inverters for Off-Grid Systems
Our 300W, 500W, and 800W modified sine wave inverters are high-performance 3-in-1 inverter chargers designed for B2B customers seeking reliable solar energy solutions. Built-in MPPT/PWM controllers allow seamless adaptation to 12V or 24V DC input and compatibility with lead-acid or lithium batteries. These inverters can be directly connected to solar panels, offering flexible power and voltage ranges, real-time monitoring, temperature control, and multiple safety protections including reverse connection, over-voltage, and under-voltage.
Ideal for commercial installations, off-grid solar systems, and industrial applications, these inverters combine high efficiency, smart protection, and user-friendly interfaces to meet diverse power management needs.
300W-800W Modified Sine Wave Solar Inverter Features
- 3-in-1 Inverter Charger: Combines inverter, charger, and solar controller in a single compact device for commercial and industrial applications.
- Built-in MPPT/PWM Controller: Optimizes solar panel charging efficiency and adapts to 12V/24V DC input for lead-acid or lithium batteries.
- Smart Chip Protection: Provides reliable protection against overload, short-circuit, and abnormal voltage conditions.
- Ultra-Silent Thermo-Activated Fan: Ensures effective cooling without generating distracting noise, suitable for commercial installations.
- LCD Display & USB Ports: Real-time monitoring and optional fast charging (QC3.0 18W) for user convenience.
- Multiple Safety Protections: Includes reverse connection, over-voltage, under-voltage, temperature, and overload protections for industrial-grade reliability.
300-800W Modified Sine Wave Solar Inverter Specifications
| Model | DF-M03K(P10) | DF-M05K(P20) | DF-M08K(P30) |
|---|---|---|---|
| DC Input Voltage | 12V / 24V | 12V / 24V | 12V / 24V |
| Built-in Controller | 150W | 300W | 600W |
| Controller Mode | PWM | PWM / MPPT | MPPT |
| Recommended Solar Panel | 100-150W | 250-300W | 500-600W |
| Solar Panel Voltage Range | 15-22Vdc | 15-60Vdc | 15-60Vdc |
| Max Solar Input Power | 180W | 450W | 720W |
| Max Charging Voltage | 14.2Vdc | 28.4Vdc | 14.2Vdc / 28.4Vdc |
| Battery Type | Lead-acid / Lithium | Lead-acid / Lithium | Lead-acid / Lithium |
| Rated AC Power | 300W | 500W | 800W |
| AC Output | 220V / 110V, 50/60Hz | 220V / 110V, 50/60Hz | 220V / 110V, 50/60Hz |
| Waveform | Modified Sine Wave | Modified Sine Wave | Modified Sine Wave |
| Efficiency | Up to 90% | Up to 90% | Up to 90% |
Protection & Safety:
- Reverse Connection Protection
- Low & High Voltage Protection with Auto Recovery
- Overload & Short Circuit Protection
- Output Temperature Protection (>90°C)
Environment & Installation:
- Operating Temperature: 0℃ ~ 40℃
- Humidity: 0-80%
- Remote Control Switch Interface: Standard Configuration
- Compact Dimensions: 159×120×72 mm – 179×120×72 mm
USB Output:
- Standard: 5V 2A
- Optional: QC3.0 18W Fast Charging
Why Choose Our Inverters?
- Factory Direct Supply: Competitive pricing for bulk B2B orders.
- Flexible Solar Integration: Supports multiple panel types and DC input configurations.
- High Reliability: Designed for industrial and commercial off-grid applications.
- Smart Monitoring: Real-time LCD display, USB output, and safety alarms for easy operation.
FAQ – 300W-800W Modified Sine Wave Solar Inverters for B2B
Q1: What is a Modified Sine Wave Solar Inverter and why is it suitable for B2B projects?
A1: A modified sine wave solar inverter converts DC power from solar panels or batteries into AC power efficiently. Our 300W-800W inverters are ideal for commercial and industrial applications, providing stable output for sensitive equipment while reducing installation complexity and costs.
Q2: Can these inverters work with both lead-acid and lithium batteries?
A2: Yes. These MPPT/PWM controlled inverters support lead-acid and lithium batteries, offering flexibility for B2B energy storage solutions, off-grid systems, and hybrid solar projects.
Q3: How do built-in MPPT and PWM controllers improve solar charging efficiency?
A3: The built-in MPPT/PWM controller automatically optimizes solar panel voltage and current, increasing charging efficiency up to 90%, ensuring faster and more reliable power management for commercial solar setups.
Q4: Are these inverters suitable for industrial and commercial applications?
A4: Absolutely. With 3-in-1 inverter charger design, smart chip protection, and multiple safety mechanisms, these inverters are perfect for off-grid systems, industrial equipment, and commercial solar installations requiring stable AC power.
Q5: What safety features protect my equipment and investment?
A5: Our inverters include reverse connection, over-voltage, under-voltage, overload, short-circuit, and temperature protections, minimizing risks and ensuring long-term reliability for B2B installations.
Q6: How easy is it to monitor and control these inverters?
A6: All models feature LCD displays and USB ports for real-time monitoring. Optional QC3.0 fast charging is available, allowing easy integration into commercial energy systems and remote management.
Q7: What solar panel specifications are recommended for 300W-800W inverters?
A7: Recommended panels:
- 300W inverter: 100-150W, 18V-36V
- 500W inverter: 250-300W, 18V-36V
- 800W inverter: 500-600W, 36V
This ensures maximum efficiency and compatibility for industrial or commercial solar arrays.
Q8: Why choose factory direct supply for B2B solar inverters?
A8: Ordering direct from the manufacturer ensures competitive pricing, consistent quality, and customized support for bulk B2B orders, making it ideal for system integrators and industrial clients.
