WZRELB Modified Sine Wave Inverter

500 Watt WZRELB Modified Sine Wave Inverter

• Economical Modified Sine Wave Power: This RBX 500W modified sine wave inverter delivers 500W continuous power and 1000W peak surge power. It supports 12v / 24v DC input versions and can be configured for AC output 100v / 110v / 120v / 220v / 230v / 240v, making it a practical choice for mobile, backup and off-grid use where basic AC power is needed at a more budget-friendly cost.
  
• Practical for Everyday Loads: Suitable for phone chargers, lights, routers, small fans, portable coolers and other basic daily-use loads. Modified sine wave output works well for many common loads, especially resistive loads and simple daily-use electronics within the rated wattage range.
  
• LED Display and On-Unit Control: The front-panel LED display helps monitor operating status more easily during use. This model is operated directly from the inverter body with a practical power switch for straightforward daily operation.
  
• Soft Start and Multi-Protection: Built-in soft start helps the output rise more smoothly at power-on. The inverter also includes overload, low-voltage, over-voltage, over-temperature, short-circuit and reverse-polarity protection for safer operation.
  
• Customizable Output Socket: AC output can be configured as 100v / 110v / 120v / 220v / 230v / 240v. Socket type can be customized for different markets. Please leave your required input voltage, output voltage, frequency and socket type when ordering.
  
• Compact Aluminum Housing: Measuring about 6.69 x 3.86 x 2.56 inches and weighing about 1.41 lbs, this inverter is easy to install in vehicles, RVs, cabins and small backup systems. This compact RBX design includes a front USB port, LED display and a single AC outlet for practical travel and backup use.
  
• Note: Modified sine wave inverters are suitable for many common appliances, but they are not the best choice for some highly sensitive electronics, precision equipment or loads that specifically require pure sine wave power.
  

Attentions for resistive load applications:

If you need the inverter to run resistive loads such as lights, chargers, small TVs, routers, simple heating loads and other common appliances within the rated range, please choose an inverter with continuous power higher than the appliance's rated power. For longer service life, it is better to keep daily operation around 70% to 80% of rated power.

Attentions for inductive load applications:

If you use small fans, small pumps and other light motor loads with modest startup surge and other appliances with motors or compressors, please make sure startup surge stays within the inverter's peak power range. Inductive loads can require several times their running wattage at startup.

Warranty: 12 Months for Non-artificial damage.

Inverter Size (inch)	6.69 x 3.86 x 2.56
Net Weight (pound)	1.41
Wattage	500w
Peak Surge Power	1000w
DC Input Voltage	12v / 24v
DC Input Voltage Range	10-15v / 20-30v
AC Output Voltage	100v / 110v / 120v / 220v / 230v / 240v
Socket Type	Customizable
Output Frequency	50Hz or 60Hz
Output Waveform	Modified sine wave
No Load Power Consumption	<10W
Efficiency	Up to 90%
Low Voltage Alarm	10.0-10.5v / 20.0-21.5v
Low Voltage Shut Down	9.5-10.0v / 19.0-20.0v
Over Voltage Shut Down	15.5v / 30.5v
Overload Protection	Auto shutdown when load exceeds rated output
Short Circuit Protection	Instant shutdown protection
Reverse Polarity Protection	Internal fuse protection
Over Temperature Protection	Shut down automatically under overheat condition
Cooling Method	Cooling fan + aluminum housing heat sink
AC Output Connection	1 x AC outlet
USB Port	1 x USB 5V / 2.4A
Operating Temperature	32°F to 104°F / 0°C to 40°C
Working Humidity	20% to 90% RH non-condensing

 

Choose your spec from the size options. Please confirm your battery voltage (12v / 24v), AC voltage (100VAC or 110VAC or 120VAC or 220VAC or 230VAC or 240VAC) and frequency (50HZ or 60HZ) when ordering.

There is no auto-sense of the output voltage or frequency. Please choose one DC input voltage, one AC output voltage and leave your message about the socket type you need. Socket can be customized.

Note: Modified sine wave inverters are more suitable for general-purpose loads than highly sensitive electronics, medical devices or equipment that specifically requires pure sine wave output.

Do not connect the inverter directly to the utility grid, and do not use it in a sealed space without ventilation.

 

1. What kind of appliances is this modified sine wave inverter suitable for?

It is suitable for many common loads such as lights, chargers, fans, small TVs, simple tools and other basic appliances within the rated wattage range. For sensitive electronics or equipment that specifically requires pure sine wave power, we recommend choosing a pure sine wave inverter instead.

2. Can I order 12V or 24V input, and can the output voltage and socket be customized?

Yes. This RBX series page supports 12v / 24v input versions. Output voltage can be configured as 100v / 110v / 120v / 220v / 230v / 240v, and the socket type is customizable. Please leave your required input voltage, output voltage, frequency and socket type when ordering.

3. Can I add a fuse or breaker between the battery and inverter?

Yes. We recommend using a suitable fuse or DC breaker between the battery and inverter. A common reference is: inverter power / input voltage = approximate DC current. Higher-wattage models and 12V systems require thicker cables and stronger battery support.

4. Why does the inverter shut down when running loads?

Common reasons include overload, low battery voltage, high battery voltage, poor cable connection, cable that is too thin, weak battery capacity or over-temperature protection. Check the battery condition, cable connection, cable size and ventilation around the inverter.

5. Can I run refrigerators, compressors or motor loads with it?

Some inductive loads may need much higher startup surge than their running power. Before connecting, make sure the appliance startup requirement stays within the inverter's 1000W peak surge power. If the load is difficult to start or highly sensitive, a pure sine wave inverter may be the better choice.

6. Why do sparks appear when connecting the battery cable?

A small spark can be normal when first connecting the battery because the inverter's internal capacitors charge instantly. This does not necessarily mean the inverter is faulty, but the polarity must be correct and the connection should be made carefully.

7. Can this inverter be used for long-time operation?

Yes. For better durability and thermal performance, we recommend using around 70% to 80% of the rated continuous power during extended operation. For the 500W model, this means keeping long-time daily load comfortably below the full rated limit whenever possible.