12v 500 Watt Inverter Modified Sinewave 500w

£37.99 Inc Vat 31.66 Ex Vat)

500w Continuos Power Inverter (1000 watt Peak Power)
Product Brand: Marxon
Product Code: MSI-500
Product Condition: New
Product Weight: 0.83kg
Delivery CostsDelivery from £5.99
12v 500 Watt Inverter Modified Sinewave 500w

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12v 500 Watt Power Inverter Modified Sinewave (1000 Watt Peak)

Includes: Safety guide Manufacturer Warranty - 1 year warranty

500 Watt continuous / 1000 Watt Peak

This high quality Marxon 500 Watt continuous use / 1000 Watt Peak Power Inverter Modified Sinewave enables you to operate your 230v UK standard appliances “Outdoors” using a 12v battery or portable 12v power source by using the included battery clips

Special Features:
Overload protection: Automatically shuts down when continuousdraw exceeds rated continuous watt;
Over voltage protection: Automatically shut down when input exceeds 16±1VDC;
Low voltage Alarm: Audible when battery dischargesto 10.5±0.5VDC;
Under voltage protection: Automatically shuts down when input is less than 10.0±0.5VDC;
Thermal protection: Automatically shuts down when housing temperature exceeds 70 centigrade.

  • Output Socket 1 = AC Socket: UK 3 Pin
  • Output Socket 2 = 5v 500mA USB
  • Maximum continuous power: 500W
  • Surge capability (peak power): 1000W
  • Optimum efficiency: 90%
  • No-Load Current Draw: 0.3 AMP
  • Wave form: Modified Sine wave
  • Input voltage range: 12v (11-15V) DC
  • Output Voltage Range: 230V 10%
  • Output Protection: 30A Fuse (Replaceable)
  • Working Temperature: -20C - 55C
  • Dimensions: Length = 193mm x Width 124mm x Height 54mm


This table is a guide for reference purposes only, some appliances may vary

Cordless drill charger 15w Food processor 310w
Camcorder charger 25w Bench grinder 395w
Mobile phone charger 30w Belt sander 410w
DVD 45w Jigsaw 410w
14" colour tv 80w In-car fridge 575w
Laptop 90w Microwave 6 cu. ft. 598w
20" colour tv/vcr/dvd 120w Hammer drill 800w
Fax machine 170w Table circular saw 1000w
18" 3-speed fan 207w Vacuum cleaner 1000w
Spotlight/worklight 250w Kettle 1000w

Inverters Explained
The primary job of an inverter is to convert the DC (Direct Current) power from the battery bank or solar panels to AC (Alternating Current) power needed for most appliances. To do that, it must take the constant DC voltage and change it to a sine wave curve that goes above and below 0 volts. When inverters first came out, the most common way to do this was to make the voltage go straight up and down, creating a blocky signal. This is called modified sine wave, seen in orange in the image below. More advanced modified sine waves make multiple steps, trying to come close to a pure sine wave

Modified Signwave vs Pure Signwave

Modified Sign Wave Invterters
80% of equipment will run on this type of inverter, although there are some exceptions. If in doubt as to whether your appliances can run on a modified sine wave, always check with the manufacturer of your appliance before purchasing

We Recommend Pure Sign Wave For The Following Equipment
Laser printers, photocopiers, and anything with an electrical component called a thyristor
Anything with a silicon-controlled rectifier (SCR), like those used in some washing machine controls
Some fluorescent lights with electronic ballasts
Some battery chargers for cordless tools
Some new furnaces and pellet heaters with microprocessor controls
Digital clocks with radios
Appliances having speed/microprocessor controls (like some sewing machines)
X-10 home automation systems
Medical equipment such as oxygen concentrators


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