Sterling Power I244000 Pro Power Q 24v, 4000w Inverter PN: I244000
Sterling Power Products LTD

Sterling Power I244000 Pro Power Q 24v, 4000w Inverter PN: I244000


Sterling Power - Pro Power Q 24v, 4000w Inverter

PN: I244000

excl. VAT £856.80
(incl. VAT £1,028.16)

230V 50Hz Quasi Sine Wave Inverters:

Socket Type Voltage DC Power (continuous) Watts Size L x W x D mm Weight Kg Part Number
Universal 12 100 65 dia 145 0.2 I12100
Universal 12 150 100 oval 145L 0.3 I12150
British / Euro 12 150 100 oval 145L 0.3 I12150CT
Universal 12 200 65 dia 145 0.3 I12170T
British / Euro 12 350 150 x 150 x 65 1.0 I12350
British / Euro 12 600 230 x 150 x 65 1.3 I12600
British / Euro 12 800 270 x 150 x 65 1.8 I12800


1000 - 2700 Watt includes remote control and 10m cable

Socket Type Voltage DC Power (Continuous) Watts Size L x W x D mm Weight Kg Part Number
British / Euro 12 1000 240 x 250 x 100 2.0 I121000
British / Euro 12 1800 300 x 250 x 100 4.0 I121800
British / Euro 12 2700 370 x 250 x 100 5.0 I122700
British / Euro 12 4000 700 x 250 x 250 10.0 I124000
British / Euro 12 5000 700 x 250 x 250 10.0 I125000


24V versions

Socket Type Voltage DC Power (continuous) Watts Size L x W x D Weight Kg Part Number
Universal 24 100 65 dia 145 0.3 I24100
Universal 24 150 100mm oval 145 0.3 I24150
British / Euro 24 150 100mm oval 145 0.3 I24150CT
Universal 24 200 65 dia 145 0.3 I24170T
British / Euro 24 350 150 x 150 x 65 1.0 124350
British / Euro 24 600 230 x 150 x 65 1.3 I24600
British / Euro 24 800 270 x 150 x 65 1.8 I24800


1000 - 2700 watt including remote control and 10m cable

Socket Type Voltage DC Power (continuous) Watts Size L x W x D mm Weight Kg Part Number
British / Euro 24 1000 240 x 250 x 100 2.0 I241000
British / Euro 24 1800 300 x 250 x 100 4.0 I241800
British / Euro 24 2700 370 x 250 x 100 5.0 I242700
British / Euro 24 4000 700 x 250 x 250 10.0 I244000
British / Euro 24 5000 700 x 250 x 250 10.0 I245000


General opinion over the last few years was that the quasi-sine wave inverter was dead and the pure sine-wave inverter would rule the world  (an opinion not shared by Sterling). Sales of quasi-sine wave inverters have continued to out-grow sales of pure sine-wave, proving that there is plenty of life left in this technology. The principle reason is that most of the equipment such as mobile phones, TV's, drill chargers and all that type of equipment which used to have a problem working with quasi-sine wave tends to now work fine on quasi-sine as the effected equipment tends to use a switch mode power supply in the design which works fine with quasi sine wave. This meant that rather than the problems getting worse over the years the problems have diminished, however, this is not to say that the odd microwave, drill, vacuum cleaner would not work (if there is a thyristor control circuit employed then this can still be an issue) but there is no question this is becoming more rare as the years go past, plus, it usually is a lot cheaper to replace a £35 microwave to a different model which will work rather than spend £700 on a sine wave model to make it work .

Sterling has invested in a new range of  quasi-sine inverters because they are smaller, lower cost, offer better performance, are more efficient and more reliable than sine-wave. We, at Sterling, have always found the quasi-sine wave inverter more than adequate for general requirements in boats and vehicles. There is still the odd appliance, such as washing machines, where quasi-sine wave inverters simply do not work but all in all they do a great job - especially considering their cost. With this in mind, we have made a new range of DIGITAL quasi-sine inverters called the Pro Power Q. The idea behind this was to push forward this technology and bring in some new features. The most obvious change in this new inverter is its style, tough aluminum extrusion with great looking plastic end caps. Euro and British sockets are on all this range, enabling the unit to be compatible across Europe without problem. The new extrusion design has allowed us to reduce the size of the 1000-2500W units by nearly 40% but still offer their full power and even better performance over the previous models. If you also require a battery charger then look at our new Pro Combi Q range.
'Noisy fans' was always a favorite complaint with our standard range, So for power to size ratio, this new larger size Pro Power Q range is simply unchallenged.

150W oval style is available in 2 versions
I12150 = This model is the most popular with a universal socket which can be used for all different plugs round the world.
I12150CT = This model has a British socket on one side and a German style socket on the other, This unit tends to be used where companies want to have the inverter standard rated as a mains power source, where in actual fact it is an isolated power supply.

New turbo coke can inverter:
The popular 100 watt inverter which can lie flat or fits in a standard coke can holder in cars / lorries / boats now has a new big brother which keeps the same convenient style and application, but now has an internal fan to keep it cool. The end result is that it can produce a comfortable 170 watts. The new turbo model is about 20 mm longer and requires either an open cup holder or a cup holder with at least 5 mm larger diameter than the unit to allow the fan enough room to let the air flow through the product.

The quasi sine wave inverter is by far the most popular for the above reasons. All Sterling inverters are continuously rated, with all the usual overload, over voltage and low voltage cut outs, all the inverters come with cable and 24 kt gold connectors, in order to prevent battery terminal corrosion. Available in 230V for UK and Europe and also 110V for building sites / off vehicle use or for equipment supplied on boats made in the USA (not suitable for washing machine / some bread makers).

When will my item be delivered?
We aim to deliver within 1-3 working days. In 2023 98% of orders were received within 3 days.
During sale periods, please allow some additional time. We will attempt to call or email you if we become aware of an unexpected delay.

Do the products come with warranty?
Rest assured, all our products have a manufacturer's warranty ranging from 1 to 5 years! Most items will have the length of warranty in the description, but if it isn't visible and you would like to know, please contact us.

Is there tracking on my order?
All of our orders are sent via trusted couriers that will provide tracking. Please ensure that your correct email and phone number are entered to ensure that you receive the tracking details.

Do you ship outside of the UK?
We ship worldwide! Please email us with what you would like to order so we can provide you with a quote and remove VAT if necessary. A shipping quote will also be provided with the quote.

What courier will deliver my parcel?
We use DPD for parcels delivered within the UK. For international deliveries, we normally use FedEx or DHL.

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