Dometic SINEPOWER DSP 424, 350 W, 24 V, Sine Wave Inverter


Available in 3 days, delivery time 2-6 days

Item number: 420-00040
Manufacturer Item-No.: 9600002542
EAN: 4015704263725
Product information


Your mobile socket!

Designed to turn 24 V battery power into pure 230 V AC, this compact sine wave inverter ensures reliable operation of low-power devices up to 350 W from the on-board battery. Integrated protection circuits prevent damage by overload, overheat, over- and under-voltage. The load- and temperature-controlled fan is pleasantly quiet.

The maximum load of 350 W ensures the reliable operation of electric toothbrushes, laptops, mobile phone chargers (USB-socket is available) and other low-power devices. Thanks to its large input voltage range, it also works fine in modern vehicles with smart alternators (EURO-6-compliant).

In case of an overload, the inverter cuts off to prevent damage; and it automatically comes on again when the situation is over. Another benefit is the low-noise fan, which flexibly adapts to the load and temperature conditions.

Output voltage: 230 V (± 10 %, pure sinus wave (THD <5%)
Output frequency: 50 Hz (± 0,5 Hz)
Maximum efficiency: >90 %
Input voltage: 24 V
Input voltage range: 20 - 33 V
Rated load: 350 W
Max. power for 1 minute: 400 W
Max. surge power for 1 second: 700 W
Idle current consumption: <0.4 A
Device dimension: 126 x 188 x 50 mm (Width x Length x Hight)
Weight ca.: 1.2 kg (2.6 lbs)
Heat dissipation: Temperature & load controlled fan
Ambient temperature operation: 0 °C up to +50 °C
Ambient temperature storage: -30 °C up to +70 °C
Air humidity: 0-95 %, not condensing

Protective devices

Input: Undervoltage
AC-Output: Overvoltage, short circuit, overload
Temperature: Shutdown
Short circuit protection: YES (lpk)

Overvoltage shutdown

Shutdown: 33 V
Restart: 31 V

Undervoltage shutdown

Shutdown: 20 V
Restart: 24 V

In the delivery are included

  • the inverter
  • one holder
  • fixing screws, and
  • a multi-lingual installation and operating manual
Inverters are used to convert DC voltage (12 V or 24 V) into 220/230 V AC voltage of 50 Hz. This is necessary if you are on pitches without shore power supply and want to use electrical devices in your vehicle that do not have a 12/24 volt connection. This could be, for example, a hair dryer, a coffee maker or a battery charger.

When choosing the right device, the maximum "nominal power" (or also called "effective power") is important. This "rated power" is given in watts. Every electrical device requires a certain "rated power" to operate. There are inverters that provide 1000, 2000 or 3500 watts of "nominal power". But also some that can "only" deliver 100, 150 or 350 watts.

Depending on the model, the hair dryer from the domestic bathroom can take up 2200 watts at the highest power level. With an inverter that can, for example, "only" deliver 1500 watts, this hair dryer will not work. But if you don't want to do without such a hair dryer away from any shore power supply, you would do well to adjust the performance of your inverter to the energy requirements of your 220/230 V devices. Even if several devices have to be in use at the same time, the sum of the total energy requirements must be taken into account in such cases.

An inverter is one thing. The board battery is the other!

Even the most powerful inverter can only "work" as long as the on-board battery allows with the amount of energy available. An inverter "only" converts the type of voltage, but does not generate any energy itself. The power supply, which is independent of shore power, is limited and depends exclusively on the energy stored in the on-board battery. A common on-board battery has a storage capacity of 100Ah (ampere hours). This means that such a battery can provide 100 amps for a period of one hour.

Said hair dryer with 2200 watts needs about 9.5 amperes at 230V voltage and a full continuous output of one hour. So if you (theoretically) just let this hair dryer run on, the on-board battery would be empty after another 9 hours. Therefore, the performance of the on-board battery(ies) installed in the vehicle should generally be taken into account when considering which 220/230 V devices are actually indispensable with an independent power supply. Also taking into account that a battery should not be discharged more than 50% in order to protect it.

Sine Wave - the difference between a "modified" and a "pure" sine!

Electrical devices, which are also used at home, need a "sine wave" (a current signal) that is as identical as possible for their function on the go. An inverter (as well as a voltage converter) emits a "modified" or a "pure" sine wave, depending on the model. The "pure" sine wave comes very close to the current signal of the domestic 230 V power supply, which means that most electrical devices can be operated from home in the caravan or mobile home. With a "modified" sine wave, it is not uncommon that devices such a laptop, an electric toothbrush or water pumps do not work!

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