24 VDC to 12 VDC Power Converter non-isolated

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Delivery time:
10 business days (Austria), 12 business days (Europe), 15 business days (others)
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24 VDC to 12 VDC Power Converter non-isolated

Please select from the above options:

Current (Intermittent):
  • 3 A (6 A)
  • 6 A (10 A)
  • 12 A (18 A)
  • 18 A (21 A)
  • 24 A (30 A)
  • 50 A (60 A)
Protection-class IP65:
  • Yes
  • No

Product Description:

These products offer a convenient way to operate 12 VDC equipment such as professional communications and navigation equipment from the 24 VDC electrical systems found on diesel engine vessels.

Comprehensive range:

There are 12 products in the range from 3A to 50A in common earth configurations with the environmental protection class IP53 or IP65. They have been optimized for high volume 24 VDC to 12 VDC applications such as on commercial and leisure marine ships.

Fast Installation:

All units consume an off  load current of less than 15mA, which is probably less than the self discharge current of the ship's battery. In most cases this can be ignored, speeding the installation by removing the need to fit a remote switch.

All products fit onto a “Click ‘n’ Fit” mounting clip which is fixed in three points allowing it to be mounted on uneven surfaces.  It is easy to fit the clip into awkward places and then simply click the unit into position.

A green LED indicates when there is output from the converter. This gives reassurance to the installation engineer and speeds fault finding.

Technical Data:

Input voltage range

12 VDC, 24 VDC or 48 VDC +/- 30%

Output voltage

13,6 VDC or 27,2 VDC +15% -20% at extremes of temperature, load, input tolerance etc

Intermittent output power

Continuous rating +25% taken for a maximum of 2 minutes followed by 8 minutes rest

Transient voltage protection

Meets ISO7637-2 International standard for 24 VDC commercial vehicles

Electrostatic voltage protection

Meets ISO10605, ISO14982, >8 kV contact, 15 kV discharge

Output noise

<50 mV pk-pk (100 mV on 24 VDC units) at continuous load. Meets CISPR25.

Off load current (quiescent current)

<15 mA

Power conversion efficiency

Typically: 90% for non-isolated units, 85% for isolated units


>400 Vrms between input, output and case, on isolated products only

Mean time between failures

>162 years (HRD4)

Operating temperature

-25 °C to +30 °C to meet this specification table

+30 °C to +80 °C de rate linearly to 0 A

Storage temperature

-25 °C to +100 °C

Operating humidity

95% max., non-condensing


Anodized aluminum, glass filled polycarbonate, dust water and impact resistance to IP533 (excludes

DDi 24-24 240 which is ventilated and fitted with a cooling fan to IP20).


Four 6.3mm push-on flat blade connectors

Output indicator

Green LED adjacent to output terminals

Mounting method

Click ‘n’ fit mounting clip, fitted separately using three hole fixture

Safe area protection:

Over current

Limited by current sensing circuit

Over heat

Limited by temperature sensing circuit


Protected by filters and rugged component selection

Catastrophic protection

Protected by internal input and output fuses


2004/108/EC The general EMC directive

2009/19/EC The automotive directive

93/68/EEC The CE marking directive

Designed to

EN50498, ISO 7637-2.


CE and E (e) marked

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