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    24 VDC to 12 VDC Converter non-isolated

    €66,-* Goods to order; Europe 21 Days, RoW 24 Days
    24 VDC to 12 VDC Converter non-isolated... Show more
    12 variations Current: 3 A, Protection-class IP65: Yes

    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.

    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.

    All units consume an off  load current of less than 15mA, which is probably less than the self discharge current of the ships 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 information

    Input voltage range12 VDC, 24 VDC or 48 VDC +/- 30%
    Output voltage13,6 VDC or 27,2 VDC +15% -20% at extremes of temperature, load, input tolerance etc
    Intermittent output powerContinuous rating +25% taken for a maximum of 2 minutes followed by 8 minutes rest
    Transient voltage protectionMeets ISO7637-2 International standard for 24 VDC commercial vehicles
    Electrostatic voltage protectionMeets 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 efficiencyTypically: 90% for non-isolated units, 85% for isolated units
    Isolation>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 humidity95% max., non-condensing
    CaseworkAnodized 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).
    ConnectionsFour 6.3mm push-on flat blade connectors
    Output indicatorGreen LED adjacent to output terminals
    Mounting methodClick ‘n’ fit mounting clip, fitted separately using three hole fixture
    Safe area protection: 
    Over currentLimited by current sensing circuit
    Over heatLimited by temperature sensing circuit
    TransientsProtected by filters and rugged component selection
    Catastrophic protectionProtected by internal input and output fuses
    Approvals2004/108/EC The general EMC directive
     2009/19/EC The automotive directive
     93/68/EEC The CE marking directive
    Designed toEN50498, ISO 7637-2.
    MarkingsCE and E (e) marked

    Manufacturer information

    • Manufacturer: Alfatronix Limited
    • Partnumber: PV50s


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