Converters and Power Supplies for the Communications, Automotive & Marine Industries



These products offer a convenient way to operate mass produced 12Vdc equipment such as cell phones, in car entertainment, professional communications, telematics equipment, refrigerators, televisions etc. from the 24Vdc mobile electrical systems found on diesel engined vehicles and vessels.


There are 14 products in the range from 3A to 50A in isolated or common earth configurations. They have been optimised for high volume 24Vdc to 12Vdc applications such as on heavy goods vehicles, coaches, buses, forestry and agricultural vehicles, as well as commercial and leisure marine vehicles.


These units are IP53, so there are no ventilation holes to permit stray objects, dust or water droplets to enter the case, there are no external fuses to be tampered with. Fuses will only blow if there is a fault so there is no need to make them accessible.


Many PowerVerters and DD Series products can be configured with alternative output voltages etc. for specialist applications. Please call our sales team to discuss your requirements.

PV6s new


All the units consume an off load current of less than 15mA, which is probably less than the self discharge current of the vehicle’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 fixing kit for din rail installation is also available. A green LED indicates when there is output from the converter. This gives reassurance to the installation engineer and speeds fault finding.



Part Number Cont/Int Power Nominal Voltage Dimensions Weight
PV3s 3A/6A non-isolated 24Vdc input, 12Vdc output  67x87x50mm 200g
PV6s 6A/10A non-isolated 24Vdc input, 12Vdc output 89x87x50mm 250g
PV12s 12A/18A non-isolated 24Vdc input, 12Vdc output 127x87x50mm 405g
PV18s 18A/22A non-isolated 24Vdc input, 12Vdc output 167x87x50mm 605g
PV24s 24A/30A non-isolated 24Vdc input, 12Vdc output 167x87x50mm 620g
*PV50s 50A/60A non-isolated 24Vdc input, 12Vdc output 283x125x74mm 1820
PV3i 3A/6A isolated 24Vdc input, 12Vdc output 89x87x50mm 280g
PV6i 6A/10A isolated 24Vdc input, 12Vdc output 127x87x50mm 505g
PV12i 12A/18A isolated 24Vdc input, 12Vdc output 167x87x50mm 590g
PV18i 18A/22A isolated 24Vdc input, 12Vdc output 217x87x50mm 775g
PV24i 24A isolated 24Vdc input, 12Vdc output 217x87x50mm 785g
Other input and output voltage configurations are available as special orders, please ask our sales team.
 For Railway Approved Versions , please see PowerVerter Railway Converters


Input voltage range 17-32Vdc
Output voltage 13.6Vdc +15% -20% at extremes of temperature, load, input tolerance, etc.
Intermittent output power
As stated, taken for a maximum of 2 minutes followed by 8 minutes rest.
Transient voltage protection Meets ISO7637-2 International standard for 24Vdc commercial vehicles
Electrostatic voltage protection Meets ISO10605, ISO14892, >8kV contact, 15kV discharge
Output noise <50mV pk-pk at continuous load. Meets CISPR25
Off load current (quiescent current) <15mA
Power conversion efficiency Typically: 90% for non-isolated units, 85% for isolated units, *95%
Isolation >400Vrms between input, output and case, on isolated products only
Operating temperature -25ºC to +30ºC to meet this specification table
+30ºC to +80ºC de rate linearly to 0A
Storage temperature -25ºC to +100ºC
Operating humidity 95% max., non-condensing
Casework Anodised aluminium, glass filled polycarbonate, dust water and impact resistance to IP533
Connections Four 6.3mm push-on flat blade connectors, *5 way Phoenix connector including enable on/off terminal and mating half
Output indicator Green LED adjacent to output terminals
Mounting method ‘Click ‘n’ fit mounting clip, fitted separately using three hole fixture, *4 hole cradle
Safe area protection: Over current Limited by current sensing circuit
Over heat Limited by temperature sensing circuit
Transients Protected by filters and rugged component selection
Catastrophic failure Protected by internal input and output fuses
Approvals 2014/30/EU The general EMC directive
Regulation 10 The automotive directive
93/68/EEC The CE marking directive
Designed to EN50498, ISO 7637-2, ISO 11452-1, ISO 14982, EN12895, EN60945, EN55022, FCC15B
Markings CE and E (automotive) marked


Alfatronix Part Number NSN Nato Part Number
PV3S 6130-99-213-1361
PV6S 6130-99-799-8754
PV12S 6130-99-371-1198
PV18S 6130-99-307-5196
PV24S 6130-99-891-0687
PV3I 6130-99-968-5504
PV6I 6130-99-441-4595
PV12I 6130-99-771-1553
PV18I 6130-99-958-2948
PV24I 6130-99-867-8718