Electrical - DC to DC Converters
Marine DC to DC converters are designed to provide stable, efficient voltage conversion and dependable power management for your vessel's electrical system. Engineered for demanding freshwater and saltwater environments, these marine-grade converters safely step up, step down, or regulate DC voltage to ensure onboard electronics and accessories receive the correct power supply. From isolated and non-isolated converters to DC-to-DC battery chargers and voltage regulators, these solutions support multiple battery banks, alternator charging systems, lithium battery installations, navigation electronics, communication equipment, lighting, and other onboard devices. Built with advanced protection against overload, overheating, short circuits, and voltage fluctuations, marine DC to DC converters help improve battery charging efficiency while protecting sensitive electronics. Whether you're upgrading your boat's electrical system or adding new equipment, the right converter delivers reliable performance and long-term efficiency. Featuring premium products from trusted marine brands such as Victron Energy, Mastervolt, and Newmar, our Electrical – DC to DC Converters collection offers the quality and reliability serious boaters expect. Browse our selection today and let our knowledgeable team help you choose the ideal solution for your vessel.
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- Featured
- Most relevant
- Best selling
- Alphabetically, A-Z
- Alphabetically, Z-A
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Vendor:Victron Energy
Victron Orion-TR Smart 12/24-15 15A (360W) Non-Isolated DC-DC or Power Supply [ORI122436140]
- £161.39
£189.87- £161.39
- Unit price
- / per
Orion-TR Smart 12/24-15 15A (360W) Non-Isolated DC-DC or Power SupplyThe Orion-Tr Smart DC-DC charger is a professional DC to DC adaptive 3-stage charger with built-in Bluetooth.For use in dual battery systems in vehicles or on boats where the alternator and the start battery are...- £161.39
£189.87- £161.39
- Unit price
- / per
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Vendor:Victron Energy
Victron Orion-TR DC-DC Converter - 12 VDC to 12 VDC - 30AMP Isolated [ORI121240110]
- £151.18
£177.86- £151.18
- Unit price
- / per
Orion-TR 12/12-30A (360W) Isolated DC-DC ConverterRemote On/Off TerminalThe remote on/off terminal eliminates the need for a high current switch in the input wiring. The remote on/off can be operated with a low power switch or for example the engine run/stop switch. All Models Are Short...- £151.18
£177.86- £151.18
- Unit price
- / per
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Vendor:Victron Energy
Victron Orion IP67 DC-DC Converter 12/24-50A - 1200W [ORI122421226]
- £266.64
£313.69- £266.64
- Unit price
- / per
Orion IP67 DC-DC Converter 12/24-50A - 1200WCompletely encapsulated: waterproof, shockproof, and ignition-protected. Water, oil, or dirt will not damage the Orion IP67 DC-DC Converter. The casing is made of cast aluminum and the electronics are molded in resin.Completely encapsulated: waterproof, shockproof, and ignition protected Water,...- £266.64
£313.69- £266.64
- Unit price
- / per
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Vendor:Victron Energy
Victron Orion IP67 DC-DC Converter - 24/12 VDC - 20AMP - 240W [ORI241220260]
- £43.38
£51.03- £43.38
- Unit price
- / per
Orion IP67 DC-DC Converter - 24/12 VDC - 20AMP - 240WFeatures: Completely encapsulated: waterproof, shockproof and ignition protected Water, oil or dirt will not damage the Orion IP67 DC-DC Converter. The casing is made of cast aluminium and the electronics are moulded in resin. ...- £43.38
£51.03- £43.38
- Unit price
- / per
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Vendor:Victron Energy
Victron Energy Orion-TR Smart 24/12-30 30A (360W) Isolated DC-DC or Power Supply [ORI241236120]
- £183.07
£215.38- £183.07
- Unit price
- / per
Orion-TR Smart 24/12-30A (360W) Isolated DC-DC Charger or Power SupplyThe Orion-Tr Smart isolated DC-DC charger serves as a DC-DC battery charger or a power supply (also designed for use as a constant voltage source), offering a wide input and output voltage range. This is...- £183.07
£215.38- £183.07
- Unit price
- / per
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Vendor:Victron Energy
Victron Orion-TR Smart 24/12-30 30A (360W) Non-Isolated DC-DC or Power Supply [ORI241236140]
- £161.39
£189.87- £161.39
- Unit price
- / per
Orion-TR Smart 24/12-30 30A (360W) Non-Isolated DC-DC or Power SupplyThe Orion-Tr Smart DC-DC charger is a professional DC to DC adaptive 3-stage charger with built-in Bluetooth.For use in dual battery systems in vehicles or on boats where the alternator and the start battery are...- £161.39
£189.87- £161.39
- Unit price
- / per
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Vendor:Victron Energy
Victron Orion-TR DC-DC Converter - 24 VDC to 12 VDC - 20AMP Isolated [ORI241224110]
- £85.48
£100.56- £85.48
- Unit price
- / per
Orion-TR 24/12-20A (240W) Isolated DC-DC ConverterIsolated Model - separate in and out (-) leads Remote On/Off TerminalThe remote on/off terminal eliminates the need for a high current switch in the input wiring. The remote on/off can be operated with a low power switch or for...- £85.48
£100.56- £85.48
- Unit price
- / per
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Vendor:Victron Energy
Victron Orion IP67 DC-DC Converter - 24 VDC to 12 VDC - 100AMP [ORI241221226]
- £221.99
£261.16- £221.99
- Unit price
- / per
Orion IP67 DC-DC Converter - 24 VDC to 12 VDC - 100AMP Features: Completely encapsulated: waterproof, shockproof and ignition protected Water, oil or dirt will not damage the Orion IP67 DC-DC Converter. The casing is made of cast aluminium and the electronics are moulded in...- £221.99
£261.16- £221.99
- Unit price
- / per
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Vendor:Analytic Systems
Analytic Systems Waterproof IP66 DC Converter 10A, 24V Out, 30-80V In, Ruggedized [VCH10W-24]
- £321.19
£339.96- £321.19
- Unit price
- / per
Waterproof IP66 DC Converter 10A, 24V Out, 30-80V In, RuggedizedThe VCH10 Step Down series of Voltage Converters supply up to 10 amps of output current at 12, 24, 36 or 48 volts from any higher voltage between 20 and 80 volts DC in an...- £321.19
£339.96- £321.19
- Unit price
- / per
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Vendor:Analytic Systems
Analytic Systems Waterproof IP66 DC Converter 10A, 12V Out 20-80V In, Ruggedized [VCH10W-12]
- £321.19
£339.96- £321.19
- Unit price
- / per
Waterproof IP66 DC Converter 10A, 12V Out 20-80V In, RuggedizedThe VCH10 Step Down series of Voltage Converters supply up to 10 amps of output current at 12, 24, 36 or 48 volts from any higher voltage between 20 and 80 volts DC in an...- £321.19
£339.96- £321.19
- Unit price
- / per


![Victron Orion IP67 DC-DC Converter 12/24-50A - 1200W [ORI122421226]](http://www.dbmarinesupplies.com/cdn/shop/files/89759XL_533x.jpg?v=1682785703)