Victron Energy Orion-TR DC-DC Converter 48 volts to 12 volts 30 amps Isolated Blue. The high voltage is needed to prevent the ingress of secondaries from AC while the high power is required for an efficient (low THD) stand-alone power supply. With the new Victron Green Function the user has the option to operate the Orion-TR from the auxiliary battery terminals (sold separately) or the vehicle battery (sold separately) providing a 12V charge to the auxiliary battery. For example the Orion-TR Blue and the Orion-TR Red (for no gen-set). Specifications for Victron Energy Orion-TR DC-DC Converter - 48 VDC to 12 VDC: Manufacturer: Victron Energy Amperage: 30 amps Color: Blue Features of Victron Energy Orion-TR DC-DC Converter - 48 VDC to 12 VDC Remote On-Off: The remote on-off 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 by for example the engine run/stop switch (see manual). Adjustable Output Voltage: can also be used as a battery charger. For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system. All models are short circuit proof and can be paralleled to increase output current An unlimited number of units can be connected in parallel. IP43 Protection: When installed with the screw terminals oriented downwards. Screw Terminals: No special tools needed for installation. Input Fuse: On 12V and 24V input models only. Package Contents: Victron Energy Orion-TR DC-DC Converter - 48 VDC to 12 VDC Victron Energy ORI481240110: Orion-TR DC-DC Converter 48 volts to 12 volts 30 amps Isolated Blue