Mastervolt Magic 12/12-20 DC Converter

The Magic 12/12-20 DC Converter is the ultimate power solution for marine and boating enthusiasts, delivering exceptional reliability and performance even in the most demanding sea conditions. Perfect for professional mariners, recreational boaters, and anyone who relies on a stable power supply aboard their vessel, this DC-DC converter ensures your onboard systems run smoothly around the clock.

Built for the Demands of Marine Environments

The Mac and Magic DC-DC converters are engineered to withstand the harshest marine conditions, providing uninterrupted power for critical onboard systems. With proven Mastervolt technology and an impressive MTBF of 280,000 hours at full capacity, these converters deliver reliable power 24/7, ensuring your vessel operates smoothly in any situation.

Enhanced Performance and Easy Integration

Mastervolt’s DC-DC converters offer exceptional reliability and longevity, refined over 20 years in the marine industry. Despite technological advancements, the physical dimensions and connections of our converters remain consistent, making replacement straightforward with minimal downtime. This ease of integration is perfect for maintaining your boat’s power system efficiently and effectively.

Eco-Friendly and Sustainable Solutions

Mastervolt's Green by Heart program underscores our commitment to environmentally responsible marine solutions. Key benefits of the Mac & Magic DC-DC converters include:

• Exceptional input current efficiency (cos phi > 0.98)
• Faster battery charging, even with limited input current
• High-quality, long-lasting components
• Lightweight and space-saving design
• Reduced installation materials

Seamless MasterBus Integration

Optimize your marine power management with the MasterBus Serial Interface, compatible with our DC-DC converters. A single connection cable facilitates quick and easy installation, while centralized monitoring and configuration via the MasterView panel streamline your boat’s power operations.

Advanced Programmability for Marine Applications

Control your Mac or Magic DC-DC converter remotely using your laptop or PC. Customize settings and monitor performance effortlessly with the integrated communication port and MasterAdjust software, ensuring your marine power system meets your specific needs.

Energy-Efficient Dimmer Function for Marine Lighting

The Magic converters feature an energy-saving dimmer function that optimizes power supply for your boat’s lighting. Unlike standard dimmers, our technology minimizes energy loss and heat generation, supporting up to 580 watts safely. Multiple converters can be used for powering various marine lamps efficiently.

Parallel Operation for Enhanced Power Capacity

For vessels with numerous or high-power-consuming devices, parallel operation of multiple DC-DC converters provides increased capacity options of 40, 60 Amps or more. Advanced high-frequency technology and modern microprocessors ensure minimal power loss during voltage switching, maintaining efficiency and reliability on board.

Key Features and Benefits

• Reliable and stable DC power supply tailored for marine use
• Compatible with both 12V and 24V battery systems
• Scalable power capacity through parallel switching
• Integrated battery charger and dimmer functionality
• Adjustable output voltage for diverse onboard needs
• Voltage stabilization prolongs the lifespan of marine lighting and equipment
• Durable, corrosion-proof aluminum casing ideal for marine environments
• Shock-proof design ensures resilience against marine vibrations
• Temperature-controlled fan maintains optimal cooling
• Low heat generation for versatile installation around the vessel
• Fully MasterBus compatible for streamlined marine power management

Technical Specifications

Specification	Details
Nominal Output Voltage	13.6V
Adjustable Output Voltage	10-15V (via MasterAdjust)
Adjustable Output Voltage Dimmer	4-13V (via MasterAdjust)
Voltage Stabilization	±2% under varying temperature, load, and input conditions
Output Voltage Ripple	Max 1% peak-to-peak
Max Output Power	300W
Nominal Output Power	300W
Max Output Current	20A
Output Charge Current	16A (3-step mode)
Nominal Input Voltage	12V
Input Voltage Range	11-16V
Input Voltage Range (3-step Charge Mode)	12-16V
Lower Input Set Point	10V (adjustable via MasterAdjust)
Delay Lower Input Set Point	30 sec
Galvanic Isolation	Yes
Voltage Limited	Yes
Efficiency	≥90% at nominal input voltage, full load; peak 92%
Dimmer Function	Yes (controlled via external momentary switch)
Alarm Contact	Yes
Dimensions (HxWxD)	227 x 154 x 81 mm / 8.9" x 6.1" x 3.2"
Weight	1.8kg / 4.0lb
Approvals	CE
3-Step Charge Option	Yes (DIP switch settings)
DC Consumption	<115 mA
Connections	Screw terminals (max wire size 16 mm² / AWG5)
Operating Temperature Range	-25°C to 80°C (-13°F to 176°F), derating above 40°C
Sound Level	<48 dBA at 1 meter
Protection Degree	IP21
Protections	Over load & over temperature
Cooling	Maintenance-free vario fans
MasterBus Compatible	Yes, with MasterBus Serial Interface

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit P65Warnings.ca.gov.

Owner's Manual (PDF)

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.