Mastervolt Magic 24/12-20 Galvanically Isolated DC-DC Converter & 3-Step Charger – 24V to 12V, 20A, Programmable Output
The Mastervolt Magic 24/12-20 is a rugged DC-DC converter and intelligent battery charger designed to provide highly stable power or fast, safe charging in professional and marine applications. Its galvanic isolation and high-frequency switching make it ideal for sensitive equipment and demanding conditions.
Main Features
- 24 V to 12 V DC-DC converter and 3-step battery charger
- Output current: 20 A (charging current 16 A)
- Galvanically isolated input and output
- Highly efficient:> 90%, up to 92% peak
- Adjustable output voltage: 10–15 V (default 13.6 V)
- Stabilised output voltage with max. 1% ripple
- Supports flooded, AGM, Gel, Lithium Ion & user-defined batteries
- 3-step charge logic with programmable thresholds via MasterAdjust
- Parallel operation for higher total output capacity
- Built-in dimmer function for LED/halogen lighting
- Fan-cooled, compact and durable housing
General Specifications
| Input Voltage Range | 19–32 V |
| Input Range (Charge Mode) | 26–32 V |
| Output Voltage (adjustable) | 10–15 V (default 13.6 V) |
| Max Output Current | 20 A |
| Charging Current (3-step) | 16 A |
| Max Output Power | 300 W |
| Voltage Ripple | <1% |
| Galvanic Isolation | Yes |
| Efficiency | > 90% (peak 92%) |
| Parallel Configuration | Yes |
| Cooling | Maintenance-free vario fan |
Dimmer and Control Features
- Dimmer range: 4–13 V (adjustable)
- Controlled by external momentary switch
- MasterAdjust PC software for advanced configuration
- Compatible with MasterBus via optional Serial Interface
Environmental and Mechanical
| Protection Degree | IP21 |
| Operating Temperature | -25 °C to +60 °C (derating> 40 °C) |
| Dimensions (HxWxD) | 227 x 154 x 81 mm |
| Weight | 1.8 kg |
Safety & Protections
- Overload protection
- Over-temperature protection
- Touch-proof terminals
- CE compliant
Applications
- Voltage regulation for communications equipment
- Power supply for sensitive 12 V lighting systems (halogen/LED)
- Stable 12 V output in 24 V systems
- Standalone 3-step charging for auxiliary batteries
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