Mastervolt

Mastervolt Magic 24/12-20

£469.25
Tax included. Shipping calculated at checkout.
81300100
Galvanically isolated 24 V to 12 V DC-DC converter and 3-step charger rated 20 A / 300 W, with adjustable output, dimmer function and MasterBus capability.

Collection or delivery in 1-2 weeks

Pickup available at Mercury Yacht Harbour

Usually ready in 2-4 days

Description

The Magic 24/12-20 is a galvanically isolated DC-DC converter and 3-step battery charger that delivers a stable, regulated 12 V output from a 24 V supply at up to 20 A (300 W). It can regulate the voltage both up and down for optimal stabilisation, even when battery voltage fluctuates under heavy loads, while galvanic isolation between input and output prevents interference to sensitive communication equipment.

Advanced high-frequency technology with modern microprocessors keeps power losses low, and an MTBF of 280,000 hours suits demanding professional, semi-professional and recreational use. Output voltage is adjustable and programmable via the PC-Link and MasterAdjust software, and an energy-saving dimmer function regulates lighting without excessive heat. Multiple units can be paralleled for over 100 A.

Connected to a 12 V service battery, it doubles as an advanced 3-step charger for Gel, AGM, flooded or Lithium Ion batteries.

PRODUCT DETAILS

  • Galvanically isolated 24 V to 12 V conversion, 20 A / 300 W
  • Doubles as an advanced 3-step battery charger (16 A)
  • Adjustable and programmable output voltage via MasterAdjust
  • Energy-saving dimmer function for lighting
  • Isolation suppresses interference to sensitive equipment
  • Parallel switchable for outputs over 100 A
  • Maintenance-free vario fan cooling; MTBF 280,000 hours
  • MasterBus compatible via a MasterBus Serial Interface

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General

Nominal input voltage24 V
Input voltage range19-32 V
Input voltage range (3-step charge mode)26-32 V
Nominal output voltage (adjustable with MasterAdjust)13.6 V
Output voltage10-15 V
Output voltage dimmer (adjustable with MasterAdjust)4-13 V
Max. output current20 A
Output charge current (3-step mode)16 A
Max. output power300 W
Nominal output power300 W
Output voltage stabilisation2 % at extremes of temperatures, load and input
Output voltage ripple (peak-peak)max. 1 %
Galvanic isolationYes
Efficiency> 90 % (at nom. input voltage, full load); peak 92 %
Parallel configurationYes
Dimmer functionYes, by external momentary switch via fast-on connection (activated by DIP switch)
Alarm contactNo

Technical

Charge characteristic3-step
Battery typesflooded, Gel, AGM, spiral, Lithium Ion, traction, user defined
DC consumption< 115 mA
Connectionsscrew terminals (max. wire size 16 mm2 / AWG5)
Temperature range (ambient)-25 °C to 60 °C; derating > 40 °C
Coolingmaintenance-free vario fans
Protection degreeIP21
Protectionsagainst overload and over temperature
MasterBus compatibleYes, in combination with a MasterBus Serial Interface

Physical

Dimensions (h x w x d)227 x 154 x 81 mm
Weight1.8 kg
ComplianceCE

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What is galvanic isolation and why does it matter?
Galvanic isolation electrically separates the input and output circuits. It prevents earth loops and interference reaching sensitive equipment such as communication and navigation electronics.
Is the Magic a converter or a battery charger?
Both. It provides a stabilised 12 V output as a power supply, and when connected to a 12 V service battery it acts as an advanced 3-step charger.
Can the output voltage be adjusted?
Yes. The nominal output voltage and the dimmer range are adjustable and programmable using the PC-Link and MasterAdjust software.
What does the dimmer function do?
It regulates lighting efficiently without converting energy to heat, so multiple converters can dim multiple lamps with minimal losses.
Can it be connected to MasterBus?
Yes, in combination with a MasterBus Serial Interface, allowing monitoring and configuration within a MasterBus network.