Designed with the customer in mind and using the latest technology, the 
CombiMaster range is all about user-friendliness and reliability. But don’t let 
that friendly appearance misguide you: the powerful CombiMaster range drives 
even the heaviest and most sensitive loads with ease!
With the CombiMaster, power dips and failures belong to the past. The 
automatic AC transfer system switches between generator or mains and inverter 
output, ensuring a constant power supply. Its Power Assist function 
prevents tripping of the mains fuse in case you’re connected to a weak land line 
or small generator.
The CombiMaster range delivers unmatched performance and value for money. As 
you would expect from Mastervolt, the CombiMaster is completed with MasterBus, 
CZone and NMEA 2000 compatible communication, allowing for a broad range of 
monitoring and system integration options.
  
    |   | 
  
  
    | Specifications sine 
    wave inverter  | 
  
  
    | 
    Nominal DC voltage | 
    24 V 
    (20.4–32 V)  | 
  
  
    | 
    Output voltage | 
    230 V
     | 
  
  
    | 
    Output frequency | 
    50/60 Hz 
    (configurable)  | 
  
  
    | 
    Output waveform | 
    true sine
     | 
  
  
    | 
    Continuous power at 40 °C / 104 °F, cos phi 1 | 
    3000 VA / 
    2600 W  | 
  
  
    | 
    Peak power (30 sec) | 
    4500 VA / 
    3900 W  | 
  
  
    | 
    Surge power (5 sec) | 
    6000 VA / 
    5200 W  | 
  
  
    | 
    Max. efficiency | 
    93 %
     | 
  
  
    | 
    Battery no-load power consumption | 
    30 W (on 
    mode) / < 1 mA (off mode)  | 
  
  
    | 
    Energy saving mode consumption | 
    10 W
     | 
  
  
    | 
    Synchronise with mains | 
    yes
     | 
  
  
    |   | 
  
  
    | Specifications 
    battery charger | 
  
  
    | 
    Input voltage range | 
    170-280 V
     | 
  
  
    | 
    Max. input current | 
    13 A 
    (adjustable)  | 
  
  
    | 
    Max. charge current at 40 °C / 104 °F | 
    60 A at 
    28.5 V (configurable)  | 
  
  
    | 
    Battery temperature sensor | 
    yes, 
    included  | 
  
  
    | 
    Battery voltage sense | 
    automatic 
    compensation  | 
  
  
    |   | 
  
  
    | Specifications 
    transfer system | 
  
  
    | 
    AC input | 
    25 A 
    (switched)  | 
  
  
    | 
    AC output | 
    38 A
     | 
  
  
    | 
    AC input fuse | 
    yes
     | 
  
  
    | 
    Transfer speed | 
    10 ms
     | 
  
  
    | 
    Transfer voltage range | 
    wide: 
    90–280 V / narrow: 170–280 V  | 
  
  
    | 
    Transfer frequency range | 
    40-65 Hz
     | 
  
  
    |   | 
  
  
    | General 
    specifications | 
  
  
    | 
    Display/read-out | 
    LED 
    display  | 
  
  
    | 
    Dimensions, hxwxd | 
    448 x 284 
    x 155 mm 
    17.6 x 11.2 x 6.1 inch  | 
  
  
    | 
    Weight | 
    9.3 kg 
    20.5 lb  | 
  
  
    | 
    Approvals | 
    CE, 
    E-mark, AZ/NZS  | 
  
  
    |   | 
  
  
    | Technical 
    specifications | 
  
  
    | 
    Charge characteristic | 
    IUoUo, 
    automatic / 3-step+ for flooded, Gel/AGM and MLI, configurable  | 
  
  
    | 
    Recommended battery capacity | 
    180-500 
    Ah (based on gel batteries, may differ for other types)  | 
  
  
    | 
    Ground relay | 
    yes, 
    configurable by means of mechanical jumper  | 
  
  
    | 
    Temperature range (ambient temp.) | 
    -25 °C to 
    60 °C, derating > 40 °C 
    -13 °F to 140 °F  | 
  
  
    | 
    Cooling | 
    vario fan
     | 
  
  
    | 
    Protection degree | 
    IP23 
    (vertical mounting)  | 
  
  
    | 
    Safety class | 
    IEC 
    protection class I  | 
  
  
    | 
    Humidity protection | 
    conformal 
    coating, max. 95 % relative humidity, non condensing  | 
  
  
    | 
    Protections | 
    
    over-temperature, overload, short circuit, high/low battery voltage 
     | 
  
  
    | 
    Power Assist | 
    yes, 
    supports AC input with power from the battery  | 
  
  
    | 
    Power Sharing | 
    yes, 
    allows you to select AC Input fuse setting  | 
  
  
    | 
    MasterBus compatible | 
    yes
     | 
  
  
    | 
    CZone / NMEA 2000 compatible | 
    yes
     |