The Mastervolt AC Master power inverter produces a pure sine wave AC (Alternating Current) output from a DC (Direct Current) input from your boats battery bank. Because of the pure sine wave output, it is safe and reliable and prevents damage to the equipment it is connected to. The inverter is easy to install and features built in protection against over-temperature, overload, short circuit, high or low battery voltage and reverse polarity.

The power inverter is robustly built and delivers the full output even in demanding conditions. The high frequency technology used eliminates noise typically associated with power inverters, such as buzzing or humming. It also features an automatic power saving mode, meaning a longer run time and less strain on your batteries. The 28221500 model is MasterBus compatible and can be used with remote control M70405080 for easy operation.

General specifications

Output voltage: 200/220/230/240 V - 50/60 Hz (selectable)

Output waveform: true sine

Nominal battery voltage: 24 V

Recommended battery capacity: ? 80 Ah

Continuous power at 25 °C / 77 °F, cos phi 1: 1500 W

Continuous power at 40 °C / 104 °F, cos phi 1: 1500 W

Peak load (1 min.): < 1730 W

Peak load (1 s): < 2650 W

AC connection: with UK plug

Galvanisedanic isolation: yes

Efficiency: 94 %

Display/read-out: LED indication: battery voltage, load level, status

Alarms: potential free alarm contact

Dimensions, hxwxd: 248 x 421 x 83mm (9.8 x 16.6 x 3.3 inch)

Weight: 4.2 kg (9.3 lb)

Compliance: CE, E-mark, RCM

Technical specifications

Technology: high frequency, input & output fully isolated

Low battery voltage, switches off at: 21 V

Low battery voltage, switches on at: 25 V

High battery voltage, switches off at: 33 V

High battery voltage, switches on at: 29 V

Input current (nominal load): 75 A

No-load power consumption (ON mode): < 0.9 A

No-load power consumption (energy saving mode): < 0.05 A

Minimal DC fuse (slow blow): 100 A

Minimal cable size: 25mm²

Harmonic distortion typical: < 5 %

Cos phi: all power factors allowed

Temperature range (ambient temp.): -20 °C to 60 °C, derating power > 40 °C (-4 °F to 140 °F)

Cooling: temperature and load controlled fan

Protection degree: IP21, horizontal wall mounting

Protections: over-temperature, overload, short circuit, high/low voltage, reverse polarity (fuse)

MasterBus compatible: yes, using a MasterBus AC Master Interface