The Mastervolt Mass Sine 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. It is compatible with the Mastervolt MasterBus system, allowing it to be connected and configured centrally on the EasyView 5 alongside other items in your electrical system. It can also be operated by the remote panel, or on the device itself.

The power inverter can give you consistent, 24/7 use, with an MTBF (Mean Time Between Failures) of 180,000 hours when at full capacity without stopping. The Mass Sine range are extremely efficient and also feature an automatic economy mode, allowing digital clocks to carry on working whilst not putting excess strain on the battery. The high frequency technology used eliminates noise typically associated with power inverters, such as buzzing or humming.

General specifications

Output voltage (± 5 %): 230 V - 50 Hz (± 0.01 Hz)

Output waveform: true sine

Nominal battery voltage: 24 V

Recommended battery capacity: > 400 Ah

Continuous power at 40 °C / 104 °F, cos phi 1: 4000 W

P30 power at 40 °C, cos phi 1: 5000 W

Peak load: 9000 W

AC connection: internal

Galvanisedanic isolation: yes

Efficiency: 92 %

Display/read-out: LED display

Dimensions, hxwxd: 470 x 315 x 254mm (18.5 x 12.4 x 10.0 inch)

Weight: 19 kg (41.9 lb)

Compliance: CE, E-mark, ABYC A-31

Technical specifications

Technology: HF switch mode

Low battery voltage, switches off at: 19 V, ± 0.5 V

Low battery voltage, switches on at: 22 V, ± 0.5 V

High battery voltage, switches off at: 32 V, ± 0.5 V

High battery voltage, switches on at: 30 V, ± 0.5 V

Max. ripple on DC (battery): 5% RMS

Input current (nominal load): 230 A

No-load power consumption (ON mode): 250 mA - 6 W

No-load power consumption (energy saving mode): 50 mA - 1.2 W

Minimal DC fuse (slow blow): 1x 250 A or 2x 125 A

Minimal cable size: 2x 70mm²

Harmonic distortion typical: < 5%

Cos phi: all power factors allowed

Transfer system: the Masterswitch and Systemswitch can be connected to all sine wave inverters

Temperature range (ambient temp.): -25 °C to 80 °C, derating > 40 °C (-13 °F to 176 °F)

Cooling: natural/forced

Protection degree: IP23

Protections: over temperature, over load, short circuit, high/low battery voltage

MasterBus compatible: yes, using a MasterBus Inverter Interface or AC power analyser