The Mass Combi inverter and battery charger in one is increasingly playing a leading role in carefully designed electrical systems. Mastervolt has integrated the most advanced technology into a compact package allowing owners to get the most value for their money. This offers you high-quality basic support for smaller systems without requiring a great deal of space. You will not have to worry anymore about the quality of shore power in any port - things will always work with the Mass Combi!

The most vital functions in your electrical system now come within reach: battery charging supplying 120V power switching and the use of extended AC loads to be utilized on board even when limited shore power is available. Power can be drawn from a shore connection generator or charged batteries. Mastervolt's three-step Plus charging method guarantees more battery power and a longer life span. Batteries are always fully charged and fast even when a generator is used. And the clean or 120/60Hz power supply is perfectly reliable.

Equipment including domestic appliances can now be safely connected to the on board network. Air-conditioning systems dishwashers and microwave ovens all function perfectly. Even if you are using the washing machine or other power hungry appliances the generator or batteries step in to temporarily bridge the gap. All this because of the tailor-made technology: the power to be independent!

• Product Specifications | Download

	General specifications		General specifications
	Charge current second output	5 A
	Efficiency	90 %
	Display/read-out	LED display
	Dimensions hxwxd	496 x 318 x 156 mm 19.5 x 12.5 x 6.1 inch
	Weight	11 kg 24.3 lb
	Approvals	CE ABYC A-31
	Technical specifications		Technical specifications
	Charge characteristic	IUoUo automatic 3-step+ for gel/AGM/wet/Lithium Ion
	Max. current first output	50 A
	Max. current shortbreak / inverter output	35 A
	Transfer time	10 ms
	Ground relay	yes adjustable by DIP switch
	Temperature range (ambient temp.)	-25 C to 80 C derating > 25 C -13 to 176 F
	Cooling	maintenance free vario fans
	Sound level	48 dBA at 1 mtr
	Protection degree	IP23
	Protections	over temperature over load short circuit high battery low battery
	MasterBus compatible	yes in combination with a MasterBus Combi Interface
	Specifications sine wave inverter		Specifications sine wave inverter
	Nom. DC voltage	12 V (10-15 V)
	Output waveform	true sine
	Cont. power at 25 C cos phi 1	2500 W 20.8 A
	Surge capability	5000 W 38 A
	Parallel configuration	yes
	Parallel with grid/generator	yes
	Output voltage ( 5%)	120 V 60 Hz0.05%
	DC consumption at 120 V	< 9 W
	Search mode consumption	0.5 W
	Specifications battery charger		Specifications battery charger
	Nom. input voltage	120 V 45-65 Hz
	Max. charge current (adjustable)	100 A at 14.25 V
	Primary AC consumption (full charge)	1700 W 14.5 A
	Charge voltage 25 C (Absorption/Float)	14.25/13.25 V
	Temperature sensor battery	delivered as standard with 6 mtr cable and telejack plug