Mastervolt CombiMaster 12/3000 Inverter/Charger 12v Input 120v 3000Watt Output

Power up with confidence using the Mastervolt CombiMaster 12/3000 Inverter/Charger. Designed for 12 V input and 120 V output, this compact, lightweight powerhouse delivers reliable, hum-free performance with longer battery runtime. It can start even the heaviest and most sensitive loads, making it ideal for demanding off-grid or marine applications.

Key advantages

• True sine-wave output ensures safe operation of all electronics and appliances.
• 2600 W continuous power at 40 °C (104 °F) with a 4500 W peak and 6000 W surge, handling demanding devices with ease.
• High efficiency at 93% for economical operation.
• Intelligent 3-step+ battery charger supports flooded, Gel/AGM and MLI batteries for faster, safer charging.
• Automatic switching between mains and inverter mode to ensure a constant power supply.
• Power Assist prevents tripping of mains fuses when connected to a weak land line or small generator.
• Generator compatible for seamless operation with external power sources.
• Integrated communication with MasterBus, CZone and NMEA 2000 for broad monitoring and system integration.
• Easy installation with heavy-duty connections and reliable protection features.
• E-mark certified for compliance and safety in approved markets.

Technical specifications

• Inverter — Nominal DC voltage: 12 V (range 10.2–16 V); Output: 120 V; Output frequency: 60/50 Hz (configurable); True sine wave
• Power — Continuous: 2600 W @ 40 °C / 104 °F; Peak: 4500 W; Surge: 6000 W
• Efficiency — Max 93%;
• Battery charging — Input voltage range: 90–140 V; Max input current: 28 A (adjustable); Max charge current: 160 A at 14.25 V (configurable); Battery temperature sensor included with automatic voltage compensation
• Transfer system — AC input 30 A (switched); AC output 55 A; Transfer speed: 10 ms; Transfer voltage range: wide 70–140 V / narrow 90–140 V; Transfer frequency range: 40–65 Hz
• General — Galvanic isolation: Yes; Display: LED; Dimensions (HxWxD): 17.6 x 11.2 x 6.1 in; Weight: 20.5 lb
• Safety and environments — IP23; Temperature range: -13 °F to 140 °F; Cooling: vario fan; Humidity protection: conformal coating, up to 95% RH non-condensing; Ground relay: configurable; Compliance: ABYC A31, UL1236, UL1741, SAEJ1171, FCC Class B
• Compatibility — Recommended battery capacity 300–800 Ah (based on gel batteries; may differ for other chemistries); Suitable for use with generator power and integrated with MasterBus, CZone and NMEA 2000