Experience uninterrupted, high-quality power aboard with the Mastervolt CombiMaster 24/2000-60 (120 V), model 35522000. The most compact and lightweight Combi in its class, it delivers reliable, hum-free operation from your 24 V battery bank and can start even the heaviest and most sensitive loads.

Key features

• True sine wave inverter delivers 2000 W continuous, 3000 W peak, and 4000 W surge for demanding loads. Output is 120 V with configurable 60/50 Hz and a wide input voltage range of 20.4–32 V.
• Efficient, 3-step+ battery charger adapts to flooded, Gel/AGM, and MLI batteries, with 90–140 V AC input, up to 21 A input current, and up to 60 A charge current at 28.5 V (configurable). Includes a battery temperature sensor and automatic voltage compensation.
• Automatic transfer switching seamlessly switches between mains and inverter, with a transfer speed of 10 ms. AC input up to 30 A and output up to 47 A, ensuring continuous power.
• Power Assist prevents tripping of the mains fuse when connected to a weak landline or small generator, providing reliable power in challenging conditions.
• Generator compatibility and smart integration compatible with generators and designed for easy monitoring and system integration via MasterBus, CZone, and NMEA 2000.
• User-friendly installation and safety quick wiring with heavy-duty connections, E-mark certified, IP23 protection, galvanic isolation, and configurable ground relay for reliable operation.
• Built for efficiency and reliability with maximum efficiency around 93%, low no-load power consumption (30 W on, <1 mA off), and energy-saving mode (10 W).
• Compatibility and safety certifications designed for marine use with ABYC A31, UL1236, UL1741, SAEJ1171, and FCC Class B compliance.
• Compact, robust design dimensions: 17.6 in (h) x 11.2 in (w) x 6.1 in (d); weight: 20.5 lb; suitable for vertical mounting and trusted by professionals.
• Battery range and environment recommended battery capacity 120–320 Ah (gel guidance; other chemistries may differ); operating temperature range from -13 °F to 140 °F with a vario cooling fan for optimal performance.

Specifications at a glance

• Inverter nominal DC: 24 V (20.4–32 V); output 120 V; frequency 60/50 Hz configurable; continuous power 2000 W; peak 3000 W; surge 4000 W; efficiency 93%.
• Battery charger input 90–140 V; max input current 21 A; max charge current 60 A (configurable); battery temperature sensor included; automatic voltage sensing.
• Transfer AC input 30 A (switched); AC output 47 A; transfer time 10 ms; wide/narrow transfer voltage range; 40–65 Hz transfer frequency.
• General galvanic isolation; IP23; safety class I; conformal coating; humidity up to 95% non-condensing.
• Dimensions & weight 17.6 x 11.2 x 6.1 inches; 20.5 lb.

Designed with the user in mind and built on the latest Mastervolt technology, the CombiMaster delivers unmatched performance and reliability. It keeps power steady, protects your electrical system, and makes managing battery power simple—whether you’re at sea, on a yacht, or off-grid.