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Description
Mastervolt Mass Combi Pro Inverter / Charger (12V / 3000W / 150A)The Mastervolt Mass Combi Pro combines a powerful 3 step battery charger along with a heavy duty true sine wave power inverter to provide AC output to operate household items. The unit can be connected up to shore power or a generator for charging and the AC output will automatically switch between mains and inverter mode. It has two separate AC outputs, allowing critical equipment to be put on a different circuit to other appliances to protect them
The Mastervolt Mass Combi Pro combines a powerful 3 step battery charger along with a heavy duty true sine wave power inverter to provide AC output to operate household items. The unit can be connected up to shore power or a generator for charging and the AC output will automatically switch between mains and inverter mode. It has two separate AC outputs, allowing critical equipment to be put on a different circuit to other appliances to protect them from heavy loads. The inverter/charger is built to be reliable and user friendly, and is equipped with MasterBus Combi integration for easy operation along with the rest of your Mastervolt system. The Mass Combi Pro features the Power Assist function, which prevents main fuses or breakers being tripped in the event of a weak power supply. It also eliminates power failures and dips to maintain reliable performance. The unit is equally capable at handling heavy loads and more sensitive loads, and with a true sine wave output will not cause harm or damage to your appliances. The high frequency technology used eliminates noise typically associated with power inverters, such as buzzing or humming. This model can be used in a 3 phase system, or you can combine up to 10 units in parallel for higher power outputs. Specifications sine wave inverter Nominal DC voltage: 12 V (9.5-16 V) Output voltage: 180-260 V, adjustable Output frequency: 50/60 Hz (� 0.005 %), configurable Output waveform: true sine Continuous power at 40 C / 104 F, cos phi 1: 3000 W Max. peak load: 6000 W Max. efficiency: �� 90 % Max. ripple on DC (battery at full load): 5 % No-load power consumption on DC (ON/inverter OFF/OFF): 26 W / 4 W / 0 W Energy saving mode consumption: 7 W Parallel configuration: yes, up to 10 units (for larger systems, an external transfer system is required) 3-Phase configuration: yes, up to 3x3 Synchronise with mains/generator: yes Specifications battery charger Input voltage range: 184-275 V Max. input current: 12 A Max. charge current at 40 C / 104 F: 150 A at 14.25 V, adjustable Battery temperature sensor: yes, included Battery voltage sense: through MasterShunt, otherwise automatic compensation Specifications transfer system AC input (generator): 50 A (switched) AC input: 30 A (switched) AC output 1: 67 A AC output 2: 50 A (switched) AC input fuse: no Transfer speed: seamless ( 1 ms) Transfer voltage range: 184-275 V, adjustable Transfer frequency range: 35-68 Hz, adjustable General specifications Galvanisedanic isolation: yes Display/read-out: LED display Dimensions, hxwxd: 472 x 318 x 178mm (18.6 x 12.5 x 7.0 inch) Weight: 15.3 kg (3.7 lb) Compliance: CE, E-mark, ABYC Technical specifications Charge characteristic: IUoUo, automatic / 3-step+ for Gel/AGM/MLI/ flooded/spiral/traction Recommended battery capacity: ~ 300-900 Ah (based on gel batteries, may differ for other types) Ground relay: yes, configurable Temperature range (ambient temp.): -25 C to 60 C, derating > 40 C (-13 F to 140 F) Cooling: vario fan Protection degree: IP23 (vertical mounting) Safety class: IEC protection class I Humidity protection: conformal coating, max. 95 % relative humidity, non condensing Protections: over temperature, overload, short circuit, high/low battery voltage Power Assist: yes MasterBus compatible: yesShipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.6 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 3
Came damaged
Format: Paperback, Format: Paperback
Im still reading it and its not bad so far but im disappointed that it came in the mail so damaged. The cover is peeling off and its making holding the book hard because i dont want to rip the whole cover off.
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Reviewed in the United States on January 13, 2026
★★★★★ 5
A must read for public executives
Format: Paperback
Concise, focused, and full of real-world point and counterpoints, I found this to be more of an essential piece of oratory combat equipment than a book. As a non-lawyer working in public service, this book provides excellent points on interpretation, form versus substance, and the importance of observation and evidence – all skills needed to protect the public interest. As someone who monitors contracts in the public sector, many of my peers could benefit from this book and better design contracts to the advantage of their public entity. Incidentally, I was also involved in a heated discussion about data interpretation the same week I was reading this book, and was able to calmly defend and dominate the discussion until my opponent acquiesced. More important than dominating your opponent is the theme throughout this book that one’s argument must be genuine, and the logic tight. Additionally, as Prof. Trachtman reminds readers that these skills, like a weapon, should only be used for good. A great read!
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Reviewed in the United States on January 13, 2014
★★★★★ 5
What our kids need to hear
Format: Hardcover
This book says exactly what our kids need to hear in these confusing times. There are so many things that our children hear and see these days that it can be overwhelming and confusing. This book and the sweet illustrations make teaching our kids how lucky we are to live in the US so very easy and important. This is something we need to make sure our children appreciate and they will grow up proud to protect our freedoms afforded to us by so many. Love this book!
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Reviewed in the United States on July 26, 2022
★★★★★ 5
Simply Wonderful
Format: Hardcover
I Love America is a wonderful book to help children (along with the rest of us!) recognize and appreciate the blessings bestowed upon us by God, including our freedoms in all their forms, our remarkable veterans, and those that work so hard to make our nation what it is.
The fun rhyming and adorable illustrations kept our boys glued to it the whole time.
Highly, highly recommended.
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Reviewed in the United States on August 31, 2022
★★★★★ 5
The Greatest
Format: Hardcover
As a teacher and administrator in the public schools for 50 years, I can honestly say Little Liberty and his Mama tell the story of freedom that will make the connections for our greatest treasure, our children. The love and confidence of Little Liberty and his Mama exemplifies our core American values.....a must read for our children and grandchildren.
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Reviewed in the United States on August 3, 2022