WMJ Marine

Anchor & Docking
Boating Accessories
Cabin/ Galley/ Deck
Electrical Supply
Engine Parts
Fish Finder
Fishing & WaterSport
GPS & Chartplotter
Marine Radar
Navigation Tool
Outdoor Gears
Plumbing & Pump
Steering & Control
Trolling Motor
Factory Refurbished
Rebate of Month
WMJ Marine Blog

Shopping Cart
How to Order
Contact Us
FAQ & Return
Privacy Policy
Company Info
Site Map
Send me more info
Product Tutorials
Manufacturer Links
Link to Us
Government Order

Sign Up for Newsletter

WMJ Marine
How to Order Shopping CartContact Us Shipping Info International Order
Home > Electrical Supply > Inverter Charger > Inverter Charger ( 230V AC to 24V DC) >
Mastervolt Mass Combi Ultra 24V/3500W - 100A - 230V, 38023500

Mastervolt Mass Combi Ultra 24V/3500W - 100A - 230V, 38023500

Availability: Usually ships the next business day

Brand New with Factory Warranty

Mastervolt Mass Combi Ultra 24V/3500W - 100A - 230V, 38023500
38023500List Price: $US 4,478.00Our Price: $US 3,949.00

Mass Combi Ultra 24V/3500W - 100A - 230V

The Mass Combi Ultra series comprises several models, varying from 3000 W to 3500 W. For higher capacities up to 35 kW the Combi Ultra can be used in parallel or 3-phase configurations. An efficient and integrated solar charge regulator helps make the most of your solar panels.

The Mass Combi Ultra is equipped with the latest technologies. The new inverter technology ensures a uniquely low stand-by use, while an ultra-fast Digital Signal Processor guarantees seamless switching between all available energy sources. Power Assist prevents power dips and failures, even with a weak electricity connection or small generator. Moreover, all Mass Combi Ultra models are equipped with MasterBus.

Higher yield from solar energy

At Mastervolt we used our knowledge gained in the grid connected solar sector to make a super-efficient built-in MPPT solar charge regulator. Compared to most solar charge regulators on the market, the MPPT offers up to 30 % more yield from solar panels. The solar panels power hidden consumers and keep your batteries in optimal condition.

Pro Models

For professional applications. Mastervolt offers a Pro model, featuring all Ultra functions, but without the solar input and secondary battery charger.

Quiet operation

The Mass Combi Ultra and Mass Combi Pro can provide up to 50 % of the charging current or inverter capacity without fan cooling. This is perfect for night-time operation; if little power is consumed, the fan stops turning and goes silent. When maximum capacity is required, or the ambient temperature is very high, the Active Optima Cooling concept regulates the fan speed in a linear way, ensuring that it never spins too fast or makes any unnecessary ticking noises.

Parallel and 3-phase operation

The Mass Combi Ultra functionality goes beyond stand-alone operation, the design also allows parallel and 3-phase configurations for larger applications up to 35 kW. For larger systems, an external transfer system is required.

Dual AC inputs and outputs

The Mass Combi Ultra and Mass Combi Pro have inputs for generator or mains supply, each optimized for the power source. A robust intelligent transfer system switches seamlessly between AC power, generator and inverter, and ensures a constant power supply. Flickering lights or failure of electronic equipment belong to the past. Separate AC outputs provide the ability to power heavy users via mains and/or generator.


  • For professional and semi-professional use
  • Quiet, powerful inverter with 200 % peak power
  • Compact, lightweight and hum-free thanks to HF technology
  • Pure sine wave voltage prevents malfunctions and damage to sensitive equipment such as adapters
  • High yield and more power from your batteries
  • Intelligent 3-step+ battery charger with low DC ripple current for fast charging times and long battery life
  • Power Assist: prevents blown fuses
  • A dynamic battery voltage window allows you to enjoy AC power for longer without damaging your batteries
  • Active Optima Cooling concept prevents unnecessary fan noise
  • Charges two individual battery banks simultaneously
  • An integrated MPPT solar charge controller allows for 30 % more yield from solar power for charging the batteries
  • Quick installation and reliable professional connections
  • CE, ABYC and RMRS certified


Sine Wave Inverter

  • Nominal DC voltage:24 V (19-32 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: 3500 W
  • Max. peak load: 7000W
  • Max. efficiency: ≥ 92 %
  • Max. ripple on DC (battery at full load): < 5 %
  • No-load power consumption on DC (ON/inverter OFF/OFF): 16 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
  • Synchronize with mains/generator: yes

Battery Charger

  • Input voltage range: 184275 V
  • Max. input current: 16 A
  • Max. charge current at 40 C / 104 F: 100 A at 28.5 V, adjustable
  • Secondary charger output voltage: 12/24 V selectable
  • Secondary charger output current: 10 A
  • Battery temperature sensor: yes, included
  • Battery voltage sense: through MasterShunt, otherwise automatic compensation

Transfer System

  • AC input (generator): 50 A (switched)
  • AC input (mains): 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
  • Solar Input (DC)
  • Input voltage range: 25-100 V
  • Max. PV peak power: 500 Wp
  • Max. input current: 19 A
  • Max. charge current: 15 A at 28.5 V
  • MPP Tracker: full power at 35-80 V


  • Display/read-out: LED display
  • Dimensions, hxwxd: 472 x 318 x 178 mm / 18.6 x 12.5 x 7.0 inch
  • Weight: 15.3 kg / 33.7 lb
  • Approvals: CE, ABYC, RMRS

Technical specifications

  • Charge characteristic: IUoUo, automatic 3-traps+ voor AGM/Gel/MLI/nat/tractie/spiraal
  • Recommended battery capacity: 200-600 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: yes
  • Owners Manual
    View (pdf)

    Installation Manual
    View (pdf)


**The price is subject to change at anytime without any notice.  We are not responsible for any typographical errors.  Any products can be cancelled from sale at any time.

** All Products sold here are Brand New unless specified Otherwise and come with Full Manufacturer's Warranty



Dear Customer. We are proud to serve you with any assistance via email ask@wmjmarine.com or
Toll free number at
1-877-330-9758 for USA or (858) 720-0776 for International Customers.
Fax: 501-631-4759


Customer Rating

Top Rated

We offer online shipment tracking


VeriSign Trust Seal
256-bit Encryption Shopping Cart

All personal information submitted is encrypted and 100% secure


Authorized Reseller
Garmin Autopilot
Garmin GPS Chartplotter
Garmin Fishfinder
Garmin Radar

Authorized Reseller
Raymarine Autopilot
Raymarine GPS Chartplotter
Raymarine Fishfinder
Raymarine Radar


Authorized Reseller
Simrad Autopilot
Simrad GPS Chartplotter
Simrad Fishfinder
Simrad Radar

Authorized Reseller
Lowrance Autopilot
Lowrance GPS Chartplotter
Lowrance Fishfinder
Lowrance Radar

Authorized Reseller

Furuno Autopilot
Furuno GPS Chartplotter
Furuno Fishfinder
Furuno Radar

Authorized Reseller
Humminbird GPS Chartplotter
Humminbird Fishfinder
Authorized Reseller
Marine Satellite TV
Marine Internet
JRC Fishfinder
JRC Radar
Search Light
Personal Beacon

Marine Autopilot
Satellite Compass
Marine Stereo
Authorized Reseller
Mounted VHF Radio
Handheld VHF Radio
Marine Satellite TV
Marine Internet
Bow Thruster
Sail Winches

Trolling Motors
Trolling Motors

Authorized Reseller

Authorized Reseller
Radar Mount
Battery Charger
Inverter Charger
Authorized Reseller
B&G utopilot
B&G PS Chartplotter
B&G Instrument


Blue Sea System
Distribution Panel
Battery Charger

Seastar Teleflex
Boat Steering
Engine Control
Power Assist
Marine Chart

Marine Chart

Sitex Autopilot
Sitex GPS Chartplotter
Sitex Fishfinder

Sitex Radar

Thermal Camera

Authorized Reseller
Battery Charger
Inverter Charger

Underwater Light

Underwater Light


Shadow Caster
Underwater Light

Underwater Light

Underwater Light

Battery Charger
Inverter Charger

Battery Charger
Inverter Charger
DC Converter
DC Power Supply


Water Pump
Marine Toilet
Authorized Reseller
Battery Charger
Inverter Charger
Marine Toilet
Water Heater
Waste Treatment




Recommended Site: WMJ Marine at Facebook   |  WMJ Marine at Linkedin  |  WMJ Marine at Twitter | Marine Electronics Store

Thank you for visiting WMJ marine for your Boating Equipment and Marine Electronics

Home | Anchor & Docking | Autopilot | Boating Accessories | Cabin/ Galley/ Deck | Communication | Electrical Supply | Electronics | Engine Parts | Fish Finder | Fishing & WaterSport | GPS & Chartplotter | Instrument | Lighting | Marine Radar | Navigation Tool | Outdoor Gears | Plumbing & Pump | Safety | Steering & Control | Trolling Motor | Factory Refurbished | Specials | Rebate of Month | WMJ Marine Blog
Our Company Policy | Privacy Policy | Shopping Cart

Marine Supply Specialist, USA - WMJ Marine Corporation

Copy Right: WMJ Marine Corporation 2004-2019