Mastervolt Mass Sine 24V/4000W battery converter 26024000 ...

MASTERVOLT Convertisseur sinusoïdal Mass Sine ultra 24/4000 - photo 4

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Mastervolt

26024000

Ultra 24/4000 Mass Sine Wave Inverter

The Mastervolt Mass Sine Ultra 24/4000 inverter delivers a continuous power output of 4000 W (peak up to 7000 W) to convert 24 V DC from your battery bank into pure sine wave 230 V AC. Part of Mastervolt’s proven professional range designed for extreme environments, it features the high-frequency V6 technology and MasterBus connectivity, allowing scalable configurations of up to 10 units in parallel or three-phase setups.

Includes: Mass Sine Ultra 24/4000 inverter.

Retail priceBenefit from the professional rate

£2,128.24 GBP

£2,128.24 GBP ~~£2,536.15 GBP~~

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In stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

IP rating	IP23
Marine-ready	Oui
Operating temperature range	-25 to 60
Cooling method	Forced ventilation
Dimensions (W x H x D)	318 x 472 x 178
Mounting type	Mural
Weight	15.0
Wired network	Masterbus
Wired input	RJ45
Wired output	AC terminal block, 2x MasterBus RJ45, 2x Sync RJ45
Nominal input voltage	24.0
Input voltage range	19 - 32
Nominal output voltage	230.0
Output frequency	50/60
Inverter waveform	Pure sine
Continuous power at 25°C	4000.0
Continuous output power (40°C)	4000.0
Peak power	7000.0
Max efficiency	92.0
Galvanic isolation	Oui
Parallel connection	Oui
Remote on/off support	Oui
Short-circuit protection	Oui
Overload protection	Oui
Recommended fuse rating	250.0
AC connection type	AC terminal block
AC output voltage tolerance	2
Alarm types	Overload, Temperature, Battery, Synchronization, System
Compatible displays	MasterView Easy, MasterView System
Configuration method	DIP switches, MasterAdjust software
Configuration software name	MasterAdjust
DC connection type	M8 bolts
Derating temperature threshold	40
Diagnostic LEDs	Yes
Dynamic input window	Yes
Rendement énergétique	92.0
External fan control	Yes
Frequency tolerance	0.005
Front panel display type	LED
Installation clearance	150
Installation environment	Interior
Required installation tools	13 mm socket wrench, small screwdriver
Max inverter efficiency	92
Off-mode consumption (switch)	0
Inverter overload indicator	Top red LED
LED indicator details	Power bus, AC output, battery
MasterBus powering	Yes
Max AC cable cross-section	10
Max devices per network	10
Max installation altitude	2000
Mounting orientation	Vertical
Network protocol	MasterBus
Neutral grounding required	Yes
Nominal DC current at full load	200
Operating modes	Standby, Inverting, Alarm, Overload, Low battery
Max output power	4000.0
Tension de sortie	230.0
Output voltage adjustment range	180 - 260
Protection contre la surchauffe	Oui
Parallel stacking capacity	10
PCB coating	Conformal coating
Pollution degree	PDII
Programmable functionality	Alarms, External fan control, Inverter on/off
Protection features	Overload, Overvoltage, Undervoltage, High temperature, Short circuit
Relative humidity	95
Software OS compatibility	Windows (MasterAdjust)
Cut-off voltage (low battery)	19.0 - 21.0
Cut-off voltage (low battery, load ≤ 2%)	22.0
Three-phase capability	Yes
Max three-phase units	9
Total harmonic distortion	1
USB connection type	Via MasterBus USB interface
Type de signal	Pure sine

Detailed description

The Mastervolt Mass Sine Ultra 24/4000 sine wave inverter is designed to meet the strictest electrical requirements for professional and semi-professional marine applications. Converting a 24 V DC input voltage (programmable range 19 to 32 V) into a pure sine wave 230 V AC output (±2%), it ensures perfectly stable power with a total harmonic distortion (THD) below 1%. This signal quality is essential to prevent failures and protect sensitive onboard electronic equipment.

Rated power and thermal tolerance

Unlike standard inverters that experience efficiency losses above 25°C, the Mass Sine Ultra maintains its continuous output of 4000 W up to an ambient temperature of 40°C. For starting complex, high-energy equipment such as air conditioning compressors or electric motors, it features an impressive peak capacity of 7000 W. Its overall efficiency exceeding 92% minimizes energy losses, while its no-load consumption remains controlled (16 W in normal operation, 7 W in economy mode).

Extreme scalability and MasterBus network

What sets the Ultra series apart from the classic Mass Sine range is its modular architecture designed for large-scale systems. Equipped with two MasterBus ports and two Sync ports, this inverter allows parallel coupling of up to 10 units to multiply output power. Additionally, it supports complex three-phase configurations (up to 9 units in 3x3), all configurable via the MasterAdjust software interface. This network integration enables precise monitoring and control from a MasterView display or a global supervision system.

Robust design for the marine environment

Housed in a compact chassis (472 x 318 x 178 mm) weighing 15 kg, this inverter features electronics protected by a tropicalized coating (conformal coating) resistant to humidity levels up to 95% without condensation. Certified CE, ABYC, and E-mark, it offers an IP23 protection rating suitable for engine room installations. Its internal algorithms also provide complete protection against overloads, short circuits, and extreme battery voltage variations.

Documentation

Type	Nom
	EN - Manuel d'utilisation et d'installation - Convertisseur sinusoïdal Mass Sine ultra 24/4000
	EN - Installation Manual - Mass Sine Ultra 24/4000 Sinusoidal Inverter Parallel/Three-Phase
	EN - Technical Datasheet - Mass Sine Ultra 24/4000 Sinusoidal Inverter

Expert opinion

Pol CONIN

Digital Manager

« Industrial power and network scalability without compromise »

The Mastervolt Mass Sine Ultra 24/4000 converter stands out as a must-have for high-power marine electrical systems. Its ability to deliver a continuous output of 4000 W up to 40°C sets it apart from consumer models, which suffer severe derating as early as 25°C. The 7000 W peak power reserve is particularly critical for handling massive inrush currents from air conditioners, watermakers, or compressors at startup. This converter excels primarily due to its advanced network architecture: its native Sync and MasterBus ports enable parallel coupling of up to 10 units or the creation of complex three-phase networks. It is the preferred choice for commercial vessels and yachts requiring uncompromising reliability and unlimited scalability.

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Ultra 24/4000 Mass Sine Wave Inverter

£2,128.24 GBP

£2,128.24 GBP ~~£2,536.15 GBP~~

Frequently Asked Questions

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What is the continuous power output of the Mass Sine Ultra 24/4000 inverter?

It delivers a continuous output of 4000 W, even at an ambient temperature up to 40 °C, with no loss of efficiency.

What is the peak power of this model?

Peak power reaches 7000 W. This energy reserve is ideal for starting high-load equipment smoothly, such as air conditioning compressors or large electric motors, without sudden jolts.

What type of electrical signal does this inverter generate?

It generates a pure sine wave alternating current (True Sine Wave) of 230 V with a total harmonic distortion (THD) below 1%. This ensures a perfectly stable and safe power supply for your most sensitive electronic equipment.

What are the dimensions and weight of the Mass Sine Ultra 24/4000?

The unit has the following physical specifications:

Height: 472 mmWidth: 318 mmDepth: 178 mmWeight: 15 kg

What is the required input voltage for this converter?

It is designed to operate with a 24 V DC battery bank. Its input voltage range is programmable and spans from 19 V to 32 V to accommodate different battery types.

Can multiple converters be installed in parallel?

Yes, thanks to its modular architecture and dedicated Sync ports, you can couple up to 10 units in parallel to multiply the overall output power of your electrical system.

Is it possible to configure a three-phase electrical system with this equipment?

Absolutely, the Mass Sine Ultra supports complex three-phase configuration. You can integrate up to 9 units (3x3 configuration) to meet the needs of large-scale marine installations.

What battery capacity is recommended for this converter?

For optimal operation, use a battery bank with a capacity greater than 350 Ah.

Which DC cable section should I use for the installation?

To ensure system safety and efficiency, use DC cables with a minimum cross-section of 70 mm², always paired with a 250 A inline fuse.

Does the converter consume a lot of power when powered on but unloaded?

No, its standby consumption is well managed to preserve your batteries:

16 W in normal operation7 W in energy-saving mode4 W in remote shutdown mode

Is the Mass Sine Ultra 24/4000 compatible with the MasterBus network?

Yes, it is fully compatible. It includes two MasterBus ports, enabling monitoring, configuration, and precise control of your installation via a MasterView display or a PC running MasterAdjust software.

What is the ingress protection rating of this converter?

It has an IP23 ingress protection rating. This means it is protected against finger contact and water spray at less than 60 degrees from the vertical. It is designed exclusively for indoor installation.

What is the operating temperature range of the converter?

It operates optimally between -25 °C and 60 °C. Note that a preventive power reduction (derating) is automatically applied when the ambient temperature exceeds 40 °C to protect internal components.

What are the safety certifications for this device?

The Mass Sine Ultra 24/4000 complies with the strictest marine and mobile sector safety standards. It holds international certifications including CE, ABYC, and E-mark.

Is space for ventilation required around the device during installation?

Yes, it is essential to leave at least 150 mm of free space below the converter. This facilitates cable routing, access to the DIP switches, and ensures adequate ventilation to prevent hot air accumulation.

Can the output frequency be changed from 50 Hz to 60 Hz?

Yes, the output frequency is selectable between 50 Hz and 60 Hz (±0.005%). This setting can be adjusted easily via the MasterBus network.

Does the device have a front-panel display?

Yes, the front panel is equipped with a practical display panel featuring:

LED indicators showing power demand (in 20% increments)Battery charge statusAn AC output indicatorA main On/Off switch

How is the converter protected against overloads or excessive temperatures?

The device includes full automatic protections. It is protected against short circuits, overloads (indicated by a red LED on the front panel) and excessive internal temperatures. In case of a critical fault, the inverter switches to safety mode to prevent any damage.

What is the overall efficiency of this Mastervolt converter?

The Mass Sine Ultra 24/4000 delivers excellent energy efficiency with a maximum efficiency of 92% or higher. This helps preserve your battery bank's autonomy and minimizes energy loss as heat.

Should the neutral be connected to ground on this inverter?

Yes, for a safe installation fully compliant with local electrical regulations, it is mandatory to connect the AC output neutral conductor (N) to the ground (PE / GND) of your vessel or vehicle.