Mass Systemswitch 16 kW (230 V) automatic switch

The Mass Systemswitch is the decision-making core of your AC electrical system. It automatically and safely manages switching between three power sources (generator, shore power, inverter) to distribute them to four specific outputs, thus preventing any risk of short-circuit.

The device has three inputs sized to meet different power requirements:

Generator: 63 AShore power (mains): 40 AInverter: 25 A

The system always gives absolute priority to the generator. If it is not active, priority automatically switches to the shore power. Finally, if neither of these two main sources is available, power switches to the inverter.

The switch intelligently distributes power via four outputs:

Inverter only (no interruption): powered solely by the inverter.Short break (25 A): switches between the 3 sources.Power output (40 A): powered by the shore power or generator.Generator only (63 A): powered exclusively by the generator.

The "Load on Inverter" mode (load on inverter) forces the "Short break" output to be powered by the inverter, even if shore power or the generator is available. This is a useful function to prevent overloading the generator or tripping a low-amp shore power outlet.

Yes, it includes an adjustable start-up delay of 0 to 10 seconds to protect the generator. It also continuously monitors the generator's voltage and frequency. Power is only transferred to your devices once these parameters are perfectly stable.

Switching time is ultra-fast, ranging from 12 to 22 milliseconds for startup, and 4 to 19 ms for shutdown. On the dedicated "Inverter only" output, there is no interruption, ensuring perfect continuity for sensitive equipment.

No, its power consumption is very low. It uses about 33 W when all AC inputs are active. If only the inverter is running, consumption drops to less than 1 W, which preserves your batteries.

The enclosure has an IP23 protection rating. It is protected against water splashes up to 60° from the vertical, but it is not fully waterproof. It must be installed in a dry location, protected from direct rain and excessive humidity.

The housing measures 340 x 261 x 144 mm (Height x Width x Depth) and weighs 5 kg. This compact format facilitates integration into technical spaces aboard boats.

For AC power wiring, cables with a cross-section between 0.5 and 10 mm² (AWG 20-7) are recommended. For remote control connections, a cross-section of 0.14 to 2.5 mm² (AWG 26-13) is sufficient.

Yes, the Mass Systemswitch does not include built-in circuit breakers as standard. You must install appropriate circuit breakers on your distribution panel to protect each output circuit.

No, this device does not include earth leakage protection (RCD). You must install appropriate residual current circuit breakers in your overall electrical system to ensure personal safety on board.

Yes, it is fully compatible with the MasterBus communication protocol. This enables seamless integration with other Mastervolt equipment, offering centralized monitoring on a single display and the ability to program automated events.

Yes. You can connect a Mastervolt remote control panel or use the MasterBus interface to monitor the status of power sources and manually or automatically activate advanced functions.

No, this specific model is designed for a nominal input voltage of 230 V (50/60 Hz) with a tolerance range of 200 to 250 V. It is not compatible with American electrical systems operating at 110/120 V.

The "Inverter only" output (no interruption) is ideal for critical and power-sensitive equipment. It is recommended to connect your computers, servers, or electronic navigation equipment to it.

The "Generator only" output (rated up to 63 A) is reserved for high-power energy consumers requiring the generator's capacity to operate. This includes, for example, a watermaker, heavy air conditioning systems, or electric cooktops.

Yes, although it is optimized for the Mastervolt ecosystem (notably for reporting information via MasterBus), switching standard AC inputs (230 V) will work autonomously with converters or generators from other brands, provided the power ratings comply with the device's limits.