The Victron MultiPlus 12/1200/50-16 combines a true sine wave inverter, an adaptive 4-stage battery charger, and a high-speed AC transfer switch in one compact enclosure. It suits a 12V self-build electrical system where you need dependable mains power for heavier loads, plus a proper charger to top the battery bank back up from shore power or a generator.

The full bridge plus toroidal transformer topology has proven its reliability over many years in the field. The inverter is short-circuit proof and protected against overheating, whether from overload or high ambient temperature.

Key features

• 1200VA (1000W continuous at 25°C) pure sine wave inverter with a 2400W peak rating for high-inrush loads such as power tools, compressors and LED drivers

• 50A adaptive 4-stage battery charger (Bulk, Absorption, Float, Storage)

• PowerControl and PowerAssist: set a maximum shore or generator current and the unit tops up any shortfall from the battery, so a limited AC source is never overloaded

• 16A high-speed AC transfer switch with UPS-grade changeover in under 20 milliseconds, so connected equipment does not drop out

• Search Mode cuts no-load power draw by around 70% by switching the inverter off between load checks every two seconds

• Programmable relay, factory set as an alarm relay for overheat, high ripple or low battery pre-alarm conditions

• VE.Bus communication port for remote monitoring and configuration via a GX device

• Can run in parallel with up to five further units, or be configured for three-phase operation

Technical specification

• Battery voltage: 12V nominal (9.5-17V DC input range)

• Continuous output: 1200VA / 1000W at 25°C (900W at 40°C, 600W at 65°C)

• Peak power: 2400W

• Maximum efficiency: 93%

• Zero-load power draw: 10W (3W in Search Mode)

• AC output: 230V, 50Hz

• AC input range: 187-265VAC, 45-65Hz

• Charge voltages: 14.4V absorption, 13.8V float, 13.2V storage

• Maximum battery charge current: 50A

• Transfer switch: 16A

• Communication: VE.Bus

• Internal DC fuse: 200A

• Operating temperature: -40°C to +65°C, fan-assisted cooling

• Protection rating: IP21

• Dimensions: 406 x 250 x 100mm

• Weight: 8.2kg

• Battery connection: screw terminals, 35mm² (2 AWG)

Comes with a 5-year manufacturer warranty as standard (extendable to 10 years). This is a buy-to-order item: once your order is placed we source it directly and ship it straight to you.