The Mastervolt Mass 24/100-3Phase Acculader is a professional-grade three-phase battery charger engineered for demanding marine, industrial, and recreational applications requiring reliable power supply. With a nominal output of 24 V and a total charging current of 100 A at 28.5 V, this robust charger supports battery banks from 200 to 1000 Ah capacity. Designed for continuous 24/7 operation, it delivers full output power even at ambient temperatures up to 45 °C and operates within a wide temperature range from -25 °C to 80 °C.

The charger features automatic three-stage IUoUo charging technology compatible with Gel, AGM, wet cell, and Lithium Ion batteries, including the ability to charge completely depleted batteries. Constructed with a lightweight, corrosion-resistant anodized aluminum housing rated IP23 for protection against moisture and condensation, the unit measures 420 × 318 × 130 mm and weighs 7.7 kg.

Key technical attributes include galvanic isolation, an integrated temperature sensor with DC voltage compensation, a Current Control function to prevent fuse tripping during voltage drops, and MasterBus compatibility for remote monitoring and configuration. The charger accepts three-phase input voltage from 365 to 550 V at 50/60 Hz, maintains a power factor above 0.95, and includes comprehensive protections against overheating, overload, short circuit, and high/low battery voltage.

Certified to CE, ABYC A-31, RRR, and RMRS standards, it is also GMDSS compatible for maritime safety applications and supports parallel operation for multiple chargers. With a mean time between failures of 180,000 hours at full power, this charger delivers stable, ripple-free power supply even without battery connection, making it suitable for critical applications where dependable charging performance is essential.