Dometic BUTTNER MT LB 40 Instructions De Montage page 13

6 Target Group
The electrical power supply must be connected by a qualified electrician who has demonstrated skill and
knowledge related to the construction and operation of electrical equipment and installations, and who
is familiar with the applicable regulations of the country in which the equipment is to be installed and/or
used, and has received safety training to identify and avoid the hazards involved.
7 Technical description
General description
The charger charges the house battery by the alternator with the following charging current while driving:
• MT LB 40: 40 A
• MT LB 80: 80 A
• MT LB 24-40: 40 A
• MT LB 24-60: 60 A
• MT LB 12/24-20: 20 A
• MT LB 12/24-40: 40 A
• MT LB 24/12-40: 40 A
• MT LB 24/12-80: 80 A
The charger can be adapted to different battery types via DIP switches.
The charger offers the following functions:
• Microprocessor-controlled, temperature-compensated IU0U charging programs for various battery types
• Buffer operation: Compliance with the charging characteristics even when the battery is charged with con-
sumers connected
• On-board mains suppression filter: Ensures parallel operation of the charger with other charging sources, for
example mains supply chargers, solar systems, or generators
• Automatic compensation of voltage loss caused by the charging cable length (house battery)
• AUX connection usable for controller output, split-charge relay, or electrical devices (only MT LB 40, MT LB
80, MT LB 24-40, MT LB 24-60)
The charger has the following protective mechanisms:
• High voltage protection
• Low voltage protection
• High temperature protection
• Low temperature protection (only LiFePO4 batteries)
• Battery overcharge protection (only with temperature sensors)
• Reverse current protection
• Protection against short circuit
• Reverse polarity protection (only for house battery connection)
The charger can be connected to the TD283 display (optional) for remote control. If a Bluetooth N-BUS device is
present in the N-BUS network, the mobile app can be used for controlling the charger.
A temperature sensor can be connected to monitor the battery temperature during the charging process.
MT LB EN
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