Motorised Battery Switch
Model: 720-MDO (Version 8)
OPERATION AND INSTALLATION INSTRUCTIONS
The 720-MDO Version 8 offers a number of advanced installation options, whereby the motor/circuit board
can be fed from an independent 12V or 24V supply, so the switch contacts are fully isolated and can:
• Still be operated in case the switched battery is flat
• Control higher voltage circuits e.g. 32 or 48 volt circuits
• Control negative cables in circuits (e.g. full isolation in metal hulled craft)
• Ensure engine electronics are fully isolated from all loads
• Note Version 8 720-MDO’s can be identified by the 7 core connection cable with 3 cores terminated in the
Wago plug, and 4 cores crimp-terminated
Typical installation is with a
key-operated switch at the helm
station and with the motorised
battery switch installed as close
as practical to the battery bank.
Although any switch may be used
BEP offer the specially developed
80-724-0006-00 key switch
(pictured at right).
Another option is to use BEP’s Wireless Remote
Control. This is similar to a car remote, and
provides access from up to 80m. Working
through a 4 channel relay, the wireless
remote (part number 80-911-0045-00)
can be configured to control items such
as motorised battery switches, entry
lights, hatch lifters etc in order to
offer safe, easy entry to your vessel
(pictured at right).
SPECIFICATIONS:
• Continuous rating:
500 Amps DC - minimum 2x95mm²
(2x 3/0) cables
• Intermittent rating:
700 Amps DC - minimum 2x95mm²
(2x 3/0) cables
• Cranking rating:
2500 Amps DC - minimum 2x95mm²
(2x 3/0) cables
• Maximum Voltage:
32 Volts DC (for motor/PCB supply)
50 Volts DC (switch contacts – note
motor/PCB supply requires 12/24 volts)
• Auto operating range:
8 to 32 Volts DC
• Operation:
Manual On/Off, Auto On/Off
• Mounting:
Recessed or surface
• Ignition protected
Meets UL 1107 standards
• IP Rating
IP65
• Stud Size:
2 x 12mm (1/2”) – See Installation
section for torques
• Materials:
Tinned copper conductors/studs,
stainless steel nuts, high temperature
fibre reinforced plastics
• Power draw:
Switch in off positions: <=5mA@12V or 24V
Switch in “Auto On” 9mA @12V,
13.5mA @24V
Wires For Standard Connection:
Red
• LED Wire
Green
• Control Wire From
Remote Switch
Black
• Supply Negative
Input Stud
• High Current Connection
From Battery
Ouput Stud
• High Current
Connection To Loads
Terminated into
Wago plug
}
Wires For Advanced/Optional Connections:
Brown
• Power Supply From Input Stud
Orange
• Motor/PCB Supply Positive #1
Brown takes power from the Input stud, and
Orange takes this to the circuit board/motor to
control the battery switch.
Blue
• Power Supply From Output Stud
White
• Motor/PCB Supply Positive #2
Blue takes power from the Output stud. White is
a secondary connection to provide power to
circuit board/motor. Both isolated as standard.
Supplied
connected
Supplied
isolated
}
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