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Dual Operation VSS (Voltage Sensitive Switch)
and Emergency Parallel
These Voltage Sensitive Switches (VSS) automatically sense connected battery bank
voltages and provide optimal, efficient charging of the second bank. The VSS allows
for independent battery banks to be combined or isolated based on the presence of a
charging source (such as an engine alternator or battery charger), while also offering
remotely activated, high current, emergency parallel connection. Designed and
constructed for longevity in the marine environment with tinned copper conductors,
stainless steel nuts, and high temperature, fibre reinforced plastics. The units are
ignition protected, provide On/Off switching operation, and may be recessed or
surface mounted.
• Dual battery sensing
• Remote emergency parallel function:
can be operated through a momentary
button on the dash which will parallel
the batteries for 10 minutes. Once this
10 minutes has passed, if the voltage is
up high enough, the voltage sensitive
switch will stay engaged. If not, it will
disengage.
• Manual override option
720-MDVSO benefits
• Dual 12/24 volt operation
(both banks must be same voltage)
• Low power consumption (<6mA)
• Lowered cut in voltage (13.3/26.6V)
suits low output alternators and high
temperature environments
80-701-0018-00, and 720-MDO-EP:
Emergency Parallel Only
• 10 minute remotely activated
emergency parallel function
(no voltage sensitive function)
• 12/24 volt operation
(both banks must be same voltage)
Remote Emergency
Parallel Switch
Used for convenient remote activation of
the 10 minute emergency parallel function
on these motorised Voltage Sensitive and
Emergency Parallel switches. It can be
mounted standalone or within the Contour
Connect panel range.
Item # 80-724-0007-00
IT IS IMPERATIVE THAT THE NEGATIVE (BLACK) FOR THE MD/MDVS IS TAKEN
DO THIS WILL CAUSE THE UNIT TO WORK ERRATICALLY. ONLY ONE NEGATIVE
FROM THE SAME BATTERY THAT IT IS ISOLATING. FAILURE TO
MUST BE SUPPLIED TO EACH UNIT FOR CORRECT OPERATION.
RED
GREEN
BLACK
THESE TWO CABLES MUST BE
TERMINATED INTO WAGO PLUG
(ON)/OFF
SWITCH
OUTPUT
INPUT
80-724-0006-00
701
701
720-MDVSO
Manage:
Voltage Sensing Switch
Item #
in
LxWxH
mm
LxWxH
Volts
(V)
Rating
(A)
Engages
(V DC)
Disengages
(V DC)
701-MDVS
2.7"x2.7"x4" 69x69x101 mm 12 275 13.7
12.2–13.00
720-MDVSO
4"x4"x4.3"
102x102x110 mm 12/24 500 13.3/26.6 12.7/25.4
701-MDVS-24V
2.7"x2.7"x4" 69x69x101 mm 24 275 27.4
24.4–26.00
80-701-0018-00
2.7"x2.7"x4" 69x69x101 mm 12/24 275 Emergency Parallel Only
720-MDO-EP
4"x4"x4.3"
102x102x110 mm 12/24 500 Emergency Parallel Only
701-MDVS