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Boatersland Marine > Electrical > Battery Isolators > NewMar Battery Isolators > Newmar 1-3-70A Isolator 1 Alt 3 Batt 70 Amp
  Newmar 1-3-70A Isolator 1 Alt 3 Batt 70 Amp
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Newmar 1-3-70A Isolator 1 Alt 3 Batt 70 Amp

Item #: NEW1-3-70A




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These heavy duty isolators allow charging multiple batteries automatically from one or two alternators, and prevent discharge or "dumping" of one battery into another. each battery is charged according to its need without overcharging.

Rated for 12-48 volt negative ground DC systems. Feature conservatively rated diodes and a rustproof anodized aluminum heat sink case. Models are available for 70, 120 and 165 amp alternators.


  • Heavy duty construction
  • Rated for systems up to 48 volts DC
  • Rust-proof anodized aluminum case
  • Stainless steel mounting hardware provided
  • Protective covers provided for terminals
Performance Specifications

Operating temper ature: -40 to +80°C
Duty cycle: Continuous rating to 50° C Dera te linearly to 70% @ 80° C
Temp. rise: 95° C at full rated current ( mount vertically for optimum cooling)
Voltage drop: At 50% load 0.7V - At full load 0.9V

Mode l Alternator Battery Max Amperage Weight

  Sources Bank Input Capacity Lbs Kg L W H  
1/3/70 1 3 70 2 0.9 3.25 4.5 3.1 in

Did you Know?

ALL products we sell are factory new and come with the full Manufacturers Warranty!

Newmar 1-3-70A Isolator 1 Alt 3 Batt 70 Amp - NewMar Battery Isolators