Cole Hersee 48120 Battery Isolator

Availability:

1 in stock (can be backordered)


For vehicles with two batteries, these devices electrically isolate the batteries to prevent the battery with the higher charge from draining into that with the lower charge. In addition, both batteries can be charged simultaneously from one source.

The amp rating of each item is the maximum alternator rating. Most alternators on new vehicles have an integral electronic voltage regulator that requires the use of the 4-stud battery isolator. The small 4th stud is for connection to a circuit switched by the ignition switch. The newer alternators were first introduced by Delco and are therefore sometimes called ‘Delcotron-type alternators’. A 4-stud battery isolator can be used with older pattern alternators (in this case the 4th stud will remain unconnected), but a 3-stud battery isolator cannot be used with the Delcotron-type alternator.

Features
General purpose Battery Isolators for 12-36V DC negative ground systems
Electronic components are embedded to give excellent protection from adverse conditions, such as contamination and vibration
Integral heat sink provides efficient heat dissipation

  • Manufacturer: Cole Hersee
  • # of Battery Banks: 2
  • # of Alternators: 1
  • Termination: (3) 5/16″ Studs
  • Amp Rating: 140A
  • For use in 12-36 volt DC negative ground systems
  • Mounting holes: (4) 9/32″ holes
  • Battery isolators are designed for vehicles and equipment with multiple batteries – one for starting the engine and another for powering accessories
  • Battery isolators prevent a battery with a higher charge from draining into a battery with a lower charge
  • Ensures your accessories won’t drain your starting battery
  • Allows for both batteries to be charged simultaneously from one source
  • Electronic components are embedded for protection from contamination and vibration
  • Integral heat sink provides efficient heat dissipation

Wiring diagram

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Weight 1 lbs
Dimensions 6 × 5 × 3 in

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