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BLUE SEA SYSTEMS Starting Isolation (SI) Dual Sensing Automatic Charging Relay

Model # 8646283Mfg # 7610

$99.99

Customer Reviews
In stock online.

Product Description

  • Automatically combines batteries during charging, isolates batteries during engine cranking and when not charging
  • Senses charge source on either battery bank
  • Under voltage lockout won't close when the lower battery is below 10.8V@12V or 21.6V @24V operation

This device allows temporary isolation of house loads from the engine circuit during engine cranking to protect sensitive electronics. It automatically combines battery banks during the charging cycle and isolates them while discharging. 12/24 Volt auto ranging voltage input. Hermetically sealed contacts/vaporproof/ignition protected for use aboard gasoline powered boats. Remote LED output indicates relay state away from ACR; LED light indicates when batteries are combined. Supports high-output alternators up to 120A.

  • Amps: 120A continuous @12/24V; 210A for 2min.; 280A 5sec. surge
  • Volts: 12/24V DC; Closing voltage 13.5V/27V; Opening voltage 12.7V/25.4V; 34 sec. delay
  • Dimensions: 3.9"L x 3.5"W x 1.9"H
  • Approvals: ISO 8846, CE, Meets SAE J1171 external ignition protection requirements
  • Waterproof: Rated IP67-temporary immersion for 30 minutes
  • Warranty: Five years

Manufacturer's Documents

Specs

Starting Isolation (SI) Dual Sensing Automatic Charging Relay

Amperage 120A 280A surge
DC Voltage 12/24V
Inverter/Charger Type Battery Relay
Type Charger
Warranty 5-Years

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REVIEW SNAPSHOT®

by PowerReviews
Blue Sea SystemsStarting Isolation (SI) Dual Sensing Automatic Charging Relay
 
3.0

(based on 6 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

75%

of respondents would recommend this to a friend.

Pros

  • Easy to install (5)
  • Durable (3)

Cons

    Best Uses

        • Reviewer Profile:
        • Advanced (4)

      Reviewed by 6 customers

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      Displaying reviews 1-6

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      5.0

      Great product but must stay within specs

      By Just-speed

      from Florida

      About Me Advanced

      Pros

      • Durable
      • Easy To Install
      • Reliable
      • Waterproof

      Cons

        Best Uses

        • Small Boats

        Comments about Starting Isolation (SI) Dual Sensing Automatic Charging Relay:

        I have had this product for about 2 years. Been flawless up til now. Its just such an ideal product in a small size. It does it all and you have nothing to worry about.

        Though now I have to look at replacing or upgrading because now for some reason after running for while I find second battery is dead and I look at box and light flashing. It stops charging second battery and then goes into lockdown once second battery voltage drops to low. No clue why but could be I'm drawing to much from battery.not sure yet.

        (1 of 2 customers found this review helpful)

         
        1.0

        Not an Isolator but an Equalizer

        By MM

        from Charleston SC

        About Me Professional

        Pros

        • Durable
        • Easy To Install

        Cons

          Best Uses

            Comments about Starting Isolation (SI) Dual Sensing Automatic Charging Relay:

            I used this product as it suggests...as an isolator. I installed it between two 4D start batteries and a genset start battery attempting to "isolate" the genset battery. The onboard 110vac charger went to fault allowing the batteries to discharge. As the two 4D batteries went the "isolator" opened and took the genset battery with them. The result...my client couldn't start the genset to recharge the two 4D's. Unhappy client.

             
            5.0

            High Quality item, works as designed

            By Flagship CP

            from Hayward, CA

            About Me Advanced

            Verified Buyer

            Pros

            • Durable
            • Easy To Install

            Cons

            • Takes a 3-8 inch lug

            Best Uses

            • Fire engine charging syst
            • SUV CP charging system

            Comments about Starting Isolation (SI) Dual Sensing Automatic Charging Relay:

            I replaced my old West Marine 70/2 battery combiner with this item and it worked perfectly after running through all system tests. I have a mobile command post SUV with a fire engine dual battery charging system (Kussmall) and this item was a perfect upgrade/replacement for my failing 70/2. I would highly recommend this item if it fits your application. It does take a 3/8" lug, which would have been nice to know upfront, it's not listed in spec sheet. I did not install the remote LED, the imbedded one is adequate, although small.

            (1 of 1 customers found this review helpful)

             
            1.0

            This unit failed 3 times.

            By Dan

            from Florida

            About Me Advanced

            Pros

            • Easy To Install
            • Waterproof

            Cons

              Best Uses

                Comments about Starting Isolation (SI) Dual Sensing Automatic Charging Relay:

                I saw this unit at the Miami boat show when it came out and won best of show. It is a great idea but does not live up to the billing. The guys at product support are real helpful but I needed them a lot. I had to change the main component three times and the unit left me with out a charge many times. Usually on a week or two long trip to the keys. I am back to a simple battery switch and I am in charge of charging.

                (2 of 2 customers found this review helpful)

                 
                4.0

                Works great but there is a trick

                By Marvin the Martian

                from Wa st

                About Me Advanced

                Pros

                • Easy To Install

                Cons

                  Best Uses

                    Comments about Starting Isolation (SI) Dual Sensing Automatic Charging Relay:

                    I don't know what Robert is talking about. The installation is simple and straight forward. The unit is well built. There are tabs on the sides and bottom which are removable to accommodate the battery leads.

                    One advantage is that it will close the relay with a small charger on either battery and charge both batteries.
                    The only difficulty ( the trick )in installation, comes from the start isolation feature which requires you to locate a momentary circuit coming from the key or the starter solenoid. It is an option to install but if you have an engine that will draw down your power enough to kick off your chart plotter then it's a good option.

                    (3 of 6 customers found this review helpful)

                     
                    2.0

                    Yellow-colored cover tabs ...

                    By Robert

                    from Undisclosed

                    Comments about Blue Sea Systems Starting Isolation (SI) Dual Sensing Automatic Charging Relay:

                    Yellow-colored cover tabs are fragile, and break easily. No instructions come with the devce. There is lttle flexibility in be able to angle cales to attach to the device.

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