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The REDARC Smart Start SBI224 is used in dual battery systems to protect the start battery from excessive discharge while the auxiliary battery is supplying non-essential loads. The SBI224 provides 24 volt DC incorporating 200A of continuous ratings. The 200A battery isolator is best suited for heavy-duty operations.

Power Saving Technology

The Smart Start SBI224 battery isolator is mostly used in commercial vehicle dual battery systems, it incorporates electronic components preventing the solenoid from generating high voltage transients. Used instead of a diode battery isolator due to reduce voltage drop associated with diode type isolation. It features sophisticated fault detection and LED indication of operation to warn the user of faults including over-voltage, voltage drop and excessive current draw conditions.

The Smart Start SBI224 battery isolator is a safe way to charge a heavy-duty dual battery systems and should often be installed with a high quality fuse kit.


  • Overmould design
  • Compact in size and easy to install
  • Silver contacts for longer life and suitable for marine applications
  • Power saving technology
  • Fault indication
  • Fully surge protected


Redarc Smart Start Battery Isolator 24V 200A

Sales Tax Included |
    • Input (Operating) Voltage: 24VDC
    • Output Current Rating (Cont.): 200A
    • Input Fuse Rating: 200A
    • Output Fuse Rating: 200A
    • Warranty: 2 Years
    • Length (mm): 100
    • Width (mm): 95
    • Height (mm): 90
    • Weight (kg): 0.6
    • Type Approval: CE
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