The REDARC Smart Start SBI212 200A is a 12V DC 200 Amps microprocessor-controlled, dual battery isolator designed to protect the start battery from excessive discharge while allowing the auxiliary battery to supply charge to non-essential loads.

The REDARC Smart Start® SBI212 is a battery isolator used as a solenoid priority system to protect that start battery from excessive discharge while the auxiliary battery is supplying non-essential loads. The SBI212 provides 12 volt DC incorporating 200A of continuous ratings, the battery isolator is designed for extremely heavy-duty operations.

Primarily used in commercial vehicle dual battery systems, it incorporates electronic components that will prevent the solenoid from generating high voltage transients. It is better than a diode battery isolator due to the voltage drop associated with diode type isolation. It features a low standby current draw and sophisticated fault detection and LED indication of operation to warn the user of faults including over-voltage, voltage drop and excessive current draw conditions.