SBS-30 Second Battery Switch/Charger
Voltage Sensitive Relay
The CruzPro all solid-state SBS-30 Second Battery Switch (Voltage Sensitive Relay) will automatically connect an independent instrument, radio or windlass battery to your main battery bank whenever the voltage of the main battery is higher than the second battery. It will also disconnect when the main battery voltage is lower. The SBS-30 can handle up to 30 amps, has built in thermal protection, and the operation is completely automatic and silent. An LED tells you what it's doing.
The SBS-30 will work with either two 12V or two 24V batteries, but you cannot mix them. The operation is completely automatic, solid-state with four 125-amp FET power transistors in parallel (extreme low resistance, so no voltage drop) and completely silent. No relay noises to keep you awake.
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