If reliability, the JQC-3FF-S-Z has a solid track record in everyday setups.
Cole Hersee SureStart 48513 Automatic Low Voltage Disconnect Switch 100A 12/24V
If you want something simple, the Honeywell RA8366 does the job without fuss.
A nice touch is the clear labeling on the protection relay, so you can wire it with less guesswork.
You will find that DIANN is printed boldly on the unit, which helps when you are sorting parts.
What stands out about this relay is its White-Rodgers branding, a name long associated with electrical components.
The auto-off and timer work together so you do not have to hover over switches all evening long.