Are ALL the outlets surge protected or is it like like 3 main protected the rest regular?

Breaker is built in front like all protectors... covers the entire unit

What is the AC suppression joule rating of the BELKIN BV112050-06 surge protector?

The AC suppression joule rating of the BELKIN BV112050-06 surge protector is 3996 joules.

The BELKIN BV112050-06 surge protector has 12 outlets.

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BELKIN BV112050-06 6' 12 Outlets 3996 Joules Surge Protector with USB Charging