New smoke shuts off AC power

Hmmm Seems like it would likely already be too late by the time it sensed smoke and besides, you'd have to have one on every breaker run or ..... is there such a thing as a whole house GFI breaker?

"Installation: Install smoke detector in a suitable location near or on ceiling. Prepare leads for connection to Host Circuit. Identify labels on leads "N" for neutral and "G" for ground. Connect leads to appropriate conductors in a suitable junction box.

Host circuit must be protected by GFCI breaker. " ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

So this thing trips the ONE GFCI its wired to? Who wires a smoke detector to a GFCI circuit?

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I see it as a good use in labs and factory's etc where you need machines shut down but I agree the shunt trip breaker and or a good contactor will do the same trick I have used shunt trip breakers for computer server rooms since late 70's