A shunt trip breaker has 2 additional terminals on it, which connect to the trip coil. Applying voltage (usually 120V) across these terminals will instantly drop the breaker out. The ones I have used take an additional space in the panel, so squeezing one into a crowded panel may take some juggling. They also cost $$$.Assuming that you are wanting to trip one from an ansul system, you use the normally open output contacts of the system to switch 120V to the shunt trip when the system is triggered.If you have to shunt trip more than one circuit, you can wire the shunt trip coils in parallel, to trip all of them from one input.

- John Durham (Bishop, CA), 03/25/2017

There is a box mounted on the wall with the contacts in it I think. I couldn't get to it to see much because they were installing the fire system. the guy installing the piping didn't know much except that he thought it needed a 30 amp breaker, turn on the exhaust fan and turn off the supply fan. I'll be there at 7:30, They said the building inspector not to be there until at least 10:00. "We need it done as fast as you can, you work and we will get whatever parts you need" they said.

- Dana Rios (German, OH), 03/25/2017

What do they want to shut off?The gas can be shut off by a manual/auto device, activated on discharge.Electric appliances, frierlaters,grills etc need to be shunted.The hood exhaust must remain on. (MA code)In short, not your problem to hurry, (I used to be the suppresion guy, My office would make you scramble.) Get your inspection then follow up.Basicaly, a shunt trip breaker has a 120V coil on it.15 or 20A, Just an auxilary switch in the suppresion control cab. Switch the hot thru the N/O contacts at the suppresion system, to control the coil of the shunt breaker. Normaly this would be the main breaker for the kitchen appliance panel. Nice extra!!!!!$$$$$(unless someone missed it)Watch the compartment(in the sup panel) for it, they let it slide, but.. not a true junction box.

- Hazel Jensen (Thelma, ND), 03/25/2017