A:  Yes, it will trip still with it locked in on position. But will need to be removed to reset the breaker if it ever trips! I put these on my breakers at my vacation home, so no one turns off the refrigerator, Freezer, or outlets I want to stay on.

A:  This is fo locking out a breaker in the off position only and will not work correctly to keep a breaker on. It is intended to prevent someone from unintentionally turning on a circuit. Industrial versions have a lock attachment point. To protect an on breaker look for a cover for a switch that allows the breaker to operate and tape it on or just place some tape over the breaker as long as it does not impede it's trip function.

A:  I would say no. All this device does is keep someone from turning a breaker off by accident. It will still trip as normal. I use it at my vacation home to prevent one of my kids whom visit without me, from turning off the refrigerator and freezer when we turn off at the breakers, all non essential electric breaker when we are not there for months on end. I hope this helps!

A:  Technically not. But if you paint it red it will.

A:  No. This needs to fit over the top of the breaker switch. A double switch will have a bar connecting the two switches and this will not fit.

A:  Doutful. They are designed to fir over the single throw switch so without modifications to clear the tie bar ( which would weaken it at a minimum) they will not fit. Remember they are mostly to prevent accidentally turning off a certain breaker rather than make it tamper proof as a screw driver removes it.

A:  No

A:  Well, that depends on the breaker switches themselves. This is made to fit around a single pole breaker, If the two are together. No!

A:  Double pole? Nope. It fits single.

A:  Not likely! It is made for a single pole only!

A:  Only if you install on both breaker arms. Used on one arm only will still allow the other side to move.

A:  Would require two in order to terminate the double arms from being turned off. This device is for stopping a breaker from being turned off. Usage with fire alarm systems. Is not a power lockout device.

A:  It may so Long as there I no interference with the bar that joins the switch. If it does interfere you may need to file a notch to fit over the bar. Note: this is a very low end security device intended to limit accidentally opening/ closing a breaker. As it is installed/ removed with a screwdriver (or pry) it is easily removed by anyone wtih I'll intent. The locking style is a bit more secure as it prevents removal of the mounting screw