Different types of circuit breakers and how to lock them out

Hi, Re single slot mcb the one shown by beachcomber is an MCB with arc detection there is a IC inside the unit to detect arcing So it requires

Make sure there is room for another double-pole breaker You need two horizontally adjacent slots Depending on the layout of the existing breakers, you may

two breakers in one slot There must be an open slot in your electrical panel to add an additional breaker Otherwise, you may need to upgrade your panel or add a second

two slot toaster Use one load center space with single-pole breakers and two spaces with 2-pole breakers Complete the project: use with Square D circuit breaker accessories