Break Circuit
To break a circuit loop graphic without uncircuiting the devices connected by the loop, go to
Ribbon: 
Break Circuit
Pulldown Menu:
You will be prompted to identify the first break point on the loop to be broken. Select the loop at the point where the break should begin.
Select circuit to break at first break point:
You will then be prompted to select on the loop where the break should end.
Select second break point:
The loop will be broken at the two selected points. The broken loops will be grouped with the device they are connected to.
To remove the pieces of the broken loop without deleting the devices, use the Erase Part of Device command.
Circuit break block: Sets the block used for the break in the circuit.