mate with a full perforation 177 or a partial perforation 175 disposed in the frame 150 the swivel plate 170 has an opening 172 that is adapted to receive the protruding handle 107 of the breaker 105 when it is in an open or u201c off u201d position the swivel plate also has a chamfered edge 176 that is adapted to provide clearance for a break or bend 178 of the frame 150 the bend 178 is adapted to provide increased mechanical strength to the shelf 179 in reference to fig1 2 and 3 the operation of the lock out device 110 will now be described when the protruding handle 107 of the breaker 105 is in an u201c off u201d or open position 210 a swivel plate 170 and its respective opening 172 will allow the swivel plate 170 to be pivoted to engage and secure the handle 107 thereby holding the handle 107 and preventing movement of the handle 107 to position 220 to prevent movement of the swivel plate 170 a restriction member is inserted into one of the perforations 180 adjacent the swivel plate 170 in one embodiment the restriction member is a shackle 190 of a locking device 160 the shackle 190 is placed into one of the perforations 180 formed through the shelf 179 thereby preventing pivoting of the swivel plate 170 away from the handle 107 once the padlock 160 is in a locked position service personnel can be assured that the breaker 105 will remain in an open position 210 until the padlock 160 is removed and maintenance may commence in another embodiment the restriction member may be a lockout hasp that is known in the art in another embodiment the restriction member is a cable from a locking.