the orientation provided in fig1 a and 1b without significant changes to the operation thereof further the frame 100 and frame 101 may be integral without altering the nature of the invention thus design considerations such as cost may determine the orientation of the coil and whether there are two frames or a single frame a sensing switch 400 may be provided beneath the frame 101 controlled by a linkage not shown from the contact arm 70 the mechanical elements of the circuit breaker fit within a pair of housing halves to form a complete housing 20 in a preferred embodiment having a height which allows installation with a horizontal axis of movement for the external toggle 160 in an eia 310 d september 1992 expressly incorporated herein by reference 1u height cabinet the housing 20 is preferably less than about 1 75 inches in height and more preferably less than about 1 5 inches in height the housing 20 preferably has a pair of resilient arms 22 extending outward near the front surface which allow the housing 20 to be inserted through a front panel and retained in place alternately the housing 20 may be mounted using screws into threaded inserts not shown to an equipment faceplate the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof the present embodiments are therefore to be considered in all respects as illustrative and not restrictive the scope of the invention being indicated by the appended claims rather than by the foregoing description and all changes which come within the meaning and range of equivalency of.