Abstract: A blade position detector and rollover indicator is operatively attached to an elongated movable switch-blade assembly of a horizontally mounted high voltage vertical break disconnect switch. The blade position detector and rollover indicator is gravity responsive and attached in predetermined position to the elongated disconnect blade assembly that reacts when the proper angle of closure of the blade is obtained in an intermediated closed switch position and finally when the proper angle of blade rollover is obtained in a fully closed switch position to provide a visual indication of full closure of the disconnect switch.

Abstract: Rapid arc extinguishing devices for air break switches have a whip with at least an end portion of nonmetallic material such as fiber reinforced plastic with a conductive path on its surface. The nonmetallic material is a single tapered rod or an assembly of a plurality of rods successively inserted into an outer rod. The conductive path on the whip is of various individual and combination forms of which some include a metal braid, foil, sheath or wound wire. Particular forms of the conductive path on the rod have enhanced durability and arc resistance at the areas of the whip most likely to be subject to arcing with a latch of the device upon switch opening or closing. Further forms of the whip are a combination in which an end portion as described is attached to an all metal base portion that is arranged to include a portion of the whip subject to arcing on switch closing. Another form of device has a latch engaging a whip at a rotating wheel on the latch.

Abstract: Rapid arc extinguishing devices for air break switches have a whip with at least an end portion of nonmetallic material such as fiber reinforced plastic with a conductive path on its surface. The nonmetallic material is a single tapered rod or an assembly of a plurality of rods successively inserted into an outer rod. The conductive path on the whip is of various individual and combination forms of which some include a metal braid, foil, sheath or wound wire. Particular forms of the conductive path on the rod have enhanced durability and arc resistance at the areas of the whip most likely to be subject to arcing with a latch of the device upon switch opening or closing. Further forms of the whip are a combination in which an end portion as described is attached to an all metal base portion that is arranged to include a portion of the whip subject to arcing on switch closing. Another form of device has a latch engaging a whip at a rotating wheel on the latch.