Lockwood H-TBLOCK-A Terminal Block

A terminal is an electrical connector acting as the reusable interface to a conductor and creating a point where external circuits can be connected. A terminal may simply be the end of a wire or it may be fitted with a connector or fastener. Most electrical connectors have a plug that connects to a socket. The connection may be removable, require a tool for assembly and removal or serve as a permanent electrical joint between two points. An terminal adapter can be used to join dissimilar connectors. A screw terminal is a type of electrical connector where a wire is held by the tightening of a screw. The wire may be wrapped directly under the head of a screw, may be held by a metal plate forced against the wire by a screw or may be held by what is, in effect, a set screw in the side of a metal tube. The wire may be directly stripped of insulation and inserted under the head of a screw or into the terminal. Otherwise, it may be either inserted first into a ferrule, which is then inserted into the terminal or else attached to a connecting lug. which is then fixed under the screw head. The terminals easily can be reused in the field, allowing for the replacement of wires or equipment, generally with standard hand tools. Screw terminals usually avoid the requirement for a specialized mating connector to be applied to the ends of wires. Specifications. Height 1 in.. Width 4.5 in.. Length 2 in.