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FIIG:  T187-D

Entry Date:  Apr-01-1974

Concept:  

Status:  A

Applicability:  DF

Type:  0

Definition:  An electromagnetically actuated switch in which contacts are closed between horizontal and vertical banks of conducting bars. It may be designed to find and hold the specific circuit from which the starting signal has originated, to choose an idle circuit and connect the incoming signal to it, to connect the trunk lines from another switch to the desired called station and/or perform other selective switching functions. See also SWITCH, TELEPHONE, FINDER and SWITCH TELEPHONE, SELECTOR.

Basic INC:  70248

Basic Name:  SWITCH

Description:  1. A device which completes, interrupts, or changes the connections in one or more electrical circuit(s) by electrical, electronic, manual or mechanical actuation, or as a result of changes in ambient temperature. It includes items consisting of individually separable switches which are physically interlocked (e.g., one button returns when the other is pushed), which have a common actuator, or are electrically connected. Excludes: items which perform the same function by self-produced thermal action, such as relays, circuit breakers, fuses, or motor starters.