Double Throw Safety Switch Diagram. Also known as safety switches they have spring driven quick make quick break action to eliminate arcing and prolong switch life. All are ul listed. The interlock ensures both switches cannot be closed at the same time preventing them from being operated in parallel.
The interlock ensures both switches cannot be closed at the same time preventing them from being operated in parallel. Double throw switches are intended to transfer loads from one power source to another.
The other two terminals are often referred to as a and b.
Eaton s double throw safety switches include two interlocked switches with a common connection used to transfer service from a normal power source to an alternate source or to switch from one load circuit to another. Single pole throw and double pole throw switches are by far the most common switches but triple and quadruple configurations are also available. Thus a double pole switch has three terminals. Each of the terminals of a double pole double switch can either be in 1 of 2 positions.
