60 amp double pole ac type nema 3r disconnect molded case switch 17 01 southwire 1 2 in.
Double pole disconnect switch.
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The other two terminals are often referred to as a and b.
Sp and dp refer to single pole and double pole st and dt refer to single throw and double throw.
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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.
One of the terminals is called the common terminal.
Sp switches control only one electrical circuit.
Eaton 30 amp 2 pole fusible general duty enclosed molded case switch disconnect.
A double throw switch connects an input terminal to one of two output terminals.
Siemens 60 amp 2 pole non fusible safety switch disconnect.
When the switch is in one position the common terminal is connected to the a terminal so current flows from the common terminal to the a terminal but no.
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Pole refers to the number of circuits controlled by the switch.
Dp switches control two independent circuits and act like two identical switches that are mechanically linked.
Eaton 60 amp double pole ac type nema 3r disconnect molded case switch model dpb222rp 17 01 17 01.
The interlock ensures both switches cannot be closed at the same time preventing them from being operated in parallel.
A double pole switch is usually a bit larger than a single pole one but that isn t just because it has to accommodate two poles instead of one.
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It s also because the wires feeding electricity to the switch are larger and this is due to the fact that double pole switches are usually used to control 240 volt circuits.
Thus a double pole switch has three terminals.