Black Short Profile 22mm Selector Switch, 3-Position Maintained

These are three-position selector switches with maintained action. This product is one of the shortest illuminated 22.5 mm switches on the market. The depth behind the panel is 48 mm (1.88"). By default, each SW21 switch comes with two NO blocks.

It allows you to keep either one of the two channels closed and one open, or keep both channels open.

Postion explanation (2 NO Blocks):
Selector Position 1: Keep Channel 1 closed and Channel 2 open.
Selector Position 2 (Center Position): Keep both channels open.
Selector Position 3: keep Channel 1 open and Channel 2 closed.

See the BK-SW15 of additional switch blocks. Whether the block is a NO or a NC block is printed on the side of its block. This can also be identified by looking at the bottom of the block. A green round dot indicates a NO block; a red round dot indicates a NC block. 

Specifications
Mounting Cutout: 7/8" in (22.5 mm) Diameter
Length Behind the Mounting Panel: 48 mm  (1.88")
Operation Current Rating: 10A at 120 VAC or 240 VAC
Mechanical Life: 1,000,000 Cycles
Number of Contact: 2 Normally Open
Switch Type: Maintained Action

Click here for Switch Selection Guide

The diagram shows the dimensions of SW21 selector switches (the unit is mm).