OSW3-10 OMEGA Rotary Selector Switch

The OMEGA SW14 1/4 DIN and OSW Series Rotary Selector Switches are designed to provide isothermal, low-resistance switching in your temperature measuring circuits. The isothermal design minimizes temperature gradients between the input and the output thermocouple wiring to avoid the generation of thermal EMF's that add error to your thermocouple temperature measuring circuits. Temperature-sensitive resistance transducers such as RTD's and thermistors can be switched with confidence, knowing that the low contact resistance will not add any appreciable error to the measurement.

The SW14 models are 1/4 DIN size and are manufactured with 2 to 34 positions in two, three or four-pole versions. The OSW two-pole switches are manufactured in either 3 in. or 5 in. diameter housing, depending on the number of positions. All of the three-pole versions have a 5 in. diameter housing. Two to 40 positions, in addition to OFF, are manufactured in a designer style unbreakable Noryl case. (Note that the 3-pole version has no OFF position).

The SW14 selector switch can be mounted into an existing 1/4 DIN panel cutout.

To allow matching of a readout device in all switch positions, the "off" position of each switch may be shorted or left as an open circuit. Each pole is fully isolated. For quick and easy wiring, the terminals located at the rear of the switch are clearly marked. All switches are available with the standard round knob, or a pistol-grip handle, and gold or silver plated contacts.