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1/4 DIN Rotary 'Jab-In' Selector Switches for Thermocouple, RTD and Thermistor Circuits

Fits Standard 1/4 DIN Cutout
Gold or Silver Plated Contacts
2, 3, or 4 Poles
2 to 34 Positions
Round or Pistol Grip Handles
For isothermal, low resistance switching of temperature measurement circuits, OMEGA offers the SW14 1/4 DIN switches with gold or silver-plated contacts. Each style offers 2 to 40 positions in a break-resistant Noryl case. They are available with break before make and make before break contact action, in 2, 3 or 4 pole versions. They come with the standard round knob or optional pistol grip handle.
The isothermal design of these rotary switches minimises temperature gradients between the input and output thermocouple wiring. This in turn minimises errors in transmitting thermocouple signals due to the generation of a thermal emf at the wire junctions. The low resistance of the silver or gold plated contacts also enables switching of temperature sensitive resistance devices, such as RTDs and thermistors.
Dimensions
Bezel: 96 mm (3.78") sq, 1/4 DIN
Panel Depth: 63 mm (2-13/32"), 2-pole, 82 mm (3-5/32"), 3-pole, 101 mm (3-29/32"), 4-pole
Panel Cutout: 92 mm (3-5/8") dia.
Face Height: 28 mm (1-3/32"); 67 mm (2-5/8") with pistol grip

Available with Silver or Gold Plated Contacts

Pre-Configured Panel
OMEGA can supply pre-configured 19" panels with connectors, switch and meter installed for almost any application. Consult sales for details.

To Order (Specify Model Number) Prices Shown in Pounds
No. of Poles	No. of Positions	Silver-Plated Contacts		Gold-Plated Contacts
No. of Poles	No. of Positions	Model No.	Price	Model No.	Price
2	2 4 6 8 10 12 16 18 20 24 30 34	SW142-2-() SW142-4-() SW142-6-() SW142-8-() SW142-10-() SW142-12-() SW142-16-() SW142-18-() SW142-20-() SW142-24-() SW142-30-() SW142-34-()	£ 83 87 91 95 99 103 111 115 119 127 138 146	SW142G-2-() SW142G-4-() SW142G-6-() SW142G-8-() SW142G-10-() SW142G-12-() SW142G-16-() SW142G-18-() SW142G-20-() SW142G-24-() SW142G-30-() SW142G-34-()	£125 130 137 142 148 155 166 172 179 190 207 219
3	2 4 6 8 10 12 16 18 20 24 30 34	SW143-2-() SW143-4-() SW143-6-() SW143-8-() SW143-10-() SW143-12-() SW143-16-() SW143-18-() SW143-20-() SW143-24-() SW143-30-() SW143-34-()	85 91 98 103 109 115 127 133 138 147 165 176	SW143G-2-() SW143G-4-() SW143G-6-() SW143G-8-() SW143G-10-() SW143G-12-() SW143G-16-() SW143G-18-() SW143G-20-() SW143G-24-() SW143G-30-() SW143G-34-()	128 137 145 154 163 172 189 198 207 221 247 265
4	2 4 6 8 10 12 16 18 20 24 30 34	SW144-2-() SW144-4-() SW144-6-() SW144-8-() SW144-10-() SW144-12-() SW144-16-() SW144-18-() SW144-20-() SW144-24-() SW144-30-() SW144-34-()	94 98 108 114 120 127 140 146 153 162 181 195	SW144G-2-() SW144G-4-() SW144G-6-() SW144G-8-() SW144G-10-() SW144G-12-() SW144G-16-() SW144G-18-() SW144G-20-() SW144G-24-() SW144G-30-() SW144G-34-()	141 151 161 170 180 189 208 218 229 243 273 292
Specify contact action: 'B' = Break Before Make, 'M' = Make Before Break. Comes complete with mounting hardware, panel cutout template and instruction manual. To order with optional pistol grip handle add suffix '-PG' to model number and add £6 to price. Ordering Example:* SW142-10-M-PG specifies a 2-pole, 10-position switch with Make Before Break action, silver-plated contacts and optional pistol grip handle, £105. Ordering Example: SW143-12-B 3-pole, 12 position switch with Break Before Make action, silver-plated contacts, £115.

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Ordering Information
Free Phone: 0800 488 488
Telephone: 44 (1455) 285520