Technical Articles

Electro-Mech's Backlit Potentiometer Switch Offers Dual Control Options in Single Unit Space

2/22/2002

February 22, 2002 -- Electro-Mech's new SW44175 backlit potentiometer switch offers  both rotary and push-on/push-off functionality plus backlighting for maximum operation control.  The compact all-in-one unit saves valuable panel space in applications where there are tight design limitations.    >

The SPDT switch enables the user to specify a value so that at the push of a button, the circuit or channel automatically opens at the preset level.  Featuring a backlit lens assembly and an alternate action pushbutton switch, the SW44175 utilizes four discrete LEDfs that backlight the translucent lens assembly and also allow custom interchangeable legends. Typical applications for the SW44175 switch include industrial/avionics displays and audio controls, instrument panel controls, and other high-density panels.

Lightweight, the compact unit weighs less than one ounce and measures less than one inch in diameter.  The SW44175 requires approximately three inches of space behind the display panel and mounts via a 7/8-inch diameter lockwasher and plastic slotted nut into a 7/8-inch diameter mounting hole.  Interconnection is provided via either wire leads or solder terminals.

The SW44175 is rated at 30 VDC or 120 VAC, 2a resistive, 0.5a inductive.   Potentiometer resistance is 5K+10% but can be customer specified.  Other features provided by the SW44175 include push-on/remain-in/push-off switching, an operating pressure of 32 oz. (+16 oz.), plunger travel of approximately 0.24h, and a rated switch life of 50,000 minimum actuations  Complete specifications upon request.  Custom configurations are also available.

SW44175_flyer.pdf