The 39-1 is a single-pole single-throw (SPST) pushbutton switch with a red button, normally open (NO) contact, solder lug terminations, and an ON function. It features a zinc trivalent chromate-plated brass housing, a thermoset plastic button and base, a gold-plated fine silver shorting bar, and terminals made from commercial bronze with gold-plated fine silver contact surfaces. The switch also includes tinned music wire springs. It has a maximum contact resistance of 25 milliohms when new, a minimum insulation resistance of 1000 megaohms, and operates within a temperature range of -40°C to 85°C. Suitable for industrial applications.
