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- DPST (Double Pole Single Throw) Switch Configuration:Double pole means two independent circuits are actuated by the button. Single throw means each circuit only has two terminals and only operates as an on/off switch.
- Dry Circuit:Low power level or Logic circuit. Power levels do not cause arcing, melting or softening of contacts. Typically requires gold plated contacts for reliable switch operation. At such low levels, and since no arc occurs, silver contacts would not be self-cleaned and would be less reliable.
- Dusttight:Sealed switch that will withstand sand and dust environments per MIL-PRF-8805 Design 2.
- DWV (Dielectric Withstanding Voltage):The maximum voltage that can be applied to an insulator or switch before it will break down and begin to conduct electricity.