18-1931

Technical Characteristics

• Thread Length

  0.440 inches nominal single mounting facility

• First Flat Length

  0.250 inches nominal single actuator

• Nonturn Device Radius

  0.432 inches nominal at 3:00 o'clock

• Throw Quantity

  10 each section front

• Mounting Method

  threaded bushing single mounting facility

• Nominal Thread Size

  0.375 inches single mounting facility

• Contact Switching Action

  breaks before makes 1st section front

• Contact Switching Action

  breaks before makes 2nd section front

• Contact Switching Action

  breaks before makes 5th section front

• Contact Switching Action

  breaks before makes 7th section front

• Contact Switching Action

  breaks before makes 8th section front

• Contact Switching Action

  breaks before makes 9th section front

• Contact Switching Action

  makes before breaks 12th section front

• Switch Actuator Positioning Increment

  36.0 degrees single actuator

• Contact Load Current Rating

  3.0 amperes resistive load and 2.0 amperes inductive load dc at sea level

• Thread Series Designator

  unef single mounting facility

• Thread Class

  2a single mounting facility

• Hazardous Locations/Environmental Protection

  explosion proof

• Overall Length

  5.930 inches nominal

• Flat Height

  0.210 inches nominal single actuator

• Shaft Diameter

  0.250 inches nominal single actuator

• Shaft Length

  0.380 inches nominal single actuator

• Individual Section Quantity

  12

• Nonturn Device Type

  tab at 3:00 o'clock

• Switch Contact Basic Design

  nonpile-up symmetrical

• Pole Quantity

  1 each section front

• Features Provided

  metallic inclosure

• Contact Voltage Rating In Volts

  115.0

• Contact Voltage Rating In Volts

  28.0

• Switch Actuator Indexing Position Quantity

  10 single actuator

• Shaft Type

  round, flatted single actuator

• Terminal Type

  tab, solder lug

• Contact Switching Action

  breaks before makes 10th section front

• Contact Switching Action

  breaks before makes 11th section front

• Contact Switching Action

  breaks before makes 3rd section front

• Contact Switching Action

  breaks before makes 4th section front

• Contact Switching Action

  breaks before makes 6th section front

• Style Designator

  9 tap, circular, bushing mount