121902MD

Technical Characteristics

• Thread Class

  2b

• Hazardous Locations/Environmental Protection

  dustproof

• Overall Height

  2.500 inches nominal

• Overall Width

  2.500 inches nominal

• First Flat Length

  0.750 inches nominal

• Shaft Length

  1.000 inches nominal

• Longest Vertical Distance Between Mounting Centers

  1.641 inches nominal

• Switch Contact Basic Design

  nonpile-up symmetrical

• Pole Quantity

  2

• Throw Quantity

  2

• Features Provided

  actuator knob

• Thread Quantity Per Inch

  24

• Mounting Facility Pattern

  four position rectangular

• Switch Actuator Indexing Position Quantity

  2

• Terminal Type

  tab w/screw

• Contact Switching Action

  breaks before makes

• Switch Actuator Stop Device Type

  fixed stop

• Special Features

  item must comply with requirements of desc production standard no. l02544;for navy nuclear propulsion plant products only

• Style Designator

  tap,circuit selector

• Thread Series Designator

  unc

• Overall Length

  3.031 inches nominal

• Flat Height

  0.219 inches nominal

• Shaft Diameter

  0.250 inches nominal

• Individual Section Quantity

  1

• Knob Manufacturer Code

  82121

• Knob Manufacturer Part Number

  a

• Longest Horizontal Distance Between Mounting Centers

  1.641 inches nominal

• Mounting Method

  threaded hole

• Nominal Thread Size

  0.190 inches

• Contact Voltage Rating In Volts

  125.0

• Shaft Type

  round,flatted,threaded hole

• Criticality Code Justification

  feat

• Switch Actuator Positioning Increment

  90.0 degrees

• Contact Load Current Rating

  10.0 amperes resistive load