1-1957M7-3N

Technical Characteristics

• Shaft Diameter

  0.248 inches minimum and 0.251 inches maximum

• Shaft Length

  0.834 inches minimum and 0.914 inches maximum

• Overall Diameter

  1.100 inches minimum and 1.306 inches maximum

• Individual Section Quantity

  7

• Pole Quantity

  1

• Throw Quantity

  3

• Nominal Thread Size

  0.375 inches

• Shaft Flat/Slot Angular Location

  195.0 degrees from nonturn device

• Terminal Type

  tab,solder lug

• Switch Actuator Positioning Increment

  60.0 degrees

• Detent Rotational Torque Range

  p1.2/p4.5 inch-pounds (pound-inches)

• Switch Actuator Stop Device Type

  fixed stop

• Contact Load Current Rating

  2.0 amperes resistive load and 1.0 amperes inductive load

• Style Designator

  tap,circular,bushing mount

• Thread Class

  2a

• Thread Length

  0.417 inches minimum and 0.457 inches maximum

• Hazardous Locations/Environmental Protection

  explosion proof

• Overall Length

  3.687 inches minimum and 4.263 inches maximum

• First Flat Length

  0.230 inches minimum and 0.270 inches maximum

• Nonturn Device Radius

  0.360 inches minimum and 0.390 inches maximum

• Nonturn Device Type

  tab

• Operating Temp Range

  m65.0/p85.0 deg celsius

• Switch Contact Basic Design

  nonpile-up symmetrical

• Mounting Method

  threaded bushing

• Contact Voltage Rating In Volts

  115.0

• Contact Voltage Rating In Volts

  28.0

• Rotor Through Connection Quantity

  1

• Switch Actuator Indexing Position Quantity

  3

• Shaft Type

  round,flatted

• Contact Switching Action

  breaks before makes

• Contact Load Current Rating

  1.0 amperes inductive load

• Test Data Document

  81349-mil-s-3786 specification

• Thread Series Designator

  unef

• Flat Height

  0.215 inches minimum and 0.221 inches maximum