MS27789-21L

Technical Characteristics

• Test Data Document

  81349-mil-s-3950 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type

• ~1

  data on certain environmental and performance

• Actuator Diameter

  0.420 inches nominal

• Body Width

  1.340 inches maximum

• Thread Quantity Per Inch

  32

• Contact Load Current Rating At Maximum Rated Voltage

  4.000 amperes lamp ac and 7.500 amperes inductive ac and 7.500 amperes resistive dc and 7.500 amperes resistive ac and 7.500 amperes inductive dc and 7.000 amperes lamp dc

• Actuator Position-Locking Relationship

  up position locked in and down position locked in and center position locked in

• Specification/Standard Data

  96906-ms27789 government standard

• Nonpile-Up Contact Arrangement

  4 pole, double throw, three positions maintained single switch unit

• Body Length

  1.660 inches maximum

• Mounting Method

  threaded bushing

• Thread Series Designator

  uns

• Actuator Position-Action Relationship

  up position maintained and down position maintained and center position maintained

• Nominal Thread Size

  0.469 inches

• Thread Class

  2a

• Actuator Height

  1.050 inches nominal

• Bushing Length

  0.470 inches maximum

• Special Features

  locked out of down position (keying side)

• Body Style

  bushing mount

• End Item Identification

  master armament switch

• Actuator Style

  round

• Terminal Type And Quantity

  12 socket, integrated wire termination

• Maximum Voltage Rating In Volts

  115.0 ac and 28.0 dc

• Inclosure Type

  fully inclosed

• Mounting Surface To Terminal End Distance

  1.706 inches maximum