57-1907-1

Technical Characteristics

• Hazardous Locations/Environmental Protection

  explosion proof

• Mounting Method

  threaded bushing single mounting facility

• Switch Actuator Indexing Position Quantity

  12 single actuator

• Thread Class

  2a single mounting facility

• Overall Length

  4.559 inches maximum

• Terminal Type

  tab, solder lug

• Switch Contact Basic Design

  nonpile-up symmetrical

• Thread Series Designator

  unef single mounting facility

• Overall Diameter

  1.125 inches maximum

• Contact Load Current Rating

  2.0 amperes resistive load ac at sea level

• Shaft Diameter

  0.248 inches minimum single actuator and 0.251 inches maximum single actuator

• Rotor Through Connection Quantity

  1 each section

• Contact Voltage Rating In Volts

  28.0 dc at sea level

• Shaft Length

  0.897 inches minimum single actuator and 0.977 inches maximum single actuator

• Shaft Flat/Slot Angular Location

  180.0 degrees from contact position 1 single actuator

• Switch Actuator Positioning Increment

  30.0 degrees single actuator

• Pole Quantity

  1 each section front

• Nonturn Device Type

  slotted bushing at 3:00 o'clock

• Switch Actuator Stop Device Type

  fixed stop single actuator

• Operating Temp Range

  +0.0/+80.0 deg celsius

• Contact Voltage Rating In Volts

  115.0 ac at sea level

• Contact Switching Action

  breaks before makes each section rear

• Throw Quantity

  12 each section rear

• Err Default

  err default and err default

• First Flat Length

  0.250 inches nominal single actuator

• Special Features

  rf interference panel shielding incl

• Style Designator

  tap, circular, bushing mount

• Nominal Thread Size

  0.375 inches single mounting facility

• Contact Load Current Rating

  1.0 amperes resistive load dc at sea level and 500.0 milliamperes inductive load dc at sea level

• Flat Height

  0.214 inches nominal single actuator

• Shaft Type

  round, flatted single actuator

• Individual Section Quantity

  7

• ~1

  type data on certain environmental and performan

• Test Data Document

  81349-mil-s-3786/4 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