SW-291

Technical Characteristics

• Style Designator

  circular wafer, bushing mount

• Thread Class

  2a 1st mounting facility

• Flat Height

  0.218 inches nominal single actuator

• Contact Switching Action

  makes before breaks 3rd section rear

• Overall Height

  1.312 inches nominal

• Mounting Method

  threaded bushing 1st mounting facility

• Err Default

  err default

• Mounting Facility Pattern

  two position in-line 2nd mounting facility

• Precious Material

  silver

• Throw Quantity

  10 8th section front

• Thread Class

  2a 2nd mounting facility

• Mounting Method

  threaded stud 2nd mounting facility

• Throw Quantity

  10 9th section front

• Shaft Type

  round, flatted single actuator

• Individual Section Quantity

  9

• Overall Length

  13.906 inches nominal

• Precious Material And Location

  contacts and rotor blade surfaces silver

• Contact Switching Action

  makes before breaks 5th section front

• Switch Actuator Indexing Position Quantity

  12 single actuator

• Thread Series Designator

  unc 2nd mounting facility

• Contact Switching Action

  makes before breaks 5th section rear

• Nonturn Device Type

  tab at 3:00 o'clock

• Shaft Length

  1.000 inches nominal single actuator

• Nonturn Device Radius

  0.531 inches nominal at 3:00 o'clock

• Terminal Type

  tab, solder lug

• Shaft Flat/Slot Angular Location

  90.0 degrees from nonturn device single actuator

• Contact Voltage Rating In Volts

  110.0 ac at sea level

• Overall Width

  1.250 inches nominal

• Contact Switching Action

  makes before breaks 7th section front

• Contact Switching Action

  breaks before makes 1st section front

• Nominal Thread Size

  0.375 inches 1st mounting facility

• Switch Actuator Stop Device Type

  adjustable stop single actuator

• Pole Quantity

  1 8th section front

• Longest Horizontal Distance Between Mounting Centers

  1.250 inches nominal 2nd mounting facility

• Throw Quantity

  10 1st section front

• First Flat Length

  0.375 inches nominal single actuator

• Contact Switching Action

  makes before breaks 7th section rear

• Contact Switching Action

  breaks before makes 8th section front

• Contact Voltage Rating In Volts

  28.0 dc at sea level

• Switch Contact Basic Design

  nonpile-up symmetrical and nonpile-up nonsymmetrical

• Thread Quantity Per Inch

  32 1st mounting facility

• Pole Quantity

  1 1st section front

• Nominal Thread Size

  0.112 inches 2nd mounting facility

• Pole Quantity

  1 9th section front

• Contact Switching Action

  breaks before makes 9th section front

• Switch Actuator Positioning Increment

  30.0 degrees single actuator

• Contact Load Current Rating

  1.0 amperes resistive load dc at sea level

• Shaft Diameter

  0.250 inches nominal single actuator

• Thread Series Designator

  unef 1st mounting facility

• Contact Load Current Rating

  500.0 milliamperes resistive load ac at sea level

• Thread Quantity Per Inch

  40 2nd mounting facility

• Contact Switching Action

  makes before breaks 3rd section front