138-178

Technical Characteristics

• Style Designator

  circular wafer, bushing mount

• Shaft Length

  0.745 inches nominal single actuator

• Pole Quantity

  1 3rd section front

• Switch Actuator Indexing Position Quantity

  9 single actuator

• Pole Quantity

  2 8th section front

• Rotor Through Connection Quantity

  2 1st section

• Contact Switching Action

  makes before breaks 3rd section rear

• Err Default

  err default

• Rotor Through Connection Quantity

  2 2nd section

• Overall Length

  7.720 inches nominal

• Precious Material

  silver

• Contact Load Current Rating

  1.0 amperes resistive load ac at sea level

• Nominal Thread Size

  0.375 inches single mounting facility

• Pole Quantity

  2 1st section front

• Pole Quantity

  1 4th section front

• Shaft Type

  round, flatted single actuator

• Rotor Through Connection Quantity

  2 8th section

• Individual Section Quantity

  8

• Flat Height

  0.188 inches nominal single actuator

• Contact Switching Action

  breaks before makes 4th section rear

• Overall Width

  1.750 inches nominal

• Pole Quantity

  1 5th section front

• Mounting Method

  threaded bushing single mounting facility

• First Flat Length

  0.380 inches nominal single actuator

• Pole Quantity

  2 2nd section front

• Contact Switching Action

  breaks before makes 5th section rear

• Thread Class

  2a single mounting facility

• Pole Quantity

  1 6th section front

• Rotor Through Connection Quantity

  7 7th section

• Terminal Type

  tab, solder lug

• Rotor Through Connection Quantity

  1 3rd section

• Contact Switching Action

  breaks before makes 6th section rear

• Rotor Through Connection Quantity

  1 4th section

• Contact Voltage Rating In Volts

  110.0 ac at sea level

• Rotor Through Connection Quantity

  1 5th section

• Rotor Through Connection Quantity

  1 6th section

• Switch Contact Basic Design

  nonpile-up symmetrical

• Thread Series Designator

  unef single mounting facility

• Switch Actuator Stop Device Type

  adjustable stop single actuator

• Contact Switching Action

  makes before breaks 7th section rear

• Contact Voltage Rating In Volts

  28.0 dc at sea level

• Switch Actuator Positioning Increment

  20.0 degrees single actuator

• Contact Switching Action

  breaks before makes 1st section rear

• Contact Switching Action

  makes before breaks 8th section rear

• Contact Load Current Rating

  2.0 amperes resistive load dc at sea level

• Throw Quantity

  9 each section rear

• Shaft Diameter

  0.250 inches nominal single actuator

• Contact Switching Action

  breaks before makes 2nd section rear

• Overall Height

  2.312 inches nominal

• Precious Material And Location

  contacts and rotor blades silver

• Pole Quantity

  2 7th section front