U28-5556

Technical Characteristics

• Style Designator

  circular wafer, bushing mount

• Nonturn Device Type

  tab at 10:00 o'clock

• Err Default

  err default

• Nonturn Device Radius

  0.531 inches nominal at 10:00 o'clock

• Nominal Thread Size

  0.375 inches single mounting facility

• Shaft Type

  round, flatted single actuator

• Mounting Method

  threaded bushing single mounting facility

• Overall Height

  1.938 inches nominal

• Switch Actuator Indexing Position Quantity

  4 single actuator

• Overall Length

  4.625 inches nominal

• Thread Class

  2a single mounting facility

• Shaft Length

  1.000 inches nominal single actuator

• Terminal Type

  tab, solder lug

• Contact Voltage Rating In Volts

  110.0 ac at sea level

• Switch Contact Basic Design

  nonpile-up symmetrical

• Thread Series Designator

  unef single mounting facility

• Overall Width

  1.625 inches nominal

• Flat Height

  0.187 inches nominal single actuator

• Contact Load Current Rating

  0.5 amperes resistive load ac at sea level

• First Flat Length

  0.375 inches nominal single actuator

• Contact Voltage Rating In Volts

  28.0 dc at sea level

• Contact Switching Action

  makes before breaks 1st section rear

• Switch Actuator Positioning Increment

  30.0 degrees single actuator

• Contact Load Current Rating

  1.0 amperes resistive load dc at sea level

• Special Features

  four dummy terminals on front of section one and eight dummy terminals on rear of section two

• Contact Switching Action

  makes before breaks 2nd section front

• Throw Quantity

  4 1st section rear

• Pole Quantity

  1 1st section rear

• Throw Quantity

  4 2nd section front

• Individual Section Quantity

  2

• Pole Quantity

  1 2nd section front

• Shaft Diameter

  0.250 inches nominal single actuator