B3221-12

Technical Characteristics

• Contact Load Current Rating

  700.0 milliamperes resistive load dc at sea level

• Contact Load Current Rating

  750.0 milliamperes resistive load ac at sea level

• Precious Material And Location

  contacts silver

• Err Default

  err default

• Contact Switching Action

  breaks before makes single section front

• Precious Material

  silver

• Style Designator

  tap, circular, bushing mount

• Nominal Thread Size

  0.375 inches single mounting facility

• First Flat Length

  0.015 inches minimum single actuator and 0.047 inches maximum single actuator

• Mounting Method

  threaded bushing single mounting facility

• Thread Class

  2a single mounting facility

• Shaft Length

  0.359 inches minimum single actuator and 0.391 inches maximum single actuator

• Terminal Type

  tab, solder lug

• Pole Quantity

  4 single section front

• Switch Contact Basic Design

  nonpile-up symmetrical

• Thread Series Designator

  unef single mounting facility

• Individual Section Quantity

  1

• Overall Diameter

  1.234 inches minimum and 1.266 inches maximum

• Throw Quantity

  3 single section front

• Contact Voltage Rating In Volts

  300.0 ac at sea level

• Overall Length

  1.561 inches minimum and 1.625 inches maximum

• Shaft Type

  round, nonparallel flatted single actuator

• Contact Voltage Rating In Volts

  300.0 dc at sea level

• Switch Actuator Indexing Position Quantity

  3 single actuator

• Switch Actuator Stop Device Type

  fixed stop single actuator

• Switch Actuator Positioning Increment

  90.0 degrees single actuator

• Shaft Diameter

  0.247 inches minimum single actuator and 0.251 inches maximum single actuator