77-1949-1

Technical Characteristics

• Contact Voltage Rating In Volts

  115.0 ac at sea level

• Err Default

  err default and err default

• Style Designator

  tap, circular, bushing mount

• Nominal Thread Size

  0.375 inches single mounting facility

• Overall Diameter

  1.306 inches maximum

• Shaft Type

  round, flatted single actuator

• Overall Length

  2.090 inches nominal

• Contact Switching Action

  breaks before makes single section rear

• Shaft Flat/Slot Angular Location

  180.0 degrees from contact position 1 single actuator

• Switch Actuator Positioning Increment

  30.0 degrees single actuator

• Flat Height

  0.215 inches minimum single actuator and 0.223 inches maximum single actuator

• Switch Actuator Stop Device Type

  fixed stop single actuator

• Contact Load Current Rating

  2.0 amperes resistive load ac at sea level and 1.0 amperes inductive load ac at sea level

• Hazardous Locations/Environmental Protection

  explosion proof

• Contact Load Current Rating

  1.0 amperes inductive load dc at sea level

• Mounting Method

  threaded bushing single mounting facility

• Rotor Through Connection Quantity

  2 single section

• First Flat Length

  0.230 inches minimum single actuator and 0.270 inches maximum single actuator

• Pole Quantity

  2 single section front

• Switch Actuator Indexing Position Quantity

  4 single actuator

• Thread Class

  2a single mounting facility

• Nonturn Device Type

  tab at 3:00 o'clock

• Operating Temp Range

  -65.0/+85.0 deg celsius

• Terminal Type

  tab, solder lug

• Shaft Length

  0.940 inches minimum single actuator and 1.120 inches maximum single actuator

• Switch Contact Basic Design

  nonpile-up symmetrical

• Thread Series Designator

  unef single mounting facility

• Individual Section Quantity

  1

• Shaft Diameter

  0.248 inches minimum single actuator and 0.251 inches maximum single actuator

• Contact Voltage Rating In Volts

  28.0 dc at sea level

• Throw Quantity

  4 single section rear

• Nonturn Device Radius

  0.360 inches minimum at 3:00 o'clock and 0.390 inches maximum at 3:00 o'clock