1-1909M1-4N

Technical Characteristics

• Thread Class

  2a single mounting facility

• First Flat Length

  0.240 inches minimum and 0.260 inches maximum single actuator

• Nonturn Device Radius

  0.432 inches nominal at 3:00 o'clock

• Nonturn Device Type

  tab at 3:00 o'clock

• Operating Temp Range

  -55.0/+125.0 deg celsius

• Switch Contact Basic Design

  nonpile-up symmetrical

• Pole Quantity

  2 single section front

• Mounting Method

  threaded bushing single mounting facility

• Rotor Through Connection Quantity

  2 single section

• Switch Actuator Indexing Position Quantity

  4 single actuator

• Terminal Type

  tab, solder lug

• Contact Switching Action

  breaks before makes single section rear

• Switch Actuator Stop Device Type

  fixed stop single actuator

• Contact Load Current Rating

  0.5 amperes resistive load and 0.2 amperes inductive load dc at sea level

• Contact Load Current Rating

  1.0 amperes resistive load ac at sea level

• Style Designator

  9 tap, circular, bushing mount

• Thread Length

  0.410 inches minimum and 0.450 inches maximum single mounting facility

• Hazardous Locations/Environmental Protection

  explosion proof

• Overall Length

  1.710 inches minimum and 1.810 inches maximum

• Flat Height

  0.205 inches minimum and 0.215 inches maximum single actuator

• Shaft Diameter

  0.248 inches minimum and 0.252 inches maximum single actuator

• Shaft Length

  0.760 inches minimum and 0.840 inches maximum single actuator

• Overall Diameter

  1.180 inches minimum and 1.200 inches maximum

• Individual Section Quantity

  1

• Throw Quantity

  4 single section rear

• Nominal Thread Size

  0.375 inches single mounting facility

• Contact Voltage Rating In Volts

  115.0

• Contact Voltage Rating In Volts

  28.0

• Shaft Flat/Slot Angular Location

  210.0 degrees from nonturn device single actuator

• Shaft Type

  round, flatted single actuator

• Switch Actuator Positioning Increment

  30.0 degrees single actuator

• Thread Series Designator

  unef single mounting facility