AM3-A39-A-40-252

Technical Characteristics

• Trip Release Method

  thermal-magnetic all locations

• Body Width

  2.240 inches minimum and 2.510 inches maximum

• Ultimate Trip Time Per Pole In Seconds

  10.000 nominal all locations

• Trip Release Ambient Temp Rating

  77.0 deg fahrenheit nominal all locations

• Nominal Thread Size

  0.138 inches

• Center To Center Distance Between Terminals Parallel To Width

  0.740 inches minimum and 0.760 inches maximum

• Frequency In Hertz

  60.0 all locations

• Maximum Continuous Load Current Rating Per Pole

  40.0 amperes ac all locations

• Main Contact Tripping Mechanism Type

  trip free

• Arc Quenching Method

  magnetic blowout

• Distance Between Centerlines Of Mounting Facilities Parallel To Body Length

  2.052 inches minimum and 2.072 inches maximum

• Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps

  5000.0 ac all locations

• Distance Between Centerlines Of Mounting Facilities Parallel To Body Width

  0.740 inches minimum and 0.760 inches maximum

• Operating Voltage Type And Rating Per Pole In Volts

  250.0 ac all locations

• Mounting Facility Type And Quantity

  6 threaded stud

• Body Length

  2.490 inches minimum and 2.510 inches maximum

• Manual Actuator Type And Quantity

  3 toggle

• Boss Height

  0.130 inches minimum and 0.150 inches maximum

• Case Material

  plastic

• Reset Method

  manual

• Mounting Surface To Terminal End Distance

  2.461 inches minimum and 2.481 inches maximum

• Center To Center Distance Between Terminals Parallel To Length

  1.928 inches minimum and 1.948 inches maximum

• Storage Type

  general purpose warehouse

• Actuator Function

  trip-reset

• Special Features

  function: circuit breaker, magnetic, 40 amp; reference data: cb-4401, instruction book arsr-1d/e/f, vol 5, sec 10, pg 10-759; cb-4401, instruction book arsr-2, vol 5, sec 10, pg 10-563

• External Actuator Linkage Arrangement

  one, two, and three linked

• Terminal Type And Quantity

  9 tab, solder lug or 6 threaded stud

• End Item Identification

  air route surveillance radar 1, fa7171 amplitron power supply cabinet; arsr-2, fa7121 amplitron power supply cabinet

• Body Style

  multipole-multiple actuator type

• Fragility Factor

  moderately rugged

• Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent

  130.0 all locations

• Trip Release Characteristic

  instantaneous all locations

• Pole Quantity

  3

• Circuit Protection Type

  overcurrent all locations

• Inclosure Protection Type For Which Designed

  dustproof

• Thread Series Designator

  unc

• Actuator Position Designation

  at each pole