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Part Numbers

Item Number Item Description
SM-A-587932-2 Circuit Breaker
AP14-1769-1 Circuit Breaker

Master Requirement Codes

Code Translation
CPRW Denotes the action imparted by actuator operation.
CPRX An indication of the designated position of the actuator.
ADAQ A measurement of the longest dimension of the body, in distinction from width.
AAQL The style designation indicating the configuration that most nearly corresponds to the appearance of the body.
ADAT A measurement taken at right angles to the length of the body, in distinction from thickness.
ABXD A measurement of the longest dimension of a bushing, in distinction from width.
ADTV The element, compound, or mixture of which the case is fabricated, excluding any surface treatment.
AEBP The center to center distance between terminals parallel to the length of the item.
AEBQ The center to center distance between terminals parallel to the width of the item.
CPRH Indicates the type of electrical condition that will cause the device to trip.
FREQ The cycles per second /hertz/ of the alternating current.
APNQ The means of quenching an arc.
CPLM The maximum current load that each pole is rated to carry continuously.
CPRG Indicates the type and value of the maximum short circuit current that the item will successfully interrupt, per pole, at the specified rated voltage, expressed in amperes.
AXHR Indicates the type and number of facilities by which the item is mounted.
CQJX A designation that is used for the purpose of general identification of the thread.
CPRF Indicates the type and value of operating voltage for which each pole is designed to operate, expressed in volts.
BBRG Indicates the type of storage space required for an item in order to provide the degree of protection necessary to maintain serviceability standards.
CQXF Indicates the type of protection for which the inclosure is designed.
CPSM The basic internal electrical configuration of the trip mechanism.
CPSM The basic internal electrical configuration of the trip mechanism.
CPRR Indicates the type of mechanism provided for tripping main contacts.
CPRT Indicates the type and number of actuators provided for manual control.
CPRQ The means provided to reposition the mechanism so that the device is ready to function.
AKPX The number of poles included in the item.
TTQY Indicates the type and number of terminals for providing electrical connection.
CMLP The number of threads on the item per linear inch measured on a line parallel to the thread axis.
THSD A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
CQWN The length of time, expressed in seconds, that an overload may exist before the device will trip at a specified continuous current.
CPRL Denotes the type of trip release action.
CPRJ The means by which the trip mechanism is released.
CPRN The continuous current rating per pole at which the device must trip in a specified time, expressed in percent.
PKWT The measured weight of an item unencumbered by packaging or packing material.

AP14-1769-1 Circuit Breaker

Cage 81541

Technical Definition

Circuit Breaker, also referenced with federal logistics item name code 00136 - A device with means other than fuses for automatically opening the circuit in which it is installed when the current varies from the predetermined value for which the device is set. may include provisions for manual operation. at least one set of contacts must be in series with the actuating element(s). a combination of semiconductor and passive devices may be used in lieu of contacts. for automatically operated items in which the actuating (tripping) element and contacts are not in series, see relay (as modified). for items which are operated both manually and automatically but the actuating elements and contact are not in series, see relay-switch. excludes circuit breaker box and magneto "breaker" assemblies. see also switch (as modified); and controller.

Technical Characteristics

Actuator Function (CPRW):
Actuator Position Designation (CPRX):
Between pole one and two
Body Length (ADAQ):
1.500 inches maximum
Body Style (AAQL):
Multipole-single actuator type
Body Width (ADAT):
1.250 inches maximum
Bushing Length (ABXD):
0.380 inches maximum
Case Material (ADTV):
Center To Center Distance Between Terminals Parallel To Length (AEBP):
0.875 inches nominal
Center To Center Distance Between Terminals Parallel To Width (AEBQ):
0.625 inches nominal
Circuit Protection Type (CPRH):
Overcurrent all locations
Frequency In Hertz (FREQ):
400.0 all locations
Arc Quenching Method (APNQ):
Magnetic blowout
Maximum Continuous Load Current Rating Per Pole (CPLM):
3.0 amperes ac all locations and 100.0 milliamperes dc all locations
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps (CPRG):
300.0 ac all locations and 500.0 dc all locations
Mounting Facility Type And Quantity (AXHR):
1 threaded bushing
Mounting Surface To Terminal End Distance (AJWX):
1.780 inches maximum
Nominal Thread Size (CQJX):
0.375 inches
Operating Voltage Type And Rating Per Pole In Volts (CPRF):
240.0 ac all locations and 50.0 dc all locations
Storage Type (BBRG):
General purpose warehouse
Inclosure Protection Type For Which Designed (CQXF):
Hermetically sealed
Internal Trip Release Configuration (CPSM):
Relay trip second location
Internal Trip Release Configuration (CPSM):
Series trip first location
Main Contact Tripping Mechanism Type (CPRR):
Trip free
Manual Actuator Type And Quantity (CPRT):
1 toggle
Reset Method (CPRQ):
Pole Quantity (AKPX):
Terminal Type And Quantity (TTQY):
4 wire hook
Thread Quantity Per Inch (CMLP):
Thread Series Designator (THSD):
Trip Delay Time In Seconds Per Rated Continuous Current (CQWN):
0.009 minimum at 150 pct all locations and 0.050 maximum at 150 pct all locations and 0.005 minimum at 200 pct all locations and 0.017 maximum at 200 pct all locations
Trip Release Characteristic (CPRL):
Instantaneous all locations and time delay all locations
Trip Release Method (CPRJ):
Magnetic-hydraulic all locations
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent (CPRN):
115.0 all locations
Unpackaged Unit Weight (PKWT):
2.100 ounces

National Stock Number (NSN)