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Datasheet. AM3-A39-A-40-252 specification
The style designation indicating the configuration that most nearly corresponds to the appearance of the body.
MULTIPOLE-Multiple actuator type
A measurement of the longest dimension of the body,in distinction from width.
2.490in. and 2.510in.
A measurement taken at right angles to the length of the body,in distinction from thickness.
2.240in. and 2.510in.
The element,compound,or mixture of which the case is fabricated,excluding any surface treatment.
plastic
The center to center distance between terminals parallel to the length of the item.
1.928in. and 1.948in.
The center to center distance between terminals parallel to the width of the item.
0.740in. and 0.760in.
The distance between centerlines of mounting facilities parallel to the length of the item.
2.052in. and 2.072in.
The distance between centerlines of mounting facilities parallel to the width of the item.
0.740in. and 0.760in.
The measure of sensitivity of the item to be packaged. a factor used by packaging engineers in devising proper cushioning in a package.
moderately rugged
The national stock number or the identification information of the end equipment for which the item is a part.
air route surveillance radar 1, FA7171 amplitron power supply cabinet; ARSR-2, FA7121 amplitron power supply cabinet
0.130in. and 0.150in.
2.461in. and 2.481in.
The number of poles included in the item.
3
The means of quenching an arc.
magnetic blowout
Indicates the type and number of facilities by which the item is mounted.
6 threaded stud
Indicates the type of storage space required for an item in order to provide the degree of protection necessary to maintain serviceability standards.
general purpose warehouse
The maximum current load that each pole is rated to carry continuously.
40.0 amperes ac all locations
Indicates the type and value of operating voltage for which each pole is designed to operate,expressed in volts.
250.0 ac all locations
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.
5000.0 ac all locations
Indicates the type of electrical condition that will cause the device to trip.
overcurrent all locations
The means by which the trip mechanism is released.
THERMAL-Magnetic all locations
Denotes the type of trip release action.
instantaneous all locations
The continuous current rating per pole at which the device must trip in a specified time,expressed in percent.
130.0 all locations
The ultimate time per pole in which the device must trip,expressed in seconds.
10.000 all locations
The means provided to reposition the mechanism so that the device is ready to function.
manual
Indicates the type of mechanism provided for tripping main contacts.
trip free
Indicates the type and number of actuators provided for manual control.
3 toggle
Denotes the action imparted by actuator operation.
TRIP-Reset
An indication of the designated position of the actuator.
at each pole
Indicates the arrangement of the externally connected actuators.
one, two, and three linked
A designation that is used for the purpose of general identification of the thread.
0.138in. ⁓9/64"
Indicates the type of protection for which the inclosure is designed.
dustproof
The temperature of the medium surrounding the trip release at which it can be operated continuously.
77.0 deg fahrenheit all locations
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
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
The cycles per second /hertz/ of the alternating current.
60.0 all locations
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unc
Indicates the type and number of terminals for providing electrical connection.
9 tab, solder lug or 6 threaded stud
Answers.
1EA
Unc
Schedule B number: 8536200040
Automatic circuit breakers, for a voltage not exceeding 1,000 v
FSC 5925 ⁓ Circuit breakers
Excluding relays.
NSN 5925-01-248-5793 CIRCUIT BREAKER
Used on air route surveillance radar 1, fa7171 amplitron power supply cabinet; arsr-2, fa7121 amplitron power supply cabinet. unc thread series 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
- NIIN
- 012485793
- NIIN Date
- 01/26/87
- Schedule B
- 8536200040
- Name Code
- 00136
- FIIG
- A030A0
- QUP
- 1
- Historical Price
- $393.68 EA
- DEMIL / ITAR
- USML/ITAR controlled item (Code: B)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- Metal content unknown
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
Other Part Numbers Parts with same form, fit, and function by other manufacturers
| 1. | AM3R-A39-LC07D-A52 | Cage 0UZ78 |
Major End Users Countries and entities
- - Federal Aviation Administration
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AM3-A39-A-40-252 / Circuit breakerWhat is the formal definition of this item?
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.
