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Datasheet. CB-20A specification
The style designation indicating the configuration that most nearly corresponds to the appearance of the body.
single pole type
An overall measurement taken at right angles to the length of an item,in distinction from thickness.
0.790in.
A measurement of the longest dimension of the body,in distinction from width.
1.240in.
A measurement taken at right angles to the length of the body,in distinction from thickness.
0.790in.
A measurement from the bottom to the top of the body,in distinction from depth.
0.640in.
The element,compound,or mixture of which the case is fabricated,excluding any surface treatment.
metal
The center to center distance between terminals parallel to the length of the item.
0.690in.
The length of a straight line which passes through the center of an unthreaded mounting hole,and terminates at the circumference.
0.196in.
The distance between centerlines of mounting facilities parallel to the length of the item.
1.560in.
0.560in.
1.250in.
The number of poles included in the item.
1
Indicates the type and number of facilities by which the item is mounted.
2 unthreaded hole
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
32
The maximum current load that each pole is rated to carry continuously.
20.0 amperes dc all locations
Indicates the type and value of operating voltage for which each pole is designed to operate,expressed in volts.
14.0 dc all locations and 28.0 dc 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.
1.5 dc 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 all locations
Denotes the type of trip release action.
time delay all locations
The means provided to reposition the mechanism so that the device is ready to function.
automatic
The basic internal electrical configuration of the trip mechanism.
series trip all locations
A designation that is used for the purpose of general identification of the thread.
0.190in. ⁓13/64"
The working period which the trip release is designed to operate.
continuous all locations
The temperature of the medium surrounding the trip release at which it can be operated continuously.
-40.0 deg fahrenheit all locations and 185.0 deg fahrenheit all locations
The name assigned to the item by the government agency or commercial organization controlling the design of the item.
series 12x shortstop circuit breaker, 20amp dc
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unf
Answers.
Unf
32
0.790 inches
Schedule B number: 8536200040
Automatic circuit breakers, for a voltage not exceeding 1,000 v
FSC 5925 ⁓ Circuit breakers
Excluding relays.
NSN 5925-01-600-7960 CIRCUIT BREAKER
unf thread series series 12x shortstop circuit breaker, 20amp dc 32 thread quantity per inch 0.790" overall width
- NIIN
- 016007960
- NIIN Date
- 12/19/11
- Schedule B
- 8536200040
- Name Code
- 00136
- FIIG
- A030A0
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- No precious metals
- 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. | 121B20-B2M | Cage 1JY78 |
| 2. | 121B20-B2M | Cage 11873 |
Major End Users Countries and entities
- - Australia
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CB-20A / 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.
