21758

21758 Circuit Breaker
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Datasheet. 21758 specification

Body Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the body.

MULTIPOLE-Multiple actuator type

Body Length
A measurement of the longest dimension of the body,in distinction from width.

2.490in.

Body Width
A measurement taken at right angles to the length of the body,in distinction from thickness.

2.250in.

Case Material
The element,compound,or mixture of which the case is fabricated,excluding any surface treatment.

plastic

Center To Center Distance Between Terminals Parallel To Length
The center to center distance between terminals parallel to the length of the item.

1.940in.

Center To Center Distance Between Terminals Parallel To Width
The center to center distance between terminals parallel to the width of the item.

0.750in.

Distance Between Centerlines Of Mounting Facilities Parallel To Body Length
The distance between centerlines of mounting facilities parallel to the length of the item.

2.060in.

Distance Between Centerlines Of Mounting Facilities Parallel To Body Width
The distance between centerlines of mounting facilities parallel to the width of the item.

0.750in.

Fragility Factor
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

Boss Height

0.150in.

Mounting Surface To Terminal End Distance

2.475in.

Pole Quantity
The number of poles included in the item.

3

Arc Quenching Method
The means of quenching an arc.

magnetic blowout

Mounting Facility Type And Quantity
Indicates the type and number of facilities by which the item is mounted.

6 threaded hole

Storage Type
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

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

32

Maximum Continuous Load Current Rating Per Pole
The maximum current load that each pole is rated to carry continuously.

20.0 amperes ac all locations

Operating Voltage Type And Rating Per Pole In Volts
Indicates the type and value of operating voltage for which each pole is designed to operate,expressed in volts.

480.0 ac all locations

Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
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

Circuit Protection Type
Indicates the type of electrical condition that will cause the device to trip.

overcurrent all locations

Trip Release Method
The means by which the trip mechanism is released.

MAGNETIC-Hydraulic all locations

Trip Release Characteristic
Denotes the type of trip release action.

time delay all locations

Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
The continuous current rating per pole at which the device must trip in a specified time,expressed in percent.

125.0 all locations

Reset Method
The means provided to reposition the mechanism so that the device is ready to function.

manual

Main Contact Tripping Mechanism Type
Indicates the type of mechanism provided for tripping main contacts.

trip free

Manual Actuator Type And Quantity
Indicates the type and number of actuators provided for manual control.

3 toggle

Actuator Function
Denotes the action imparted by actuator operation.

TRIP-Reset

Actuator Position Designation
An indication of the designated position of the actuator.

at each pole

External Actuator Linkage Arrangement
Indicates the arrangement of the externally connected actuators.

one, two, and three linked

Internal Trip Release Configuration
The basic internal electrical configuration of the trip mechanism.

series trip all locations

Nominal Thread Size
A designation that is used for the purpose of general identification of the thread.

0.138in. ⁓9/64"

Trip Delay Time In Seconds Per Rated Continuous Current
The length of time,expressed in seconds,that an overload may exist before the device will trip at a specified continuous current.

0.150 at 200 pct all locations and 1.500 at 200 pct all locations

Inclosure Protection Type For Which Designed
Indicates the type of protection for which the inclosure is designed.

fungus resistant and moisture resistant

Frequency In Hertz
The cycles per second /hertz/ of the alternating current.

50.0 all locations or 60.0 all locations

Unpackaged Unit Weight
The measured weight of an item unencumbered by packaging or packing material.

14.000 ounces

Thread Series Designator
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

Terminal Type And Quantity
Indicates the type and number of terminals for providing electrical connection.

6 threaded stud

Answers.

What class is the thread series?

Unc

What is the thread quantity per inch?

32

What is the NSN for 21758?

5925-01-240-4046

How is this classified for shipping?

Schedule B number: 8536200040
Automatic circuit breakers, for a voltage not exceeding 1,000 v

What's the federal classification of 21758?

FSC 5925 ⁓ Circuit breakers

Excluding relays.

NSN 5925-01-240-4046 CIRCUIT BREAKER

unc thread series 32 thread quantity per inch

NIIN
012404046
NIIN Date
09/13/86
Schedule B
8536200040 
Name Code
00136
FIIG
A030A0
Item Weight
0.000lbs
Item Dimensions
--
DEMIL / ITAR
Uncontrolled item (Code A)
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. 205-111-1-66-5-203-O Cage 81541

Major End Users Countries and entities

  • - New Zealand 

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Similar by Design Other circuit breakers with similar characteristics

Nothing similar to this part number was found in our inventory

21758 / 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.