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Circuit Breaker

NSN: 5925-00-938-3447 | Model: ET7445

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 elemen (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.

NSN Properties and Flags
NATO Stock Number
5925-00-938-3447
DEMIL
NO
Body Style
Rectangular dimensional envelope
Overall Length
6.500 inches
Overall Height
4.125 inches
Overall Width
4.875 inches
Case Material
Plastic
Fragility Factor
Moderately rugged
Pole Quantity
3
Arc Quenching Method
Magnetic blowout
Mounting Facility Type And Quantity
4 threaded hole
Storage Type
General purpose warehouse
Features Provided
Adjustable trip release
Thready Qty Per Inch (tpi)
32
Maximum Continuous Load Current Rating Per Pole
100.0 amperes ac all locations and 100.0 amperes dc all locations
Operating Voltage Type And Rating Per Pole In Volts
500.0 ac all locations and 250.0 dc all locations
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
15000.0 ac all locations and 10000.0 dc all locations
Circuit Protection Type
Overcurrent all locations
Trip Release Method
Thermal-magnetic all locations
Trip Release Characteristic
Instantaneous all locations
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
125.0 all locations
Reset Method
Manual
Main Contact Tripping Mechanism Type
Trip free
Manual Actuator Type And Quantity
1 toggle
Actuator Function
Trip-reset
Actuator Position Designation
At pole two
Adjustable Trip Setting Current Range Per Pole In Amps
+600.0/+1300.0 ac all locations
Thread Size
0.190 inches
Inclosure Protection Type For Which Designed
Fungus resistant and moisture resistant and shock resistant
Trip Release Ambient Tempurature Rating
50.0 degrees celsius all locations
Special Features
Ent2732 is a factory installed shunt trip unit with auxiliary switch; rated voltage 120 vdc; rated current 100 amps
Frequency In Hertz
60.0 all locations
Precious Material And Location
Main contacts silver
Precious Material
Silver
Thread Series Designator
Unf
Terminal Type And Quantity
6 compression

Pricing and Availability

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NSN 5925-00-938-3447 Datasheet

Supply Class (FSC):
Circuit Breakers
Cross Reference:
  • ET7445
  • ETN2754ANDETN2732
  • ET74417ETN2732
  • ETN2732ET74417
Cage Codes:
  • Spd Electrical Systems, Inc (CAGE 30086)
Schedule B & Trade:
  • Schedule B: 8536200040 (NAICS 335313)

    Automatic circuit breakers, for a voltage not exceeding 1, 000 v, nesoi

  • SITC: 77252

    Automatic circuit breakers for a voltage not exceeding 1, 000 volts

  • End Use: 20005

    Electric apparatus

Identification:
HMIC

P - Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of federal standard 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

PMIC

S - Item contains silver.

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    061300 - Circuit breaker/switch noi

  • WCC:

    658 - Electrical appliances, small

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    H - Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps)

  • LTL:

    P - 77.5

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
    Sms
  • AAC
    Z
  • Quantity per pack
    1
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    U
  • MGMT_CTL
    9b-----
  • Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $3,815.79 to $6,359.65..
Does NSN 5925-00-938-3447 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Navy, Brazil, Spain, and Turkey
What is the NIIN of NSN 5925-00-938-3447?
009383447 or 00-938-3447
Does NSN 5925-00-938-3447 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5925-00-938-3447?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Mar 15, 1967