Secure Ordering: +1 (757) 528-8028

Worldwide distributor of NSN parts and consumables located in the USA.

Circuit Breaker

NSN: 5925-00-556-5666 | Model: 7974398
ITAR Registered seal

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 elem en (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
Yes - ITAR Controlled
Body Style
Single pole type
Overall Length
2.000 inches
Body Width
1.250 inches
Case Material
Center To Center Distance Between Terminals Parallel To Length
0.906 inches
Unthreaded Mounting Hole Diameter
0.190 inches
Distance Between Centerlines Of Mounting Facilities Parallel To Body Length
1.574 inches
Mounting Surface To Terminal End Distance
1.266 inches
Pole Quantity
Mounting Facility Type And Quantity
2 unthreaded hole
Storage Type
General purpose warehouse
Maximum Continuous Load Current Rating Per Pole
30.0 amperes dc single location
Operating Voltage Type And Rating Per Pole In Volts
30.0 dc single location
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
600.0 dc single location
Circuit Protection Type
Overcurrent single location
Trip Release Method
Thermal single location
Trip Release Characteristic
Time delay single location
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
125.0 single location
Reset Method
Actuator Function
Internal Trip Release Configuration
Series trip single location
Trip Delay Time In Seconds Per Rated Continuous Current
7.000 at 200 pct single location and 60.000 at 200 pct single location
Inclosure Protection Type For Which Designed
Trip Release Ambient Tempurature Rating
25.0 degrees celsius single location
Terminal Type And Quantity
2 screw
Recent Solicitations
Solicitation Return by Date Buyer Code Quantity
SPE7M520T2549 2019-11-25 PMCMU 182 EA
SPE7M519T264F 2019-04-01 PMCMU 180 EA
SPE7M519T128P 2019-02-19 PMCMU 180 EA
SPE7M519T1673 2018-10-29 PMCMV 26 EA
SPE7M518T048Q 2018-02-12 PMCMT 27 EA
SPE7M518T9937 2018-01-29 PMCMT 60 EA
SPE7M518T4092 2017-11-24 PMCMT 49 EA
SPE7M916T8726 2016-05-05 PMCMS 39 EA

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Email Address:
Phone Number:
Your name:
Privacy    Terms

Certified Quality Assurance  Quality check icon

  •   ISO 9001:2015 + AS9120B
  •   Counterfeit Parts Prevention
  •   100% Product Inspections
  •   7 Year Record Retention
  •   On Time Delivery
  •   HAZMAT Certified
  •   Worldwide Shipping

NSN 5925-00-556-5666 Datasheet

Supply Class (FSC):
Circuit Breakers
Cross Reference:
  • 7974398
  • PDA-30
  • 10011377
Cage Codes:
  • U S Army Tank Automotive Command (CAGE 19207)
  • Sensata Technologies, Inc (CAGE 82647)
  • U S Army Aviation and Missile (CAGE 18876)
  • 5925-00-556-5666 replaces 5925-00-503-5843
  • 5925-00-556-5666 replaces 5925-00-615-8837
  • 5925-00-556-5666 replaces 5925-00-708-8768
  • 5925-00-556-5666 replaces 5925-00-786-6371
Schedule B & Trade:
  • Schedule B: 8536200040 (NAICS 335313)

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

  • SITC: 77252

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

  • End Use: 20005

    Electric apparatus


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.


U - Precious metal content is unknown


- 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
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability
    This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $201.61 to $336.02..
Does NSN 5925-00-556-5666 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 Army, Department Of The Air Force, U.s. Marine Corps, Department Of The Navy, Austria, Spain, New Zealand, Portugal, Denmark, Greece, and Turkey
What is the NIIN of NSN 5925-00-556-5666?
005565666 or 00-556-5666
Does NSN 5925-00-556-5666 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5925-00-556-5666?
Solicitation SPE7M520T2549 for qty 182 on 11/14/2019
When was this national stock number assigned to the federal catalog?
Jan 01, 1963