PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-PRF-55629/1DCircuit Breaker

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5925-01-265-7723 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-01-265-7723 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-265-7723. Primary manufacturer part number: MIL-PRF-55629/1D.
Features
  • Circuit Breaker — FSC 5925
  • Body Style: SINGLE POLE TYPE
  • Mounting Facility Type and Quantity: 2 THREADED HOLE(S)
  • Storage Type: GENERAL PURPOSE WAREHOUSE
  • Special Handling Feature: MAGNETIC
  • Thread Quantity Per Inch: 32
  • Fragility Factor: MODERATELY RUGGED
  • Arc Quenching Method: MAGNETIC BLOWOUT
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-01-265-7723, is classified within Federal Supply Class 5925 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5925-01-265-7723
Primary Part NumberMIL-PRF-55629/1D
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Body StyleSINGLE POLE TYPE
Mounting Facility Type and Quantity2 THREADED HOLE(S)
Storage TypeGENERAL PURPOSE WAREHOUSE
Special Handling FeatureMAGNETIC
Thread Quantity Per Inch32
Fragility FactorMODERATELY RUGGED
Arc Quenching MethodMAGNETIC BLOWOUT
Center to Center Distance Between Terminals Parallel to Length1.660 INCHES MINIMUM AND 1.960 INCHES MAXIMUM IN
Pole Quantity1
Distance Between Centerlines of Mounting Facilities Parallel to Body Length2.046 INCHES MINIMUM AND 2.078 INCHES MAXIMUM IN
Mounting Surface to Terminal End Distance2.553 INCHES MAXIMUM IN
Boss Height0.109 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
Reset MethodMANUAL
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent150.0 SINGLE LOCATION
Trip Release MethodMAGNETIC SINGLE LOCATION
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialPLASTIC CASE
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps1000.0 AC SINGLE LOCATION
Test Data Document81349-MIL-C-55629 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Operating Voltage Type and Rating Per Pole in Volts240.0 AC SINGLE LOCATION
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Trip Delay Time in Seconds Per Rated Continuous Current9.500 MINIMUM AT 200 PCT AND 150.000 MAXIMUM AT 200 PCT SINGLE LOCATION
Inclosure Protection Type for Which DesignedMOISTURE RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT
Terminal Type and Quantity2 THREADED STUD
Actuator FunctionTRIP-RESET
Frequency in Hertz400.0 SINGLE LOCATION
Manual Actuator Type and Quantity1 TOGGLE
Specification/standard Data81349-MIL-C-55629/1 GOVERNMENT SPECIFICATION
Maximum Continuous Load Current Rating Per Pole40.0 AMPERES AC SINGLE LOCATION
Internal Trip Release ConfigurationSERIES TRIP SINGLE LOCATION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5925-00-163-6982 INTERCHANGEABLE
Circuit Breaker
5925-00-487-6532 INTERCHANGEABLE
Circuit Breaker
5925-00-566-4169 INTERCHANGEABLE
Circuit Breaker
5925-00-583-8922 INTERCHANGEABLE
Circuit Breaker
5925-01-005-9799 INTERCHANGEABLE
Circuit Breaker
5925-01-019-9426IELK1-1-62-6.00-01-V INTERCHANGEABLE
Circuit Breaker
Sensata Technologies, Inc. Div Sensata Attleboro
5925-01-075-3802 INTERCHANGEABLE
Circuit Breaker
5925-01-097-6892 INTERCHANGEABLE
Circuit Breaker
5925-01-265-7733 INTERCHANGEABLE
Circuit Breaker
5925-01-274-1284 INTERCHANGEABLE
Circuit Breaker
Cross-Reference Index
Part NumberManufacturer
MIL-PRF-55629/1D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M55629/1-248 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-55629/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-55629/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5925-00-163-6982INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-487-6532INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-566-4169INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-583-8922INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-005-9799INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-019-9426INTERCHANGEABLE
CIRCUIT BREAKER
IELK1-1-62-6.00-01-V
5925-01-075-3802INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-097-6892INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-265-7733INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-274-1284INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-332-5631INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-354-9726INTERCHANGEABLE
CIRCUIT BREAKER

Frequently Asked Questions

What is NSN 5925-01-265-7723?

NSN 5925-01-265-7723 is a Circuit Breaker, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5925 (No Item Name Available). Status: active.

What are the part numbers for NSN 5925-01-265-7723?

NSN 5925-01-265-7723 has 4 cross-referenced part numbers: MIL-PRF-55629/1D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M55629/1-248 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-55629/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-55629/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5925-01-265-7723?

There are 12 known substitutes for 5925-01-265-7723: 5925-00-163-6982, 5925-00-487-6532, 5925-00-566-4169 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-PRF-55629/1D?

Key specifications for MIL-PRF-55629/1D: Body Style: SINGLE POLE TYPE; Mounting Facility Type and Quantity: 2 THREADED HOLE(S); Storage Type: GENERAL PURPOSE WAREHOUSE; Special Handling Feature: MAGNETIC. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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