PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M55629/1-240Circuit Breaker

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5925-01-097-6892 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-01-097-6892 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-097-6892. Primary manufacturer part number: M55629/1-240.
Features
  • Circuit Breaker — FSC 5925
  • Trip Delay Time in Seconds Per Rated Continuous Current: 0.600 MINIMUM AT 200 PCT AND 8.000 MAXIMUM AT 200 PCT SINGLE LOCATION
  • Manual Actuator Type and Quantity: 1 TOGGLE
  • Inclosure Protection Type for Which Designed: MOISTURE RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT
  • Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps: 2000.0 DC SINGLE LOCATION
  • Main Contact Tripping Mechanism Type: TRIP FREE
  • Actuator Position Designation: AT POLE ONE
  • Trip Release Characteristic: TIME DELAY SINGLE LOCATION
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-01-097-6892, 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 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5925-01-097-6892
Primary Part NumberM55629/1-240
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
StatusCANCELLED
Trip Delay Time in Seconds Per Rated Continuous Current0.600 MINIMUM AT 200 PCT AND 8.000 MAXIMUM AT 200 PCT SINGLE LOCATION
Manual Actuator Type and Quantity1 TOGGLE
Inclosure Protection Type for Which DesignedMOISTURE RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps2000.0 DC SINGLE LOCATION
Main Contact Tripping Mechanism TypeTRIP FREE
Actuator Position DesignationAT POLE ONE
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Trip Release MethodMAGNETIC SINGLE LOCATION
Operating Voltage Type and Rating Per Pole in Volts50.0 DC SINGLE LOCATION
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Terminal Type and Quantity2 THREADED STUD
MaterialPLASTIC CASE
Nominal Thread Size0.138 INCHES IN
Maximum Continuous Load Current Rating Per Pole40.0 AMPERES DC SINGLE LOCATION
Reset MethodMANUAL
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 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.).
Internal Trip Release ConfigurationSERIES TRIP SINGLE LOCATION
Specification/standard Data81349-MIL-C-55629/1 GOVERNMENT SPECIFICATION
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Actuator FunctionTRIP-RESET
Thread Quantity Per Inch32
Distance Between Centerlines of Mounting Facilities Parallel to Body Length2.046 INCHES MINIMUM AND 2.078 INCHES MAXIMUM IN
Special Handling FeatureMAGNETIC
Fragility FactorMODERATELY RUGGED
Storage TypeGENERAL PURPOSE WAREHOUSE
Pole Quantity1
Arc Quenching MethodMAGNETIC BLOWOUT
Mounting Facility Type and Quantity2 THREADED HOLE(S)
Mounting Surface to Terminal End Distance2.553 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
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
5925-01-265-7723 INTERCHANGEABLE
Circuit Breaker
5925-01-265-7733 INTERCHANGEABLE
Circuit Breaker
5930-01-270-2159260-2159-00 INTERCHANGEABLE
Switch,push
Tektronix, Inc.
Cross-Reference Index
Part NumberManufacturer
M55629/1-240 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-55629/1D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
260-2159-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
MIL-C-55629/1 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
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
5925-01-265-7723INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-265-7733INTERCHANGEABLE
CIRCUIT BREAKER
5930-01-270-2159INTERCHANGEABLE
SWITCH,PUSH
260-2159-00
5925-01-274-1284INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-332-5631INTERCHANGEABLE
CIRCUIT BREAKER

Frequently Asked Questions

What is NSN 5925-01-097-6892?

NSN 5925-01-097-6892 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: cancelled.

What are the part numbers for NSN 5925-01-097-6892?

NSN 5925-01-097-6892 has 5 cross-referenced part numbers: M55629/1-240 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-55629/1D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 260-2159-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), MIL-C-55629/1 (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).

What NSN replaces 5925-01-097-6892?

There are 12 known substitutes for 5925-01-097-6892: 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 M55629/1-240?

Key specifications for M55629/1-240: Trip Delay Time in Seconds Per Rated Continuous Current: 0.600 MINIMUM AT 200 PCT AND 8.000 MAXIMUM AT 200 PCT SINGLE LOCATION; Manual Actuator Type and Quantity: 1 TOGGLE; Inclosure Protection Type for Which Designed: MOISTURE RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT; Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps: 2000.0 DC SINGLE LOCATION. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5925-01-097-6892 still in active supply?

NSN 5925-01-097-6892 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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