PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M55629/1-407Circuit Breaker

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5925-01-354-9726 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-01-354-9726 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-354-9726. Primary manufacturer part number: M55629/1-407.
Features
  • Circuit Breaker — FSC 5925
  • Trip Delay Time in Seconds Per Rated Continuous Current: 2.500 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT SINGLE LOCATION
  • Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION
  • Terminal Type and Quantity: 2 THREADED STUD
  • Maximum Continuous Load Current Rating Per Pole: 35.0 AMPERES DC SINGLE LOCATION
  • Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent: 115.0 SINGLE LOCATION
  • Center to Center Distance Between Terminals Parallel to Length: 1.810 INCHES NOMINAL IN
  • Boss Height: 0.140 INCHES NOMINAL IN
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-01-354-9726, 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 27 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
NSN5925-01-354-9726
Primary Part NumberM55629/1-407
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
Trip Delay Time in Seconds Per Rated Continuous Current2.500 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT SINGLE LOCATION
Internal Trip Release ConfigurationSERIES TRIP SINGLE LOCATION
Terminal Type and Quantity2 THREADED STUD
Maximum Continuous Load Current Rating Per Pole35.0 AMPERES DC SINGLE LOCATION
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent115.0 SINGLE LOCATION
Center to Center Distance Between Terminals Parallel to Length1.810 INCHES NOMINAL IN
Boss Height0.140 INCHES NOMINAL IN
Distance Between Centerlines of Mounting Facilities Parallel to Body Length2.062 INCHES NOMINAL IN
Pole Quantity1
Mounting Facility Type and Quantity2 THREADED HOLE(S)
Mounting Surface to Terminal End Distance2.553 INCHES MAXIMUM IN
Body Width0.750 INCHES NOMINAL IN
Body Length2.510 INCHES MAXIMUM IN
Main Contact Tripping Mechanism TypeTRIP FREE
MaterialPLASTIC CASE
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Trip Release MethodMAGNETIC SINGLE LOCATION
Actuator Position DesignationAT POLE ONE
Manual Actuator Type and Quantity1 TOGGLE
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps2000.0 DC SINGLE LOCATION
Operating Voltage Type and Rating Per Pole in Volts50.0 DC SINGLE LOCATION
Body StyleSINGLE POLE TYPE
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Reset MethodMANUAL
Nominal Thread Size0.138 INCHES IN
Actuator FunctionTRIP-RESET
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
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
5925-01-265-7723 INTERCHANGEABLE
Circuit Breaker
5925-01-265-7733 INTERCHANGEABLE
Circuit Breaker
Cross-Reference Index
Part NumberManufacturer
M55629/1-407 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
MIL-PRF-55629/1D 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
5925-01-265-7723INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-265-7733INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-274-1284INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-332-5631INTERCHANGEABLE
CIRCUIT BREAKER

Frequently Asked Questions

What is NSN 5925-01-354-9726?

NSN 5925-01-354-9726 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 5925-01-354-9726?

NSN 5925-01-354-9726 has 4 cross-referenced part numbers: M55629/1-407 (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), MIL-PRF-55629/1D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5925-01-354-9726?

There are 12 known substitutes for 5925-01-354-9726: 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 M55629/1-407?

Key specifications for M55629/1-407: Trip Delay Time in Seconds Per Rated Continuous Current: 2.500 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT SINGLE LOCATION; Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION; Terminal Type and Quantity: 2 THREADED STUD; Maximum Continuous Load Current Rating Per Pole: 35.0 AMPERES DC SINGLE LOCATION. 27 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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