PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AQB-A101-50HCircuit Breaker

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5925-01-051-5537 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-01-051-5537 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-051-5537. Primary manufacturer part number: AQB-A101-50H.
Features
  • Circuit Breaker — FSC 5925
  • Test Data Document: 81349-MIL-DTL-17361 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.).
  • Frequency in Hertz: 400.0 ALL LOCATIONS
  • Operating Voltage Type and Rating Per Pole in Volts: 500.0 AC ALL LOCATIONS
  • Material: PLASTIC CASE
  • Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps: 10000.0 AC ALL LOCATIONS
  • Trip Release Method: THERMAL-MAGNETIC ALL LOCATIONS
  • Main Contact Tripping Mechanism Type: TRIP FREE
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-01-051-5537, 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 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5925-01-051-5537
Primary Part NumberAQB-A101-50H
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
Test Data Document81349-MIL-DTL-17361 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.).
Frequency in Hertz400.0 ALL LOCATIONS
Operating Voltage Type and Rating Per Pole in Volts500.0 AC ALL LOCATIONS
MaterialPLASTIC CASE
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps10000.0 AC ALL LOCATIONS
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Main Contact Tripping Mechanism TypeTRIP FREE
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent138.0 ALL LOCATIONS
Specification/standard Data81349-MIL-DTL-17361/4 GOVERNMENT SPECIFICATION
Actuator FunctionTRIP-RESET
Inclosure Protection Type for Which DesignedFUNGUS RESISTANT
Manual Actuator Type and Quantity1 TOGGLE
Terminal Type and Quantity6 CLIP
Nominal Thread Size0.190 INCHES IN
Trip Release CharacteristicINSTANTANEOUS ALL LOCATIONS
Maximum Continuous Load Current Rating Per Pole50.0 AMPERES AC ALL LOCATIONS
Reset MethodMANUAL
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Storage TypeGENERAL PURPOSE WAREHOUSE
Center to Center Distance Between Terminals Parallel to Width1.375 INCHES MAXIMUM IN
Distance Between Centerlines of Mounting Facilities Parallel to Body Width1.375 INCHES MAXIMUM IN
Thread Quantity Per Inch32
Pole Quantity3
Center to Center Distance Between Terminals Parallel to Length3.938 INCHES MAXIMUM IN
Mounting Facility Type and Quantity4 THREADED HOLE(S)
Distance Between Centerlines of Mounting Facilities Parallel to Body Length3.312 INCHES MAXIMUM IN
Boss Height0.187 INCHES MAXIMUM IN
Trip Release Ambient Temp Rating50.0 CELSIUS NOMINAL ALL LOCATIONS DEGC
Thread Series DesignatorUNF
Body Length6.500 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5925-00-867-7328 INTERCHANGEABLE
Circuit Breaker
5925-00-867-7329 INTERCHANGEABLE
Circuit Breaker
5925-00-876-9216 INTERCHANGEABLE
Circuit Breaker
5925-00-876-9217 INTERCHANGEABLE
Circuit Breaker
5925-00-876-9218 INTERCHANGEABLE
Circuit Breaker
5925-01-136-5633 INTERCHANGEABLE
Circuit Breaker
5925-01-227-8378 INTERCHANGEABLE
Circuit Breaker
5925-01-261-56232915844-2 INTERCHANGEABLE
Circuit Breaker
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5920-01-281-4158 INTERCHANGEABLE
Fuse Box
5925-01-318-4436 INTERCHANGEABLE
Circuit Breaker
Cross-Reference Index
Part NumberManufacturer
AQB-A101-50H Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-17361 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-17361/4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5925-00-867-7328INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-867-7329INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-876-9216INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-876-9217INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-876-9218INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-136-5633INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-227-8378INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-261-5623INTERCHANGEABLE
CIRCUIT BREAKER
2915844-2
5920-01-281-4158INTERCHANGEABLE
FUSE BOX
5925-01-318-4436INTERCHANGEABLE
CIRCUIT BREAKER

Frequently Asked Questions

What is NSN 5925-01-051-5537?

NSN 5925-01-051-5537 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 5925-01-051-5537?

NSN 5925-01-051-5537 has 3 cross-referenced part numbers: AQB-A101-50H (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-17361 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-17361/4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5925-01-051-5537?

There are 10 known substitutes for 5925-01-051-5537: 5925-00-867-7328, 5925-00-867-7329, 5925-00-876-9216 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AQB-A101-50H?

Key specifications for AQB-A101-50H: Test Data Document: 81349-MIL-DTL-17361 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.).; Frequency in Hertz: 400.0 ALL LOCATIONS; Operating Voltage Type and Rating Per Pole in Volts: 500.0 AC ALL LOCATIONS; Material: PLASTIC CASE. 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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