PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AM1-A3-A-5-2Circuit Breaker

Eaton Corp Heinemann Products Commercial Controls Div · NSN 5925-01-005-9799 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-01-005-9799 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-005-9799. Primary manufacturer part number: AM1-A3-A-5-2.
Features
  • Circuit Breaker — FSC 5925
  • Specification/standard Data: 81349-MIL-C-55629/1 GOVERNMENT SPECIFICATION
  • Reset Method: MANUAL
  • Maximum Continuous Load Current Rating Per Pole: 5.0 AMPERES AC SINGLE LOCATION
  • Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION
  • Operating Voltage Type and Rating Per Pole in Volts: 240.0 AC SINGLE LOCATION
  • Terminal Type and Quantity: 2 THREADED STUD
  • Trip Delay Time in Seconds Per Rated Continuous Current: 2.200 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT SINGLE LOCATION
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-01-005-9799, 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 Eaton Corp Heinemann Products Commercial Controls Div. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 20 commercial cross-references from 9 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
NSN5925-01-005-9799
Primary Part NumberAM1-A3-A-5-2
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerEaton Corp Heinemann Products Commercial Controls Div
StatusCANCELLED
Specification/standard Data81349-MIL-C-55629/1 GOVERNMENT SPECIFICATION
Reset MethodMANUAL
Maximum Continuous Load Current Rating Per Pole5.0 AMPERES AC SINGLE LOCATION
Internal Trip Release ConfigurationSERIES TRIP SINGLE LOCATION
Operating Voltage Type and Rating Per Pole in Volts240.0 AC SINGLE LOCATION
Terminal Type and Quantity2 THREADED STUD
Trip Delay Time in Seconds Per Rated Continuous Current2.200 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT SINGLE LOCATION
Main Contact Tripping Mechanism TypeTRIP FREE
Frequency in Hertz60.0 SINGLE LOCATION
Actuator FunctionTRIP-RESET
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps1000.0 AC SINGLE LOCATION
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 SINGLE LOCATION
Actuator Position DesignationAT POLE ONE
Manual Actuator Type and Quantity1 TOGGLE
Trip Release CharacteristicTIME DELAY 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.).
Inclosure Protection Type for Which DesignedFUNGUS RESISTANT AND MOISTURE RESISTANT AND SALT SPRAY PROOF AND SHOCK RESISTANT AND VIBRATION RESISTANT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialPLASTIC CASE
Trip Release MethodMAGNETIC SINGLE LOCATION
Nominal Thread Size0.138 INCHES IN
Special Handling FeatureMAGNETIC
Boss Height0.140 INCHES NOMINAL IN
Pole Quantity1
Distance Between Centerlines of Mounting Facilities Parallel to Body Length2.046 INCHES MINIMUM AND 2.078 INCHES MAXIMUM IN
Fragility FactorMODERATELY RUGGED
Storage TypeGENERAL PURPOSE WAREHOUSE
Mounting Surface to Terminal End Distance2.553 INCHES MAXIMUM IN
Arc Quenching MethodMAGNETIC BLOWOUT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5925-00-058-6363 INTERCHANGEABLE
Circuit Breaker
2520-00-149-927024-45700-2045-2 INTERCHANGEABLE
Gerotor Set,transmission
Parker-Hannifin Corporation Dba Pneutronics Div Gas Turbine Fuel Systems Division
5925-00-163-6982 INTERCHANGEABLE
Circuit Breaker
5925-00-487-1498 INTERCHANGEABLE
Circuit Breaker
5925-00-487-6532 INTERCHANGEABLE
Circuit Breaker
5925-00-566-4169 INTERCHANGEABLE
Circuit Breaker
5136-00-580-735554520 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
5925-00-583-8922 INTERCHANGEABLE
Circuit Breaker
5925-01-019-9426IELK1-1-62-6.00-01-V INTERCHANGEABLE
Circuit Breaker
Sensata Technologies, Inc. Div Sensata Attleboro
5925-01-023-2476533711-146 INTERCHANGEABLE
Circuit Breaker
Raytheon Company Dba Raytheon
Cross-Reference Index
Part NumberManufacturer
AM1-A3-A-5-2 Eaton Corp Heinemann Products Commercial Controls Div (USA)
AM12MG6-5-125VAC-4-60HZ Eaton Corp Heinemann Products Commercial Controls Div (USA)
17-03991-5 Lockheed Martin Corporation Dba Lockheed Martin Rotary and Mission Systems Div Rms- C6isr (USA)
9125000011 Lockheed Martin Corporation Div Lockheed Martin Information Systems & Global Solutions (USA)
P161-54S11 Northrop Grumman Systems Corporation (USA)
AM12-5-120-60-4 Eaton Corp Heinemann Products Commercial Controls Div (USA)
MIL-PRF-55629/1D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
533711-299 Raytheon Company Dba Raytheon (USA)
MIL-C-55629/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-55629/1F Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AM1-A3-A-5-250-2 Eaton Corp Heinemann Products Commercial Controls Div (USA)
M55629/1-045 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
AM1-Z22-045 Eaton Corp Heinemann Products Commercial Controls Div (USA)
AM1-A3-5-2 Eaton Corp Heinemann Products Commercial Controls Div (USA)
AM12MG6-5-250-60-4 Eaton Corp Heinemann Products Commercial Controls Div (USA)
54520 Keco Industries, Inc. (USA)
AM1-A3AW-5-2 Eaton Corp Heinemann Products Commercial Controls Div (USA)
122-205-101 Wood Electric Operations Potter and Brumfield Div Amf Inc (USA)
APL-1-55629-1-045 Sensata Technologies Maryland, Inc (USA)
Related Parts
5925-00-058-6363INTERCHANGEABLE
CIRCUIT BREAKER
2520-00-149-9270INTERCHANGEABLE
GEROTOR SET,TRANSMISSION
24-45700-2045-2
5925-00-163-6982INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-487-1498INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-487-6532INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-566-4169INTERCHANGEABLE
CIRCUIT BREAKER
5136-00-580-7355INTERCHANGEABLE
TAP,THREAD CUTTING
54520
5925-00-583-8922INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-019-9426INTERCHANGEABLE
CIRCUIT BREAKER
IELK1-1-62-6.00-01-V
5925-01-023-2476INTERCHANGEABLE
CIRCUIT BREAKER
533711-146
5925-01-044-5508INTERCHANGEABLE
CIRCUIT BREAKER
5940-01-070-4243INTERCHANGEABLE
SPLICE,CONDUCTOR
BCU 060

Frequently Asked Questions

What is NSN 5925-01-005-9799?

NSN 5925-01-005-9799 is a Circuit Breaker, manufactured by Eaton Corp Heinemann Products Commercial Controls Div, classified under FSC 5925 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5925-01-005-9799?

NSN 5925-01-005-9799 has 20 cross-referenced part numbers: AM1-A3-A-5-2 (Eaton Corp Heinemann Products Commercial Controls Div), AM12MG6-5-125VAC-4-60HZ (Eaton Corp Heinemann Products Commercial Controls Div), 17-03991-5 (Lockheed Martin Corporation Dba Lockheed Martin Rotary and Mission Systems Div Rms- C6isr), 9125000011 (Lockheed Martin Corporation Div Lockheed Martin Information Systems & Global Solutions), P161-54S11 (Northrop Grumman Systems Corporation) and 15 more.

What NSN replaces 5925-01-005-9799?

There are 12 known substitutes for 5925-01-005-9799: 5925-00-058-6363, 2520-00-149-9270, 5925-00-163-6982 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AM1-A3-A-5-2?

Key specifications for AM1-A3-A-5-2: Specification/standard Data: 81349-MIL-C-55629/1 GOVERNMENT SPECIFICATION; Reset Method: MANUAL; Maximum Continuous Load Current Rating Per Pole: 5.0 AMPERES AC SINGLE LOCATION; Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5925-01-005-9799 still in active supply?

NSN 5925-01-005-9799 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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