PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AM1-A3-A3-2Circuit Breaker

Eaton Corp Heinemann Products Commercial Controls Div · NSN 5925-00-409-3613 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-00-409-3613 — this item is cataloged by the U.S. Government under National Stock Number 5925-00-409-3613. Primary manufacturer part number: AM1-A3-A3-2.
Features
  • Circuit Breaker — FSC 5925
  • Actuator Function: TRIP-RESET
  • Actuator Position Designation: AT POLE ONE
  • Material: PLASTIC CASE
  • Main Contact Tripping Mechanism Type: TRIP FREE
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Circuit Protection Type: OVERCURRENT SINGLE LOCATION
  • Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-00-409-3613, 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 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5925-00-409-3613
Primary Part NumberAM1-A3-A3-2
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerEaton Corp Heinemann Products Commercial Controls Div
StatusACTIVE
Actuator FunctionTRIP-RESET
Actuator Position DesignationAT POLE ONE
MaterialPLASTIC CASE
Main Contact Tripping Mechanism TypeTRIP FREE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Internal Trip Release ConfigurationSERIES TRIP SINGLE LOCATION
Trip Delay Time in Seconds Per Rated Continuous Current1.500 NOMINAL AT 200 PCT AND 1.000 NOMINAL AT 400 PCT SINGLE LOCATION
Manual Actuator Type and Quantity1 TOGGLE
Reset MethodMANUAL
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Terminal Type and Quantity2 THREADED STUD
Arc Quenching MethodMAGNETIC BLOWOUT
Center to Center Distance Between Terminals Parallel to Length1.940 INCHES NOMINAL IN
Boss Height0.130 INCHES NOMINAL IN
Pole Quantity1
Thread Quantity Per Inch32
Mounting Surface to Terminal End Distance2.500 INCHES NOMINAL IN
Mounting Facility Type and Quantity2 THREADED HOLE(S)
Distance Between Centerlines of Mounting Facilities Parallel to Body Length2.060 INCHES NOMINAL IN
Body Length2.530 INCHES NOMINAL IN
Body Width0.760 INCHES NOMINAL IN
Frequency in Hertz60.0 SINGLE LOCATION
Operating Voltage Type and Rating Per Pole in Volts250.0 AC SINGLE LOCATION
Trip Release MethodMAGNETIC-HYDRAULIC SINGLE LOCATION
Maximum Continuous Load Current Rating Per Pole3.0 AMPERES AC SINGLE LOCATION
Nominal Thread Size0.138 INCHES IN
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps1000.0 AC SINGLE LOCATION
Body StyleSINGLE POLE TYPE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2840-00-475-0433420439 INTERCHANGEABLE
Seal,air,aircraft Gas Turbine En
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Cross-Reference Index
Part NumberManufacturer
AM1-A3-A3-2 Eaton Corp Heinemann Products Commercial Controls Div (USA)
420439 Raytheon Technical Services Company (USA)
AM12-3-250-60-4 Eaton Corp Heinemann Products Commercial Controls Div (USA)
420439 Cae Usa Inc. (USA)
AM1A3A3+2 Eaton Corp Heinemann Products Commercial Controls Div (USA)
Related Parts
2840-00-475-0433INTERCHANGEABLE
SEAL,AIR,AIRCRAFT GAS TURBINE EN
420439

Frequently Asked Questions

What is NSN 5925-00-409-3613?

NSN 5925-00-409-3613 is a Circuit Breaker, manufactured by Eaton Corp Heinemann Products Commercial Controls Div, classified under FSC 5925 (No Item Name Available). Status: active.

What are the part numbers for NSN 5925-00-409-3613?

NSN 5925-00-409-3613 has 5 cross-referenced part numbers: AM1-A3-A3-2 (Eaton Corp Heinemann Products Commercial Controls Div), 420439 (Raytheon Technical Services Company), AM12-3-250-60-4 (Eaton Corp Heinemann Products Commercial Controls Div), 420439 (Cae Usa Inc.), AM1A3A3+2 (Eaton Corp Heinemann Products Commercial Controls Div).

What NSN replaces 5925-00-409-3613?

There is 1 known substitute for 5925-00-409-3613: 2840-00-475-0433. Verify interchangeability with system specifications before substitution.

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

Key specifications for AM1-A3-A3-2: Actuator Function: TRIP-RESET; Actuator Position Designation: AT POLE ONE; Material: PLASTIC CASE; Main Contact Tripping Mechanism Type: TRIP FREE. 29 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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