PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SM3Circuit Breaker

Eaton Corp Heinemann Products Commercial Controls Div · NSN 5925-00-912-2774 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-00-912-2774 — this item is cataloged by the U.S. Government under National Stock Number 5925-00-912-2774. Primary manufacturer part number: SM3.
Features
  • Circuit Breaker — FSC 5925
  • Reset Method: MANUAL
  • Main Contact Tripping Mechanism Type: TRIP FREE
  • Terminal Type and Quantity: 2 WIRE HOOK
  • Circuit Protection Type: OVERCURRENT SINGLE LOCATION
  • Maximum Continuous Load Current Rating Per Pole: 15.0 AMPERES AC SINGLE LOCATION
  • Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps: 500.0 AC SINGLE LOCATION
  • Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-00-912-2774, 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 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5925-00-912-2774
Primary Part NumberSM3
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerEaton Corp Heinemann Products Commercial Controls Div
StatusACTIVE
Reset MethodMANUAL
Main Contact Tripping Mechanism TypeTRIP FREE
Terminal Type and Quantity2 WIRE HOOK
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Maximum Continuous Load Current Rating Per Pole15.0 AMPERES AC SINGLE LOCATION
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps500.0 AC SINGLE LOCATION
Internal Trip Release ConfigurationSERIES TRIP SINGLE LOCATION
Operating Voltage Type and Rating Per Pole in Volts110.0 AC SINGLE LOCATION
Frequency in Hertz60.0 SINGLE LOCATION
Trip Release MethodMAGNETIC SINGLE LOCATION
Thread Series DesignatorUNEF
Nominal Thread Size0.375 INCHES IN
Actuator FunctionTRIP-RESET
Body Length1.448 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN
Trip Delay Time in Seconds Per Rated Continuous Current0.800 MINIMUM AT 200 PCT AND 3.000 MAXIMUM AT 200 PCT SINGLE LOCATION
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 SINGLE LOCATION
Actuator Position DesignationAT POLE ONE
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Manual Actuator Type and Quantity1 TOGGLE
Inclosure Protection Type for Which DesignedDUSTPROOF AND FUNGUS RESISTANT AND HERMETICALLY SEALED
Fragility FactorMODERATELY RUGGED
Arc Quenching MethodMAGNETIC BLOWOUT
Mounting Facility Type and Quantity1 THREADED BUSHING WITH PANEL SEAL
Center to Center Distance Between Terminals Parallel to Length0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN
Storage TypeGENERAL PURPOSE WAREHOUSE
Pole Quantity1
Mounting Surface to Terminal End Distance1.524 INCHES MINIMUM AND 1.586 INCHES MAXIMUM IN
Thread Quantity Per Inch32
Bushing Length0.360 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
Body Width0.567 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4310-00-273-0323SM3 INTERCHANGEABLE
Ring,piston
Circor Naval Solutions Llc Dba Warren Pumps
5905-00-903-691563A6A1-50000D21 INTERCHANGEABLE
Resistor,fixed,wire Wound
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5925-00-912-2769 INTERCHANGEABLE
Circuit Breaker
5905-00-944-263363A6A1-500R0B21 INTERCHANGEABLE
Resistor,fixed,wire Wound,nonind
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3455-01-042-4840 INTERCHANGEABLE
File,rotary
3010-01-548-2525SM3 INTERCHANGEABLE
Universal Joint,nonvehicular
Specialized Machine Inc
6230-01-677-5342SM-3 INTERCHANGEABLE
Light,marker,distress
Acr Electronics, Inc. Dba Acr Electronics Inc
Cross-Reference Index
Part NumberManufacturer
SM3 Eaton Corp Heinemann Products Commercial Controls Div (USA)
505298-1 Naval Air Warfare Center Aircraft Division Joint Base Jbmdl (USA)
Related Parts
4310-00-273-0323INTERCHANGEABLE
RING,PISTON
SM3
5905-00-903-6915INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
63A6A1-50000D21
5925-00-912-2769INTERCHANGEABLE
CIRCUIT BREAKER
5905-00-944-2633INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,NONIND
63A6A1-500R0B21
3455-01-042-4840INTERCHANGEABLE
FILE,ROTARY
3010-01-548-2525INTERCHANGEABLE
UNIVERSAL JOINT,NONVEHICULAR
SM3
6230-01-677-5342INTERCHANGEABLE
LIGHT,MARKER,DISTRESS
SM-3

Frequently Asked Questions

What is NSN 5925-00-912-2774?

NSN 5925-00-912-2774 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 5925-00-912-2774?

NSN 5925-00-912-2774 has 2 cross-referenced part numbers: SM3 (Eaton Corp Heinemann Products Commercial Controls Div), 505298-1 (Naval Air Warfare Center Aircraft Division Joint Base Jbmdl).

What NSN replaces 5925-00-912-2774?

There are 7 known substitutes for 5925-00-912-2774: 4310-00-273-0323, 5905-00-903-6915, 5925-00-912-2769 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SM3?

Key specifications for SM3: Reset Method: MANUAL; Main Contact Tripping Mechanism Type: TRIP FREE; Terminal Type and Quantity: 2 WIRE HOOK; Circuit Protection Type: OVERCURRENT SINGLE LOCATION. 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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