PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30956Circuit Breaker

Smart Machines, Inc. Dba Barker and Williamson · NSN 5925-00-089-6131 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-00-089-6131 — this item is cataloged by the U.S. Government under National Stock Number 5925-00-089-6131. Primary manufacturer part number: 30956.
Features
  • Circuit Breaker — FSC 5925
  • Terminal Type and Quantity: 2 SCREW
  • Trip Release Ambient Temp Rating: 50.0 CELSIUS NOMINAL SINGLE LOCATION DEGC
  • Fragility Factor: MODERATELY RUGGED
  • Thread Quantity Per Inch: 32
  • Mounting Facility Type and Quantity: 1 THREADED STUD(S)
  • Pole Quantity: 1
  • Special Handling Feature: MAGNETIC
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-00-089-6131, 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 Smart Machines, Inc. Dba Barker and Williamson. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5925-00-089-6131
Primary Part Number30956
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerSmart Machines, Inc. Dba Barker and Williamson
StatusCANCELLED
Terminal Type and Quantity2 SCREW
Trip Release Ambient Temp Rating50.0 CELSIUS NOMINAL SINGLE LOCATION DEGC
Fragility FactorMODERATELY RUGGED
Thread Quantity Per Inch32
Mounting Facility Type and Quantity1 THREADED STUD(S)
Pole Quantity1
Special Handling FeatureMAGNETIC
Storage TypeGENERAL PURPOSE WAREHOUSE
Inclosure Protection Type for Which DesignedDUSTPROOF
Nominal Thread Size0.190 INCHES IN
Main Contact Tripping Mechanism TypeTRIP FREE
Trip Delay Time in Seconds Per Rated Continuous Current5.000 MINIMUM AT 125 PCT AND 1.500 MAXIMUM AT 200 PCT SINGLE LOCATION
Maximum Continuous Load Current Rating Per Pole30.0 AMPERES AC SINGLE LOCATION
Trip Release MethodTHERMAL-MAGNETIC SINGLE LOCATION
Reset MethodMANUAL
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps10000.0 AC SINGLE LOCATION
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 SINGLE LOCATION
Operating Voltage Type and Rating Per Pole in Volts120.0 AC SINGLE LOCATION
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Thread Series DesignatorUNF
Actuator FunctionRESET
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Actuator Position DesignationAT POLE ONE
Frequency in Hertz60.0 SINGLE LOCATION
MaterialPLASTIC CASE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5330-00-155-4866P130 INTERCHANGEABLE
Gasket
Sterling Engine Co Inc
3030-00-529-0481 INTERCHANGEABLE
Belt,v
5360-01-216-379530956 INTERCHANGEABLE
Spring,helical,compression
Adams Rite Aerospace, Inc
6660-01-437-7802P130 INTERCHANGEABLE
Balloon,meteorological
Aerostar International, Llc
Cross-Reference Index
Part NumberManufacturer
30956 Smart Machines, Inc. Dba Barker and Williamson (USA)
P130 I-T-E Imperial Corp Sub of Gould Inc Distribution and Controls Div (USA)
30956 Barker & Williamson (USA)
Related Parts
5330-00-155-4866INTERCHANGEABLE
GASKET
P130
3030-00-529-0481INTERCHANGEABLE
BELT,V
5360-01-216-3795INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
30956
6660-01-437-7802INTERCHANGEABLE
BALLOON,METEOROLOGICAL
P130

Frequently Asked Questions

What is NSN 5925-00-089-6131?

NSN 5925-00-089-6131 is a Circuit Breaker, manufactured by Smart Machines, Inc. Dba Barker and Williamson, classified under FSC 5925 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5925-00-089-6131?

NSN 5925-00-089-6131 has 3 cross-referenced part numbers: 30956 (Smart Machines, Inc. Dba Barker and Williamson), P130 (I-T-E Imperial Corp Sub of Gould Inc Distribution and Controls Div), 30956 (Barker & Williamson).

What NSN replaces 5925-00-089-6131?

There are 4 known substitutes for 5925-00-089-6131: 5330-00-155-4866, 3030-00-529-0481, 5360-01-216-3795 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30956?

Key specifications for 30956: Terminal Type and Quantity: 2 SCREW; Trip Release Ambient Temp Rating: 50.0 CELSIUS NOMINAL SINGLE LOCATION DEGC; Fragility Factor: MODERATELY RUGGED; Thread Quantity Per Inch: 32. 25 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5925-00-089-6131 still in active supply?

NSN 5925-00-089-6131 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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