PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P1-25Circuit Breaker

Westinghouse Electric Corp · NSN 5925-00-227-0386 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-00-227-0386 — this item is cataloged by the U.S. Government under National Stock Number 5925-00-227-0386. Primary manufacturer part number: P1-25.
Features
  • Circuit Breaker — FSC 5925
  • Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION
  • Terminal Type and Quantity: 2 THREADED STUD
  • Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent: 125.0 SINGLE LOCATION
  • Material: PLASTIC CASE
  • Nominal Thread Size: 0.164 INCHES IN
  • Trip Release Method: THERMAL SINGLE LOCATION
  • Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps: 5000.0 AC AND 5000.0 DC SINGLE LOCATION
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-00-227-0386, 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 Westinghouse Electric Corp. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5925-00-227-0386
Primary Part NumberP1-25
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerWestinghouse Electric Corp
StatusCANCELLED
Internal Trip Release ConfigurationSERIES TRIP SINGLE LOCATION
Terminal Type and Quantity2 THREADED STUD
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 SINGLE LOCATION
MaterialPLASTIC CASE
Nominal Thread Size0.164 INCHES IN
Trip Release MethodTHERMAL SINGLE LOCATION
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps5000.0 AC AND 5000.0 DC SINGLE LOCATION
Maximum Continuous Load Current Rating Per Pole25.0 AMPERES AC AND 25.0 AMPERES DC SINGLE LOCATION
Operating Voltage Type and Rating Per Pole in Volts120.0 AC AND 32.0 DC SINGLE LOCATION
Pole Quantity1
Thread Quantity Per Inch32
Unthreaded Mounting Hole Diameter0.188 INCHES NOMINAL IN
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S)
Trip Release Ambient Temp Rating25.0 CELSIUS NOMINAL SINGLE LOCATION DEGC
Ultimate Trip Time Per Pole in Seconds80.000 MINIMUM AND 3600.000 MAXIMUM SINGLE LOCATION
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Main Contact Tripping Mechanism TypeTRIP FREE
Reset MethodMANUAL
Actuator FunctionTRIP W/SEPARATE RESET
Trip Delay Time in Seconds Per Rated Continuous Current12.800 MINIMUM AT 200 PCT AND 38.000 MAXIMUM AT 200 PCT SINGLE LOCATION
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Manual Actuator Type and Quantity1 TOGGLE
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5920-00-280-4438 INTERCHANGEABLE
Fuse,cartridge
3040-00-880-1230P1-25 INTERCHANGEABLE
Follower,cam
Roller Bearing Co of America, Inc Div Pic Design
5310-01-376-6686P-125 INTERCHANGEABLE
Nut,self-Locking,cap
Alfred Conhagen, Inc.
4820-01-383-7014MS-4 INTERCHANGEABLE
Valve,check
Oasis Construction Div Supply Nurses
6625-01-440-7858P-12-5 INTERCHANGEABLE
Lead,test
Fluke Electronics Corp
3770-01-575-7596P125 INTERCHANGEABLE
Sleeve,obstetrical,veterinary
Neogen Corp
4730-01-664-2295P1.25 INTERCHANGEABLE
Coupling,pipe
Piedmont Pacific Corp
5905-01-688-3893P125 INTERCHANGEABLE
Resistor,chip,fixed,film
Lockheed Martin Corporation Div Rms
Cross-Reference Index
Part NumberManufacturer
P1-25 PRIMARY Westinghouse Electric Corp (USA)
1532194 PRIMARY Westinghouse Electric Corp (USA)
Related Parts
5920-00-280-4438INTERCHANGEABLE
FUSE,CARTRIDGE
3040-00-880-1230INTERCHANGEABLE
FOLLOWER,CAM
P1-25
5310-01-376-6686INTERCHANGEABLE
NUT,SELF-LOCKING,CAP
P-125
4820-01-383-7014INTERCHANGEABLE
VALVE,CHECK
MS-4
6625-01-440-7858INTERCHANGEABLE
LEAD,TEST
P-12-5
3770-01-575-7596INTERCHANGEABLE
SLEEVE,OBSTETRICAL,VETERINARY
P125
4730-01-664-2295INTERCHANGEABLE
COUPLING,PIPE
P1.25
5905-01-688-3893INTERCHANGEABLE
RESISTOR,CHIP,FIXED,FILM
P125

Frequently Asked Questions

What is NSN 5925-00-227-0386?

NSN 5925-00-227-0386 is a Circuit Breaker, manufactured by Westinghouse Electric Corp, classified under FSC 5925 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5925-00-227-0386?

NSN 5925-00-227-0386 has 2 cross-referenced part numbers: P1-25 (Westinghouse Electric Corp), 1532194 (Westinghouse Electric Corp).

What NSN replaces 5925-00-227-0386?

There are 8 known substitutes for 5925-00-227-0386: 5920-00-280-4438, 3040-00-880-1230, 5310-01-376-6686 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of P1-25?

Key specifications for P1-25: Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION; Terminal Type and Quantity: 2 THREADED STUD; Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent: 125.0 SINGLE LOCATION; Material: PLASTIC CASE. 23 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5925-00-227-0386 still in active supply?

NSN 5925-00-227-0386 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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