PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

APL1-51-0203MCircuit Breaker

Sensata Technologies Maryland, Inc · NSN 5925-00-583-8922 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-00-583-8922 — this item is cataloged by the U.S. Government under National Stock Number 5925-00-583-8922. Primary manufacturer part number: APL1-51-0203M.
Features
  • Circuit Breaker — FSC 5925
  • Special Handling Feature: MAGNETIC
  • Arc Quenching Method: MAGNETIC BLOWOUT
  • Storage Type: GENERAL PURPOSE WAREHOUSE
  • Thread Quantity Per Inch: 32
  • Mounting Surface to Terminal End Distance: 2.553 INCHES MAXIMUM IN
  • Boss Height: 0.109 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
  • Pole Quantity: 1
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-00-583-8922, 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 Sensata Technologies Maryland, Inc. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 5 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
NSN5925-00-583-8922
Primary Part NumberAPL1-51-0203M
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerSensata Technologies Maryland, Inc
StatusCANCELLED
Special Handling FeatureMAGNETIC
Arc Quenching MethodMAGNETIC BLOWOUT
Storage TypeGENERAL PURPOSE WAREHOUSE
Thread Quantity Per Inch32
Mounting Surface to Terminal End Distance2.553 INCHES MAXIMUM IN
Boss Height0.109 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
Pole Quantity1
Mounting Facility Type and Quantity2 THREADED HOLE(S)
Fragility FactorMODERATELY RUGGED
Center to Center Distance Between Terminals Parallel to Length1.660 INCHES MINIMUM AND 1.960 INCHES MAXIMUM IN
Distance Between Centerlines of Mounting Facilities Parallel to Body Length2.046 INCHES MINIMUM AND 2.078 INCHES MAXIMUM IN
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps2000.0 DC SINGLE LOCATION
Nominal Thread Size0.138 INCHES IN
Maximum Continuous Load Current Rating Per Pole20.0 AMPERES DC SINGLE LOCATION
Internal Trip Release ConfigurationSERIES TRIP SINGLE LOCATION
Body Length2.510 INCHES MAXIMUM IN
Manual Actuator Type and Quantity1 TOGGLE
Test Data Document81349-MIL-PRF-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.).
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 SINGLE LOCATION
Body Width0.730 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
Actuator Position DesignationAT POLE ONE
Trip Delay Time in Seconds Per Rated Continuous Current0.130 MINIMUM AT 200 PCT AND 1.400 MAXIMUM AT 200 PCT SINGLE LOCATION
Body StyleSINGLE POLE TYPE
Actuator FunctionTRIP-RESET
Specification/standard Data81349-MIL-PRF-55629/1 GOVERNMENT SPECIFICATION
MaterialPLASTIC CASE
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Operating Voltage Type and Rating Per Pole in Volts50.0 DC SINGLE LOCATION
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Inclosure Protection Type for Which DesignedMOISTURE RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5925-00-163-6982 INTERCHANGEABLE
Circuit Breaker
5925-00-487-6532 INTERCHANGEABLE
Circuit Breaker
5925-00-566-4169 INTERCHANGEABLE
Circuit Breaker
5925-01-005-9799 INTERCHANGEABLE
Circuit Breaker
5925-01-019-9426IELK1-1-62-6.00-01-V INTERCHANGEABLE
Circuit Breaker
Sensata Technologies, Inc. Div Sensata Attleboro
5925-01-075-3802 INTERCHANGEABLE
Circuit Breaker
5925-01-097-6892 INTERCHANGEABLE
Circuit Breaker
5925-01-265-7723 INTERCHANGEABLE
Circuit Breaker
5925-01-265-7733 INTERCHANGEABLE
Circuit Breaker
5925-01-274-1284 INTERCHANGEABLE
Circuit Breaker
Cross-Reference Index
Part NumberManufacturer
APL1-51-0203M Sensata Technologies Maryland, Inc (USA)
APL1-55629-1-100 Sensata Technologies Maryland, Inc (USA)
2566-106 Reliance Comm/tec Corp Lorain Products Div (USA)
AM12MG3-20-28VDC5 Eaton Corp Heinemann Products Commercial Controls Div (USA)
AM12MG6-20-50VDC5 Eaton Corp Heinemann Products Commercial Controls Div (USA)
MIL-PRF-55629/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AM1-B3-20-3 Eaton Corp Heinemann Products Commercial Controls Div (USA)
APL-1-1-51-203-M Sensata Technologies Maryland, Inc (USA)
M55629/1-100 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-55629/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-55629/1D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
APL1FD203F Sensata Technologies Maryland, Inc (USA)
214N Reliance Comm/tec Corp Lorain Products Div (USA)
AM12-20-32V5 Eaton Corp Heinemann Products Commercial Controls Div (USA)
APL-51-20AMP Sensata Technologies Maryland, Inc (USA)
W91X15-3-20 Te Connectivity Corporation (USA)
Related Parts
5925-00-163-6982INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-487-6532INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-566-4169INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-005-9799INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-019-9426INTERCHANGEABLE
CIRCUIT BREAKER
IELK1-1-62-6.00-01-V
5925-01-075-3802INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-097-6892INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-265-7723INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-265-7733INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-274-1284INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-332-5631INTERCHANGEABLE
CIRCUIT BREAKER
5925-01-354-9726INTERCHANGEABLE
CIRCUIT BREAKER

Frequently Asked Questions

What is NSN 5925-00-583-8922?

NSN 5925-00-583-8922 is a Circuit Breaker, manufactured by Sensata Technologies Maryland, Inc, classified under FSC 5925 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5925-00-583-8922?

NSN 5925-00-583-8922 has 16 cross-referenced part numbers: APL1-51-0203M (Sensata Technologies Maryland, Inc), APL1-55629-1-100 (Sensata Technologies Maryland, Inc), 2566-106 (Reliance Comm/tec Corp Lorain Products Div), AM12MG3-20-28VDC5 (Eaton Corp Heinemann Products Commercial Controls Div), AM12MG6-20-50VDC5 (Eaton Corp Heinemann Products Commercial Controls Div) and 11 more.

What NSN replaces 5925-00-583-8922?

There are 12 known substitutes for 5925-00-583-8922: 5925-00-163-6982, 5925-00-487-6532, 5925-00-566-4169 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of APL1-51-0203M?

Key specifications for APL1-51-0203M: Special Handling Feature: MAGNETIC; Arc Quenching Method: MAGNETIC BLOWOUT; Storage Type: GENERAL PURPOSE WAREHOUSE; Thread Quantity Per Inch: 32. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5925-00-583-8922 still in active supply?

NSN 5925-00-583-8922 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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