PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AQB-S250Circuit Breaker

L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. · NSN 5925-01-431-8266 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-01-431-8266 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-431-8266. Primary manufacturer part number: AQB-S250.
Features
  • Circuit Breaker — FSC 5925
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
  • 3 verified cross-references
  • Primary manufacturer: L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-01-431-8266, 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 L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5925-01-431-8266
Primary Part NumberAQB-S250
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerL3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5940-00-258-2106100078P1 INTERCHANGEABLE
Terminal,lug
Lockheed Martin Corporation Div Rms
5945-00-583-8028 INTERCHANGEABLE
Relay,electromagnetic
1680-01-030-1090118050-01 INTERCHANGEABLE
Hanger Quick Release
B/e Aerospace, Inc. Dba Interturbine Div Oxygen & PSU Systems
4820-01-164-7888RA16478 INTERCHANGEABLE
Cap,valve
Industrial Consortium Inc Div Richard S. Raffauf Jr
4820-01-647-2890118050 INTERCHANGEABLE
Valve,ball
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
AQB-S250 L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA)
118050 Naval Inventory Control Point Mechanicsburg (USA)
118050 L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA)
Related Parts
5940-00-258-2106INTERCHANGEABLE
TERMINAL,LUG
100078P1
5945-00-583-8028INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
1680-01-030-1090INTERCHANGEABLE
HANGER QUICK RELEASE
118050-01
4820-01-164-7888INTERCHANGEABLE
CAP,VALVE
RA16478
4820-01-647-2890INTERCHANGEABLE
VALVE,BALL
118050

Frequently Asked Questions

What is NSN 5925-01-431-8266?

NSN 5925-01-431-8266 is a Circuit Breaker, manufactured by L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc., classified under FSC 5925 (No Item Name Available). Status: active.

What are the part numbers for NSN 5925-01-431-8266?

NSN 5925-01-431-8266 has 3 cross-referenced part numbers: AQB-S250 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.), 118050 (Naval Inventory Control Point Mechanicsburg), 118050 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.).

What NSN replaces 5925-01-431-8266?

There are 5 known substitutes for 5925-01-431-8266: 5940-00-258-2106, 5945-00-583-8028, 1680-01-030-1090 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AQB-S250?

Key specifications for AQB-S250: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. 2 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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