PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AA55509-012Fuse,indicator Alarm

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 5920-01-056-7256 · FSC 5920 · No Item Name Available
Verified by PartsTable
NSN 5920-01-056-7256 — this item is cataloged by the U.S. Government under National Stock Number 5920-01-056-7256. Primary manufacturer part number: AA55509-012.
Features
  • Fuse,indicator Alarm — FSC 5920
  • Interruption Indicator Method: GRASSHOPPER
  • Maximum Voltage Rating in Volts: 300.0 AC AND 300.0 DC
  • Body Style: MINIATURE GRASSHOPPER
  • Circuit Over-Current Interruption Type: NORMAL INSTANTANEOUS
  • Continuous Current Rating in Amps: 3.500
  • 5 verified cross-references
  • Primary manufacturer: Federal Commercial Item Description Promulgated by General Services Administration Washington DC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Fuse,indicator Alarm, cataloged under National Stock Number 5920-01-056-7256, is classified within Federal Supply Class 5920 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5920-01-056-7256
Primary Part NumberAA55509-012
Item NameFuse,indicator Alarm
FSC / FSG5920 / 59 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Interruption Indicator MethodGRASSHOPPER
Maximum Voltage Rating in Volts300.0 AC AND 300.0 DC
Body StyleMINIATURE GRASSHOPPER
Circuit Over-Current Interruption TypeNORMAL INSTANTANEOUS
Continuous Current Rating in Amps3.500
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5920-00-068-7353 INTERCHANGEABLE
Fuse,indicator Alarm
5920-00-126-1873 INTERCHANGEABLE
Fuse,indicator Alarm
4140-00-350-018140340-6 INTERCHANGEABLE
Impeller,fan,centrifugal
The Dewey Electronics Corporation
5920-00-702-6694 INTERCHANGEABLE
Fuse,indicator Alarm
1560-00-785-916440103-5 INTERCHANGEABLE
Insulation,duct,aircraft
Arrowhead Products Corp
5920-00-857-8416 INTERCHANGEABLE
Fuse,indicator Alarm
5920-00-857-8417 INTERCHANGEABLE
Fuse,indicator Alarm
5920-00-857-8418 INTERCHANGEABLE
Fuse,indicator Alarm
5920-00-857-8909 INTERCHANGEABLE
Fuse,indicator Alarm
5920-00-857-8933 INTERCHANGEABLE
Fuse,indicator Alarm
Cross-Reference Index
Part NumberManufacturer
AA55509-012 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-55509 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
264-0963-010 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
GMT3-1/2 Cooper Bussmann, Llc Dba Cooper Industries (USA)
401 03.5 Littelfuse, Inc. (USA)
Related Parts
5920-00-068-7353INTERCHANGEABLE
FUSE,INDICATOR ALARM
5920-00-126-1873INTERCHANGEABLE
FUSE,INDICATOR ALARM
4140-00-350-0181INTERCHANGEABLE
IMPELLER,FAN,CENTRIFUGAL
40340-6
5920-00-702-6694INTERCHANGEABLE
FUSE,INDICATOR ALARM
1560-00-785-9164INTERCHANGEABLE
INSULATION,DUCT,AIRCRAFT
40103-5
5920-00-857-8416INTERCHANGEABLE
FUSE,INDICATOR ALARM
5920-00-857-8417INTERCHANGEABLE
FUSE,INDICATOR ALARM
5920-00-857-8418INTERCHANGEABLE
FUSE,INDICATOR ALARM
5920-00-857-8909INTERCHANGEABLE
FUSE,INDICATOR ALARM
5920-00-857-8933INTERCHANGEABLE
FUSE,INDICATOR ALARM
5920-00-901-9936INTERCHANGEABLE
FUSE,INDICATOR ALARM
5920-00-917-3538INTERCHANGEABLE
FUSE,INDICATOR ALARM

Frequently Asked Questions

What is NSN 5920-01-056-7256?

NSN 5920-01-056-7256 is a Fuse,indicator Alarm, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 5920 (No Item Name Available). Status: active.

What are the part numbers for NSN 5920-01-056-7256?

NSN 5920-01-056-7256 has 5 cross-referenced part numbers: AA55509-012 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), A-A-55509 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 264-0963-010 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), GMT3-1/2 (Cooper Bussmann, Llc Dba Cooper Industries), 401 03.5 (Littelfuse, Inc.).

What NSN replaces 5920-01-056-7256?

There are 12 known substitutes for 5920-01-056-7256: 5920-00-068-7353, 5920-00-126-1873, 4140-00-350-0181 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AA55509-012?

Key specifications for AA55509-012: Overall Length: 0.688 INCHES MAXIMUM IN; Interruption Indicator Method: GRASSHOPPER; Overall Height: 0.780 INCHES NOMINAL IN; Maximum Voltage Rating in Volts: 300.0 AC AND 300.0 DC. 8 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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