PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AR4.80Heater,thermal Release

Schneider Electric Usa, Inc. · NSN 5999-00-677-4066 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-677-4066 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-677-4066. Primary manufacturer part number: AR4.80.
Features
  • Heater,thermal Release — FSC 5999
  • Current Rating for Which Designed: 3.8 AMPERES MINIMUM AND 4.1 AMPERES MAXIMUM
  • Current Rating for Which Designed: 3.8 AMPERES MINIMUM AND 4.1 AMPERES MAXIMUM
  • 5 verified cross-references
  • Primary manufacturer: Schneider Electric Usa, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,thermal Release, cataloged under National Stock Number 5999-00-677-4066, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Schneider Electric Usa, Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-677-4066
Primary Part NumberAR4.80
Item NameHeater,thermal Release
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerSchneider Electric Usa, Inc.
StatusCANCELLED
Current Rating for Which Designed3.8 AMPERES MINIMUM AND 4.1 AMPERES MAXIMUM
Current Rating for Which Designed3.8 AMPERES MINIMUM AND 4.1 AMPERES MAXIMUM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight0.1000 lbs
Cube0.0009 cu ft
Verified Substitutes 2
No Item Name Available
2805-00-741-0952255 INTERCHANGEABLE
Ring Set,piston
Kaydon Ring & Seal Inc Dba Skf Precision Technologies
Cross-Reference Index
Part NumberManufacturer
AR4-80 Schneider Electric Usa, Inc. (USA)
AR4.80 Schneider Electric Usa, Inc. (USA)
AR4.80 PRIMARY Schneider Electric Usa, Inc. (USA)
640078905 Hyster-Yale Group, Inc. Dba Yale Materials Handling (USA)
AR4-8 Schneider Electric Usa, Inc. (USA)
Related Parts
5999-00-075-7463SUCCESSOR
NO ITEM NAME AVAILABLE
2805-00-741-0952INTERCHANGEABLE
RING SET,PISTON
255

Frequently Asked Questions

What is NSN 5999-00-677-4066?

NSN 5999-00-677-4066 is a Heater,thermal Release, manufactured by Schneider Electric Usa, Inc., classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-677-4066?

NSN 5999-00-677-4066 has 5 cross-referenced part numbers: AR4-80 (Schneider Electric Usa, Inc.), AR4.80 (Schneider Electric Usa, Inc.), AR4.80 (Schneider Electric Usa, Inc.), 640078905 (Hyster-Yale Group, Inc. Dba Yale Materials Handling), AR4-8 (Schneider Electric Usa, Inc.).

What NSN replaces 5999-00-677-4066?

There are 2 known substitutes for 5999-00-677-4066: 5999-00-075-7463, 2805-00-741-0952. Verify interchangeability with system specifications before substitution.

What are the specifications of AR4.80?

Key specifications for AR4.80: Current Rating for Which Designed: 3.8 AMPERES MINIMUM AND 4.1 AMPERES MAXIMUM; Overall Height: 1.344 INCHES NOMINAL IN; Overall Width: 0.500 INCHES NOMINAL IN; Overall Length: 1.875 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-677-4066 still in active supply?

NSN 5999-00-677-4066 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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