The Heater,thermal Release, cataloged under National Stock Number 5999-01-286-9303, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Rockwell Automation, Inc. Dba Rockwell Automation. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-286-9303 |
| Primary Part Number | W40 |
| Item Name | Heater,thermal Release |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Rockwell Automation, Inc. Dba Rockwell Automation |
| Status | ACTIVE |
| Current Rating for Which Designed | 2890.0 MILLIAMPERES MINIMUM AND 3670.0 MILLIAMPERES MAXIMUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | ZN |
| Weight | 0.0625 lbs |
| Cube | 0.0003 cu ft |
| Part Number | Manufacturer |
|---|---|
| W40 PRIMARY | Rockwell Automation, Inc. Dba Rockwell Automation (USA) |
NSN 5999-01-286-9303 is a Heater,thermal Release, manufactured by Rockwell Automation, Inc. Dba Rockwell Automation, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-286-9303 has 1 manufacturer part number on file: W40 (Rockwell Automation, Inc. Dba Rockwell Automation).
1 possible match (shared part number, not a government interchangeability claim): 5999-01-453-2144. Verify interchangeability with system specifications before substitution.
Key specifications for W40: End Item Identification: ALLEN BRADY 500 SERIES OVERLOAD RELAYS; Current Rating for Which Designed: 2890.0 MILLIAMPERES MINIMUM AND 3670.0 MILLIAMPERES MAXIMUM. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.