The Heater,overload, cataloged under National Stock Number 4540-00-433-1604, is classified within Federal Supply Class 4540 (Waste Disposal Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Siemens Energy and Automation Inc Siemens Furnas Controls Div. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Heater,overload |
| FSC / FSG | 4540 — Waste Disposal Equipment (FSG 45) |
| Manufacturers | Siemens Energy and Automation Inc Siemens Furnas Controls Div (CAGE 23826) |
| Parameter | Value |
|---|---|
| NSN | 4540-00-433-1604 |
| Primary Part Number | H28 |
| Item Name | Heater,overload |
| FSC / FSG | 4540 / 45 — Waste Disposal Equipment |
| Manufacturer | Siemens Energy and Automation Inc Siemens Furnas Controls Div |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| H28 PRIMARY | Siemens Energy and Automation Inc Siemens Furnas Controls Div (USA) |
NSN 4540-00-433-1604 is a Heater,overload, manufactured by Siemens Energy and Automation Inc Siemens Furnas Controls Div, classified under FSC 4540, Waste Disposal Equipment. Status: active.
NSN 4540-00-433-1604 has 1 manufacturer part number on file: H28 (Siemens Energy and Automation Inc Siemens Furnas Controls Div).
3 possible matches (shared part number, not a government interchangeability claim): 5999-01-071-0370, 5340-01-156-6247, 6230-01-433-1396. Verify interchangeability with system specifications before substitution.
No hazard code in the DLA record (HMIC N). 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.