The Absorber,overvoltage, cataloged under National Stock Number 5920-01-506-5040, is classified within Federal Supply Class 5920 (Fuses, Arrestors, Absorbers, and Protectors) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Chromalox, Inc. Div Chromalox. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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.
| Parameter | Value |
|---|---|
| NSN | 5920-01-506-5040 |
| Primary Part Number | D-52559-01 ITEM 28 |
| Item Name | Absorber,overvoltage |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Chromalox, Inc. Div Chromalox |
| Status | ACTIVE |
| Voltage in Volts | 440.0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 0005-60049 | Chromalox, Inc. Div Chromalox (USA) |
| D-52559-01 ITEM 28 PRIMARY | Chromalox, Inc. Div Chromalox (USA) |
NSN 5920-01-506-5040 is a Absorber,overvoltage, manufactured by Chromalox, Inc. Div Chromalox, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-01-506-5040 has 2 manufacturer part numbers on file: 0005-60049 (Chromalox, Inc. Div Chromalox), D-52559-01 ITEM 28 (Chromalox, Inc. Div Chromalox).
1 possible match (shared part number, not a government interchangeability claim): 5920-01-546-6229. Verify interchangeability with system specifications before substitution.
Key specifications for D-52559-01 ITEM 28: Voltage in Volts: 440.0; Special Features: MFG NAME: SNUBBER 440VAC VAC; End Item Identification: CONTROL OIL SVC HTR CONT 4239-90030; CONTROL F.O. TRANSFER HTR 4239-90031; CONTROLLER, HEATER 4239-90032. 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.