The Arrester,electrical Surge, cataloged under National Stock Number 5920-01-176-4600, 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 C P Clare Corporation. Government technical data includes 5 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-01-176-4600 |
| Primary Part Number | UBD(278)-550 |
| Item Name | Arrester,electrical Surge |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | C P Clare Corporation |
| Status | ACTIVE |
| Usage Design | INDOOR AND OUTDOOR |
| Overall Diameter | 0.558 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN |
| Breakdown Voltage | 550.000 VOLTS MAXIMUM |
| Arrester Type | GAS |
| Body Material | GLASS |
| 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 |
|---|---|
| UBD(278)-550 PRIMARY | C P Clare Corporation (USA) |
| UBD(278)-550 | High Energy Devices, Llc (USA) |
| Reference | Meaning |
|---|---|
| UBD(278)-550 | 5/9 Secondary reference Cp Clare Corp North American Sales Operations |
| 3322931 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
NSN 5920-01-176-4600 is a Arrester,electrical Surge, manufactured by C P Clare Corporation, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-01-176-4600 has 2 manufacturer part numbers on file: UBD(278)-550 (C P Clare Corporation), UBD(278)-550 (High Energy Devices, Llc).
Key specifications for UBD(278)-550: Usage Design: INDOOR AND OUTDOOR; Overall Diameter: 0.558 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN; Breakdown Voltage: 550.000 VOLTS MAXIMUM; Arrester Type: GAS. 5 specifications are 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.