The Switch,liquid Level, cataloged under National Stock Number 6680-01-504-2126, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Setra Systems, Inc. Dba Gems Sensors. Government technical data includes 8 specifications, 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-504-2126 |
| Primary Part Number | 145980 |
| Item Name | Switch,liquid Level |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Setra Systems, Inc. Dba Gems Sensors |
| Status | ACTIVE |
| Relay | INCLUDED |
| Actuation Method | BUOYANCY |
| Power Cable Length | 24.000 INCHES NOMINAL IN |
| Mounting Position | VERTICAL |
| Float Quantity | 1 |
| Liquid Type for Which Designed | WATER |
| Operating Temp Rating | 180.0 FAHRENHEIT NOMINAL DEGF |
| Electrical Connection Type | CABLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 145980 PRIMARY | Setra Systems, Inc. Dba Gems Sensors (USA) |
NSN 6680-01-504-2126 is a Switch,liquid Level, manufactured by Setra Systems, Inc. Dba Gems Sensors, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-504-2126 has 1 manufacturer part number on file: 145980 (Setra Systems, Inc. Dba Gems Sensors).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-548-9915, 5935-01-597-2007. Verify interchangeability with system specifications before substitution.
Key specifications for 145980: Relay: INCLUDED; Actuation Method: BUOYANCY; Power Cable Length: 24.000 INCHES NOMINAL IN; Mounting Position: VERTICAL. 8 specifications are documented in the U.S. Government catalog.
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.