The Switch,liquid Level, cataloged under National Stock Number 5930-01-079-1775, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Setra Systems, Inc. Dba Gems Sensors. Government technical data includes 26 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5930-01-079-1775 |
| Primary Part Number | LS-50957 |
| Item Name | Switch,liquid Level |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Setra Systems, Inc. Dba Gems Sensors |
| Status | ACTIVE |
| Relay | NOT INCLUDED |
| Actuation Method | BUOYANCY |
| Power Cable Length | 24.000 INCHES MINIMUM AND 26.000 INCHES MAXIMUM IN |
| Phase | SINGLE SECOND OPERATING POWER RQMT |
| Phase | SINGLE THIRD OPERATING POWER RQMT |
| Phase | SINGLE FIRST OPERATING POWER RQMT |
| AC Voltage Rating | 30.0 VOLTS MAXIMUM FIRST OPERATING POWER RQMT |
| AC Voltage Rating | 120.0 VOLTS MAXIMUM SECOND OPERATING POWER RQMT |
| AC Voltage Rating | 240.0 VOLTS MAXIMUM THIRD OPERATING POWER RQMT |
| Current Rating at Maximum Rated Voltage | 0.08 AMPERES RESISTIVE LOAD |
| DC Voltage Rating | 153.0 VOLTS MAXIMUM SECOND OPERATING POWER RQMT |
| DC Voltage Rating | 333.0 VOLTS MAXIMUM THIRD OPERATING POWER RQMT |
| DC Voltage Rating | 40.0 VOLTS MAXIMUM FIRST OPERATING POWER RQMT |
| Mounting Method | FLANGE |
| Voltage Rating at Maximum Rated Current | 120.0 VOLTS |
| Contact Arrangement | SINGLE-POLE,DOUBLE THROW,NORMALLY OPEN |
| Mounting Position | VERTICAL |
| Maximum Current Rating | 0.17 AMPERES RESISTIVE LOAD |
| Float Quantity | 1 |
| Liquid Type for Which Designed | VARIOUS FUELS |
| Tank Insertion Length | 11.938 INCHES MINIMUM AND 12.062 INCHES MAXIMUM IN |
| Operating Temp Rating | 0.0 FAHRENHEIT MINIMUM AND 300.0 FAHRENHEIT MAXIMUM DEGF |
| Frequency Rating | 60.0 HERTZ MAXIMUM SECOND OPERATING POWER RQMT |
| Frequency Rating | 60.0 HERTZ MAXIMUM FIRST OPERATING POWER RQMT |
| Frequency Rating | 60.0 HERTZ MAXIMUM THIRD OPERATING POWER RQMT |
| Electrical Connection Type | CABLE |
| 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 |
|---|---|
| LS-50957 PRIMARY | Setra Systems, Inc. Dba Gems Sensors (USA) |
| Reference | Meaning |
|---|---|
| 50957 | C/1 Advisory reference — outside the item-of-supply concept Setra Systems, Inc. Dba Gems Sensors |
NSN 5930-01-079-1775 is a Switch,liquid Level, manufactured by Setra Systems, Inc. Dba Gems Sensors, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-079-1775 has 1 manufacturer part number on file: LS-50957 (Setra Systems, Inc. Dba Gems Sensors).
1 possible match (shared part number, not a government interchangeability claim): 6210-01-313-2429. Verify interchangeability with system specifications before substitution.
Key specifications for LS-50957: Relay: NOT INCLUDED; Actuation Method: BUOYANCY; Power Cable Length: 24.000 INCHES MINIMUM AND 26.000 INCHES MAXIMUM IN; Phase: SINGLE SECOND OPERATING POWER RQMT. 26 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.