The Switch,liquid Level, cataloged under National Stock Number 5930-01-170-7371, 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 28 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5930-01-170-7371 |
| Primary Part Number | 68633 |
| 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 |
| Phase | SINGLE FIRST ALTERNATE OPERATING POWER RQMT |
| Phase | SINGLE SECOND ALTERNATE OPERATING POWER RQMT |
| Phase | SINGLE THIRD ALTERNATE OPERATING POWER RQMT |
| AC Voltage Rating | 240.0 VOLTS MAXIMUM THIRD ALTERNATE OPERATING POWER RQMT |
| AC Voltage Rating | 120.0 VOLTS MAXIMUM SECOND ALTERNATE OPERATING POWER RQMT |
| AC Voltage Rating | 50.0 VOLTS MAXIMUM FIRST ALTERNATE OPERATING POWER RQMT |
| Overall Diameter | 5.562 INCHES NOMINAL IN |
| Current Rating at Maximum Rated Voltage | 0.2 AMPERES RESISTIVE LOAD |
| DC Voltage Rating | 240.0 VOLTS MAXIMUM THIRD ALTERNATE OPERATING POWER RQMT |
| DC Voltage Rating | 120.0 VOLTS MAXIMUM SECOND ALTERNATE OPERATING POWER RQMT |
| DC Voltage Rating | 50.0 VOLTS MAXIMUM FIRST ALTERNATE OPERATING POWER RQMT |
| Mounting Method | FLANGE |
| Voltage Rating at Maximum Rated Current | 50.0 VOLTS |
| Contact Arrangement | SPST,NORMALLY OPEN,NORMALLY CLOSED |
| Mounting Position | VERTICAL |
| Maximum Current Rating | 1.0 AMPERES RESISTIVE LOAD |
| Connector Identification | 34770 |
| Float Effective Travel | 21.375 INCHES MINIMUM AND 21.625 INCHES MAXIMUM IN |
| Float Quantity | 4 |
| Liquid Type for Which Designed | HYDRAULIC OIL AND LUBRICATING OIL AND SEA WATER AND VARIOUS FUELS AND WATER |
| Tank Insertion Length | 51.438 INCHES MINIMUM AND 51.562 INCHES MAXIMUM IN |
| Connector Manufacturer Code | 04034 |
| Operating Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 250.0 FAHRENHEIT MAXIMUM DEGF |
| Mounting Dimensions | SIX 0.562 IN. DIA HOLES EQUALLY SPACED ON A 4.438 IN. DIA BOLT CIRCLE IN |
| Frequency Rating | 60.0 HERTZ NOMINAL FIRST ALTERNATE OPERATING POWER RQMT |
| Frequency Rating | 60.0 HERTZ NOMINAL SECOND ALTERNATE OPERATING POWER RQMT |
| 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-34768-3 | Setra Systems, Inc. Dba Gems Sensors (USA) |
| 68633 PRIMARY | Setra Systems, Inc. Dba Gems Sensors (USA) |
| Reference | Meaning |
|---|---|
| LS-34768-3/68633 | C/1 Advisory reference — outside the item-of-supply concept Setra Systems, Inc. Dba Gems Sensors |
NSN 5930-01-170-7371 is a Switch,liquid Level, manufactured by Setra Systems, Inc. Dba Gems Sensors, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-170-7371 has 2 manufacturer part numbers on file: LS-34768-3 (Setra Systems, Inc. Dba Gems Sensors), 68633 (Setra Systems, Inc. Dba Gems Sensors).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-454-7495. Verify interchangeability with system specifications before substitution.
Key specifications for 68633: Relay: NOT INCLUDED; Actuation Method: BUOYANCY; Phase: SINGLE FIRST ALTERNATE OPERATING POWER RQMT; Phase: SINGLE SECOND ALTERNATE OPERATING POWER RQMT. 28 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.