The Switch,thermostatic, cataloged under National Stock Number 5930-00-004-7750, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Master Control Systems Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-00-004-7750 |
| Primary Part Number | 720489A24VDC |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Master Control Systems Inc |
| Status | ACTIVE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | ELECTRON TUBE BASE |
| Mounting Method | PLUG-IN TERMINAL(S) |
| Style Designator | RECTANGULAR, OPEN FRAME |
| Temp Sensing Element Type | INTERNAL SENSOR |
| Body Length | 3.000 INCHES NOMINAL IN |
| Media for Which Designed | GAS OR LIQUID |
| Contact Adjustability | DEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE |
| Contact Voltage Rating in Volts | 24.0 DC AT SEA LEVEL SINGLE VOLTAGE |
| 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 |
|---|---|
| 720489A24VDC PRIMARY | Master Control Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 720489A | 5/1 Secondary reference Master Control Systems Inc |
NSN 5930-00-004-7750 is a Switch,thermostatic, manufactured by Master Control Systems Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-004-7750 has 1 manufacturer part number on file: 720489A24VDC (Master Control Systems Inc).
Key specifications for 720489A24VDC: Overall Height: 2.000 INCHES NOMINAL IN; Contact Action Stimulus: INCREASE; Terminal Type: ELECTRON TUBE BASE; Mounting Method: PLUG-IN TERMINAL(S). 9 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.