The Switch,pressure-Thermostatic, cataloged under National Stock Number 5930-01-233-9505, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Man Diesel & Turbo Ltd. Government technical data includes 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5930-01-233-9505 |
| Primary Part Number | 840A52 |
| Item Name | Switch,pressure-Thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Man Diesel & Turbo Ltd |
| Status | ACTIVE |
| Frequency in Hertz | 60.0 SECOND VOLTAGE |
| Contact Action Stimulus | DECREASE |
| Terminal Type | SCREW |
| Bulb Length | 1.968 INCHES NOMINAL IN |
| Proof Pressure | 1500.00 POUNDS PER SQUARE INCH LBS |
| Bulb Diameter | 0.786 INCHES NOMINAL IN |
| Contact Load Current Rating | 5.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE |
| Contact Load Current Rating | 15.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE |
| Mounting Method | IMMERSION WELL |
| Contact Adjustment Range | +3.00 TO 54.00 ACTUATION POINT POUNDS PER SQUARE INCH |
| Body Height | 4.763 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR |
| Temp Sensing Element Type | BULB |
| Pressure Switch Type | GAGE |
| Contact Adjustment Type | INTERNAL ACTUATION POINT SHAFT WITH SCALE |
| Features Provided | ELECTRICAL ACCESS PORT |
| Pressure Connector Type | PLAIN, THREADED INTERNAL SINGLE CONNECTION |
| Inside Diameter | 0.337 INCHES NOMINAL SINGLE CONNECTION IN |
| Nonpile-Up Contact Arrangement | 2 POLE, DOUBLE THROW, TWO POSITIONS MOMENTARY |
| Media for Which Designed | LIQUID |
| Contact Adjustability | ACTUATION POINT ADJUSTABLE |
| Contact Voltage Rating in Volts | 480.0 AC AT SEA LEVEL SECOND VOLTAGE |
| Contact Voltage Rating in Volts | 30.0 DC AT SEA LEVEL FIRST 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 |
|---|---|
| 840A52 | Man Diesel & Turbo Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 4140AR1H11CA3EE | 3/2 Design control — primary reference U.S. Government activity |
NSN 5930-01-233-9505 is a Switch,pressure-Thermostatic, manufactured by Man Diesel & Turbo Ltd, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-233-9505 has 1 manufacturer part number on file: 840A52 (Man Diesel & Turbo Ltd).
Key specifications for 840A52: Overall Height: 3.110 INCHES NOMINAL IN; Frequency in Hertz: 60.0 SECOND VOLTAGE; Contact Action Stimulus: DECREASE; Terminal Type: SCREW. 23 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.