The Switch,rotary, cataloged under National Stock Number 5930-01-309-5541, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Carson Mfg Co Inc. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-309-5541 |
| Primary Part Number | 3A157-2 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Carson Mfg Co Inc |
| Status | ACTIVE |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Terminal Type | WIRE LEAD |
| Contact Load Current Rating | 10.0 AMPERES RESISTIVE LOAD HIGHEST AC VOLTAGE RATING AT SEA LEVEL |
| Contact Load Current Rating | 5.0 AMPERES RESISTIVE LOAD LOWEST AC VOLTAGE RATING AT SEA LEVEL |
| Pole Quantity | 1 SINGLE SECTION FRONT |
| Individual Section Quantity | 1 |
| Contact Voltage Rating in Volts | 125.0 HIGHEST AC VOLTAGE RATING AT SEA LEVEL |
| Contact Voltage Rating in Volts | 277.0 LOWEST AC VOLTAGE RATING AT SEA LEVEL |
| Switch Actuator Indexing Position Quantity | 4 SINGLE ACTUATOR |
| Throw Quantity | 3 SINGLE SECTION REAR |
| 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 |
|---|---|
| 3A157-2 PRIMARY | Carson Mfg Co Inc (USA) |
NSN 5930-01-309-5541 is a Switch,rotary, manufactured by Carson Mfg Co Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-309-5541 has 1 manufacturer part number on file: 3A157-2 (Carson Mfg Co Inc).
Key specifications for 3A157-2: Switch Contact Basic Design: NONPILE-UP SYMMETRICAL; Terminal Type: WIRE LEAD; Contact Load Current Rating: 10.0 AMPERES RESISTIVE LOAD HIGHEST AC VOLTAGE RATING AT SEA LEVEL; Contact Load Current Rating: 5.0 AMPERES RESISTIVE LOAD LOWEST AC VOLTAGE RATING AT SEA LEVEL. 10 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.