The Circuit Breaker, cataloged under National Stock Number 5925-01-319-2434, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Olympus America Inc. Government technical data includes 30 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-319-2434 |
| Primary Part Number | 65A1288 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Olympus America Inc |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SERIES TRIP FIRST LOCATION |
| Internal Trip Release Configuration | SERIES/RELAY TRIP SECOND LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 250.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Actuator Position Designation | AT EACH POLE |
| Frequency in Hertz | 60.0 ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Width | 0.718 INCHES MINIMUM AND 0.782 INCHES MAXIMUM IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | MULTIPOLE-MULTIPLE ACTUATOR TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 125.0 ALL LOCATIONS |
| External Actuator Linkage Arrangement | ONE AND TWO LINKED |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 1.628 INCHES MINIMUM AND 1.692 INCHES MAXIMUM IN |
| Arc Quenching Method | MAGNETIC BLOWOUT |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 1.468 INCHES MINIMUM AND 1.532 INCHES MAXIMUM IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Trip Release Duty Cycle | CONTINUOUS SECOND LOCATION |
| Pole Quantity | 2 |
| Mounting Surface to Terminal End Distance | 1.898 INCHES MINIMUM AND 1.962 INCHES MAXIMUM IN |
| Maximum Continuous Load Current Rating Per Pole | 40.0 AMPERES AC ALL LOCATIONS |
| Trip Release Characteristic | INSTANTANEOUS ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 1000.0 AC ALL LOCATIONS |
| Nominal Thread Size | 0.138 INCHES IN |
| Body Length | 1.968 INCHES MINIMUM AND 2.032 INCHES MAXIMUM IN |
| Manual Actuator Type and Quantity | 2 TOGGLE |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Width | 0.718 INCHES MINIMUM AND 0.782 INCHES MAXIMUM IN |
| Inclosure Protection Type for Which Designed | DUSTPROOF AND FUNGUS PROOF |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC CASE |
| 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 |
|---|---|
| 65A1288 PRIMARY | Olympus America Inc (USA) |
| Reference | Meaning |
|---|---|
| 65A1288 | 3/9 Design control — primary reference Olympus Scientific Solutions Technologies Inc. |
| JA2-Z476-1 | 5/9 Secondary reference Eaton Corp Heinemann Products Commercial Controls Div |
| JA2-Z476-1W | 5/2 Secondary reference U.S. Government activity |
| JA2-K3K16Z84-32610A | 5/9 Secondary reference Eaton Corp Heinemann Products Commercial Controls Div |
| JA2-K3K16 | C/1 Advisory reference — outside the item-of-supply concept Eaton Corp Heinemann Products Commercial Controls Div |
| JA2-Z476-1 | 5/2 Secondary reference U.S. Government activity |
NSN 5925-01-319-2434 is a Circuit Breaker, manufactured by Olympus America Inc, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-319-2434 has 1 manufacturer part number on file: 65A1288 (Olympus America Inc).
Key specifications for 65A1288: Reset Method: MANUAL; Internal Trip Release Configuration: SERIES TRIP FIRST LOCATION; Internal Trip Release Configuration: SERIES/RELAY TRIP SECOND LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 250.0 AC ALL LOCATIONS. 30 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.