The Ballast,lamp, cataloged under National Stock Number 6250-01-458-5780, is classified within Federal Supply Class 6250 (Ballasts, Lampholders, and Starters) of the Lighting Fixtures and Lamps group. The manufacturer of record is Big Beam Emergency Systems, Inc Div Siltron Emergency Systems. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6250-01-458-5780 |
| Primary Part Number | EFB-40 |
| Item Name | Ballast,lamp |
| FSC / FSG | 6250 / 62 — Ballasts, Lampholders, and Starters |
| Manufacturer | Big Beam Emergency Systems, Inc Div Siltron Emergency Systems |
| Status | ACTIVE |
| Terminal Quantity | 2 |
| Terminal Location and Quantity | 2 ONE END |
| Current Type | AC/DC |
| Lamp Wattage Rating in Watts | 40.0 |
| Terminal Type | WIRE LEAD |
| Starting Characteristic | RAPID |
| Starter | NOT REQUIRED |
| Lamp Type Accommodated | ENERGY EFFICIENT |
| Lamp Accommodation Quantity | 2 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EFB-40 PRIMARY | Big Beam Emergency Systems, Inc Div Siltron Emergency Systems (USA) |
NSN 6250-01-458-5780 is a Ballast,lamp, manufactured by Big Beam Emergency Systems, Inc Div Siltron Emergency Systems, classified under FSC 6250, Ballasts, Lampholders, and Starters. Status: active.
NSN 6250-01-458-5780 has 1 manufacturer part number on file: EFB-40 (Big Beam Emergency Systems, Inc Div Siltron Emergency Systems).
Key specifications for EFB-40: Overall Height: 1.500 INCHES NOMINAL IN; Terminal Quantity: 2; Terminal Location and Quantity: 2 ONE END; Current Type: AC/DC. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.