The Circuit Breaker, cataloged under National Stock Number 5925-01-589-1658, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5925-01-589-1658 |
| Primary Part Number | 5SY4111-7 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division |
| Status | ACTIVE |
| Pole Quantity | 1 |
| 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 |
|---|---|
| 5SY4111-7 PRIMARY | Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division (USA) |
| SY1557-S=WC1.A5 ITEM 8 | Siemens Energy and Automation Industrial and Logistics Systens Div (USA) |
| Reference | Meaning |
|---|---|
| 5SX2111-7 | 3/9 Design control — primary reference Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division |
NSN 5925-01-589-1658 is a Circuit Breaker, manufactured by Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-589-1658 has 2 manufacturer part numbers on file: 5SY4111-7 (Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division), SY1557-S=WC1.A5 ITEM 8 (Siemens Energy and Automation Industrial and Logistics Systens Div).
Key specifications for 5SY4111-7: Pole Quantity: 1; Special Features: END ITEM: CONTROL PANEL , CAPSTIN, VOLTAGE:120/277VAC AT 50/60 HZ, 65 VDC (UL) 250/440 VAC AT 50/60 HZ, 55 VDC 5 AMP: INTERRUPTING RATING 6 KILOAMPERE, 14 KILOAMPERE AT 120 VAC, 5 KILOAMPERE AT 277 (UL): TRIP SETTING 5 TO 10 X RATED CURRENT AMP: WIRE SIZE 14 TO 5 AWG (LOAD), 14 TO 4 AWG (LINE) 35 MM DIN RAIL MOUNTING: SIZE 18MM WIDE BY 62MM DEEP BY 90MM HIGH VDC; Part Name Assigned by Controlling Agency: CIRCUIT BREAKER. 1 specification is 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.