Panel, Power Bus, Circuit Breaker6110-01-686-1903

NSN 6110-01-686-1903 · NIIN 016861903 · Part number 21D1538-2

Lockheed Martin Corporation Div Mfc · FSC 6110 — Electrical Control Equipment · FSG 61 — Electric Wire, Power, and Distribution Equipment · CAGE 622B7

Government record, cited

NSN 6110-01-686-1903 — this item is cataloged by the U.S. Government under National Stock Number 6110-01-686-1903. Manufacturer of record part number: 21D1538-2.

Also searched as 6110-01-686-1903 · 6110016861903 · NIIN 016861903 · 01-686-1903 · FSC 6110 Electrical Control Equipment · CAGE 622B7 · 21D1538-2

Nearby stock numbers ← 6110-01-686-1856 Control, Remote Switching · 6110-01-686-1968 Controller, Electrical →

Features

Panel,power Bus,circuit Breaker — FSC 6110
1 manufacturer part number on file
Manufacturer of record: Lockheed Martin Corporation Div Mfc

Identification

NSN: 6110-01-686-1903
NIIN: 016861903
FSC: 6110 — Electrical Control Equipment
FSG: 61 — Electric Wire, Power, and Distribution Equipment
Primary part number: 21D1538-2
Manufacturer: Lockheed Martin Corporation Div Mfc

General Description

The Panel,power Bus,circuit Breaker, cataloged under National Stock Number 6110-01-686-1903, is classified within Federal Supply Class 6110 (Electrical Control Equipment) of the Electric Wire, Power, and Distribution Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Mfc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts

Item Name	Panel,power Bus,circuit Breaker
FSC / FSG	6110 — Electrical Control Equipment (FSG 61)
Manufacturers	Lockheed Martin Corporation Div Mfc (CAGE 622B7)

Technical Specifications

Parameter	Value
NSN	6110-01-686-1903
Primary Part Number	21D1538-2
Item Name	Panel,power Bus,circuit Breaker
FSC / FSG	6110 / 61 — Electrical Control Equipment
Manufacturer	Lockheed Martin Corporation Div Mfc
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X
Unit of Issue	EA

Cross-Reference Index

Part Number	Manufacturer
21D1538-2 PRIMARY	Lockheed Martin Corporation Div Mfc (USA)

No interchangeability data on file.

Other items in FSC 6110 — Electrical Control Equipment

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

6110-00-000-0104

6110-00-000-0104 · Item name not on file

6110-00-001-1525

6110-00-001-1525 · Item name not on file

6110-00-001-1535

MODULE,OVERVOLTAGE PROTECTION

6110-00-001-1562

6110-00-001-1562 · Item name not on file

6110-00-001-2473

BRAKE,ELECTRIC

6110-00-001-3154

CONTACTOR,MAGNETIC

6110-00-001-4096

6110-00-001-4096 · Item name not on file

6110-00-001-4097

REGULATOR,VOLTAGE

Frequently Asked Questions

What is NSN 6110-01-686-1903?

NSN 6110-01-686-1903 is a Panel,power Bus,circuit Breaker, manufactured by Lockheed Martin Corporation Div Mfc, classified under FSC 6110, Electrical Control Equipment. Status: active.

What part numbers are listed for NSN 6110-01-686-1903?

NSN 6110-01-686-1903 has 1 manufacturer part number on file: 21D1538-2 (Lockheed Martin Corporation Div Mfc).

Is NSN 6110-01-686-1903 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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