PartsTable TECHNICAL DATA SHEET

NSN 6110-01-556-0840Government record, cited

Panel, Control, Electrical-Electro6110-01-556-0840

NSN 6110-01-556-0840 · NIIN 015560840 · Part number 1321-3R4-B

Rockwell Automation Inc Dba Rockwell Automation · FSC 6110 — Electrical Control Equipment · FSG 61 — Electric Wire, Power, and Distribution Equipment · CAGE 4H047

Government record, cited

NSN 6110-01-556-0840 — this item is cataloged by the U.S. Government under National Stock Number 6110-01-556-0840. Manufacturer of record part number: 1321-3R4-B.

Also searched as 6110-01-556-0840 · 6110015560840 · NIIN 015560840 · 01-556-0840 · FSC 6110 Electrical Control Equipment · CAGE 4H047 · 1321-3R4-B · M-301658 C0 ITEM NO 50

Nearby stock numbers ← 6110-01-556-0799 · 6110-01-556-1224 Panel, Protection, Electrical Syst →

Features

Panel,control,electrical-Electro — FSC 6110
1 manufacturer part number on file
Manufacturer of record: Rockwell Automation Inc Dba Rockwell Automation

Identification

NSN: 6110-01-556-0840
NIIN: 015560840
FSC: 6110 — Electrical Control Equipment
FSG: 61 — Electric Wire, Power, and Distribution Equipment
Primary part number: 1321-3R4-B
Manufacturer: Rockwell Automation Inc Dba Rockwell Automation

General Description

The Panel,control,electrical-Electro, cataloged under National Stock Number 6110-01-556-0840, is classified within Federal Supply Class 6110 (Electrical Control Equipment) of the Electric Wire, Power, and Distribution Equipment group. The manufacturer of record is Rockwell Automation Inc Dba Rockwell Automation. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.

Technical Specifications

Parameter	Value
NSN	6110-01-556-0840
Primary Part Number	1321-3R4-B
Item Name	Panel,control,electrical-Electro
FSC / FSG	6110 / 61 — Electrical Control Equipment
Manufacturer	Rockwell Automation Inc Dba Rockwell Automation
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
1321-3R4-B PRIMARY	Rockwell Automation Inc Dba Rockwell Automation (USA)

Reference documents

Reference	Meaning
M-301658 C0 ITEM NO 50	7/2 Vendor item drawing reference Rockwell Automation Inc Dba Rockwell Automation

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 6110-01-556-0840?

NSN 6110-01-556-0840 is a Panel,control,electrical-Electro, manufactured by Rockwell Automation Inc Dba Rockwell Automation, classified under FSC 6110, Electrical Control Equipment. Status: active.

What part numbers are listed for NSN 6110-01-556-0840?

NSN 6110-01-556-0840 has 1 manufacturer part number on file: 1321-3R4-B (Rockwell Automation Inc Dba Rockwell Automation).

What are the specifications of 1321-3R4-B?

Key specifications for 1321-3R4-B: Part Name Assigned by Controlling Agency: REACTOR 3PH OPEN 4A A; End Item Identification: STANCHION SSC PANEL (3 DRIVE) M-301658-C0/ M-301658-D0. LOCKBAR SSC PANEL M-301658-E0. 0 specifications are documented in the U.S. Government catalog.

Is NSN 6110-01-556-0840 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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