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Technical Data Sheet
A391 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The PANEL,POWER DISTRIBUTION is a the manufacturer power supply unit built for continuous operation in enterprise server and storage platforms. Key specifications include phase: THREE INPUT, material: STEEL OVERALL, end_style: SPRING END,GROUND BOTH ENDS, blade_type: BACKWARD CURVE, duty_cycle: CONTINUOUS, hub_length: 1.375 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-683-8554, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
A391
NSN: 4320-00-683-8554
FSC: 4320
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
phaseTHREE INPUT
materialSTEEL OVERALL
end_styleSPRING END,GROUND BOTH ENDS
blade_typeBACKWARD CURVE
duty_cycleCONTINUOUS
hub_length1.375 INCHES NOMINAL IN
design_typeSINGLE WIDTH
keyway_typeSTRAIGHT
hub_locationSINGLE INSIDE OFFSET
hub_quantity1
keyway_depth0.098 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
keyway_width0.188 INCHES NOMINAL IN
NSN4320-00-683-8554
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PANEL,POWER DISTRIBUTION TITLE COMPONENT PN A391 MFR PANEL,POWER DISTRIBUTI
KEY FEATURES
KEYWAY DEPTH: 0.098 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
BLADE TYPE: BACKWARD CURVE
KEYWAY TYPE: STRAIGHT
MATERIAL: NICKEL ALLOY
KEYWAY QUANTITY: 1
BLADE QUANTITY: 5
OVERALL DIAMETER: 4.812 INCHES NOMINAL IN
KEYWAY LENGTH: 1.375 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Server power supply replacement (failed or degraded)
  • Redundant power upgrade for high-availability
  • Power capacity upgrade for GPU or expansion configurations
  • Hot-swap power maintenance in production environments
  • Spare inventory for break-fix operations
TECHNICAL CHARACTERISTICS (FLIS)
KEYWAY DEPTH0.098 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
BLADE TYPEBACKWARD CURVE
KEYWAY TYPESTRAIGHT
MATERIALNICKEL ALLOY
KEYWAY QUANTITY1
BLADE QUANTITY5
OVERALL DIAMETER4.812 INCHES NOMINAL IN
KEYWAY LENGTH1.375 INCHES NOMINAL IN
HUB LOCATIONSINGLE INSIDE OFFSET
DESIGN TYPESINGLE WIDTH
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
A39-1Interchangeable
interchangeable cross-reference
interchangeable
A200Interchangeable
interchangeable cross-reference
interchangeable
45000209Interchangeable
interchangeable cross-reference
interchangeable
9781-314Interchangeable
interchangeable cross-reference
interchangeable
DM-655Interchangeable
interchangeable cross-reference
interchangeable
A673Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A391?
A391 is a PANEL,POWER DISTRIBUTION.
What parts can replace A391?
There are 13 known substitutes for A391: A39-1, A200, 45000209 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A391?
A391 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-683-8554. This indicates validated use in U.S. government and defense supply chains.
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