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Technical Data Sheet
PartsTable / COMPONENT / 903551-1
903551-1 ✓ Verified by PartsTable
— · PSU
WHAT YOU NEED TO KNOW
Always quote matching pair — mixed wattage causes throttling Platinum/Titanium = higher efficiency = lower power cost over time
AC or DC input? Verify customer site power
PRODUCT OVERVIEW

The POWER SUPPLY is a the manufacturer power supply unit built for continuous operation in enterprise server and storage platforms. Key specifications include overall_width: 4.850 INCHES NOMINAL IN, overall_height: 3.440 INCHES NOMINAL IN, overall_length: 4.970 INCHES NOMINAL IN, output_current_rating: 1000.0 DC AMPERES NOMINAL SECOND POWER OUTPUT, output_voltage_rating: 24.5 DC VOLTS NOMINAL SECOND POWER OUTPUT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6130-00-573-0622, 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
903551-1
NSN: 6130-00-573-0622
FSC: 6130
CAGE: 70210 — HONEYWELL INTERNATIONAL INC. DIV AEROSPACE - TORRANCE (USA)
SPECIFICATIONS
overall_width4.850 INCHES NOMINAL IN
overall_height3.440 INCHES NOMINAL IN
overall_length4.970 INCHES NOMINAL IN
output_current_rating1000.0 DC AMPERES NOMINAL SECOND POWER OUTPUT
output_voltage_rating24.5 DC VOLTS NOMINAL SECOND POWER OUTPUT
NSN6130-00-573-0622
COMPONENT DIAGRAM
PULL TAB AIRFLOW —W PLATINUM 100-240V~ 50/60Hz OEM BACKPLANE CONN ~200 mm HOT-PLUG POWER SUPPLY | —W | Platinum AC input 100-240V | Redundant pair required | Match wattage in same chassis TITLE PSU —W PN 903551-1 MFR OEM Platinum
KEY FEATURES
•
OUTPUT CURRENT RATING: 1000.0 DC AMPERES NOMINAL SECOND POWER OUTPUT
•
OUTPUT VOLTAGE RATING: 28.5 DC VOLTS NOMINAL FIRST POWER OUTPUT
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)
OVERALL LENGTH4.970 INCHES NOMINAL IN
OUTPUT CURRENT RATING1000.0 DC AMPERES NOMINAL SECOND POWER OUTPUT
OVERALL HEIGHT3.440 INCHES NOMINAL IN
OUTPUT VOLTAGE RATING28.5 DC VOLTS NOMINAL FIRST POWER OUTPUT
OUTPUT CURRENT RATING2250.0 DC AMPERES NOMINAL FIRST POWER OUTPUT
OUTPUT VOLTAGE RATING24.5 DC VOLTS NOMINAL SECOND POWER OUTPUT
OVERALL WIDTH4.850 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
PA3321Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/3 ALLOY 2024 TMPR TInterchangeable
interchangeable cross-reference
interchangeable
533362Interchangeable
interchangeable cross-reference
interchangeable
23157Interchangeable
interchangeable cross-reference
interchangeable
B7580Interchangeable
interchangeable cross-reference
interchangeable
FWM23157Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 903551-1?
903551-1 is a POWER SUPPLY.
What parts can replace 903551-1?
There are 8 known substitutes for 903551-1: PA3321, AMS-QQ-A-200/3 ALLOY 2024 TMPR T, 533362 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 903551-1?
903551-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6130-00-573-0622. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026