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CA542 — BATTERY POWER SUPPLY

✓ Government record, cited
— · PSU
PRODUCT OVERVIEW

CA542: BATTERY POWER SUPPLY.

The BATTERY POWER SUPPLY is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. This part is cataloged in the U.S. Government catalog under NSN 2940-01-266-1413, 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
CA542
NSN: 2940-01-266-1413
NIINs: 012661413, 015351989
FSC: 2940 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft
CAGE: 73370 — HONEYWELL INTERNATIONAL INC DBA HONEYWELL DIV CONSUMER PRODUCTS GROUP (USA)
SPECIFICATIONS
NSN2940-01-266-1413
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 CA542 MFR OEM Platinum
KEY FEATURES
•
DESIGN TYPE: NONREUSABLE
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS
DESIGN TYPENONREUSABLE
SPECIAL FEATURES13.500 IN. H; 12.093 IN. OD; 0.687 IN. ID TOP; 7.724 IN. ID BOTTOM; U/O DIAMOND,WHITE TRUCKS (DONALDSON P10-9726) IN
SUBSTITUTES & CROSS-REFERENCES 1
42976Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CA542?
CA542 is a BATTERY POWER SUPPLY.
What parts can replace CA542?
There is 1 known substitute for CA542: 42976. Substitute compatibility should be verified for your specific system.
What is the NSN for CA542?
CA542 is cataloged in the U.S. Government catalog under NSN 2940-01-266-1413. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.