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Technical Data Sheet
21277 ✓ Verified by PartsTable
Legrand · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Stranded for flexible routing, solid for conduit THHN/THWN dual-rated — check both tables
Ampacity depends on installation method
PRODUCT OVERVIEW

The CAPACITOR,FIXED,ELECTROLYTIC is a Legrand cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include special_features: BUSS FUSE, end_item_identification: CONTROLLER,MOTOR; LOGISTICS SUPPORT VESSEL, continuous_current_rating_in_amps: 7.000, circuit_over-current_interruption_type: TIME DELAY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-949-0482, 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
MRO MRO_GENERAL 21277
NSN: 6145-00-949-0482
FSC: 6145
CAGE: 97324 — CHAMPLAIN CABLE LEEDS CORPORATION (USA)
SPECIFICATIONS
special_featuresBUSS FUSE
end_item_identificationCONTROLLER,MOTOR; LOGISTICS SUPPORT VESSEL
continuous_current_rating_in_amps7.000
circuit_over-current_interruption_typeTIME DELAY
NSN6145-00-949-0482
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 21277 · Legrand ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
CONDUCTOR QUANTITY: 2
VOLTAGE RATING: 300.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
CONDUCTOR FORM: STRANDED ALL CONDUCTORS
TEMP RATING: -20.0 CELSIUS AND 80.0 CELSIUS DEGC
STRAND AWG SIZE PER CONDUCTOR: 30 ALL CONDUCTORS
MATERIAL: COPPER CORE CONDUCTOR ALL CONDUCTORS
STRAND QUANTITY PER CONDUCTOR: 16 ALL CONDUCTORS
ROUND CONDUCTOR SIZE: 18 AWG ALL CONDUCTORS
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 (FLIS)
CONDUCTOR QUANTITY2
VOLTAGE RATING300.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
CONDUCTOR FORMSTRANDED ALL CONDUCTORS
TEMP RATING-20.0 CELSIUS AND 80.0 CELSIUS DEGC
STRAND AWG SIZE PER CONDUCTOR30 ALL CONDUCTORS
MATERIALCOPPER CORE CONDUCTOR ALL CONDUCTORS
STRAND QUANTITY PER CONDUCTOR16 ALL CONDUCTORS
ROUND CONDUCTOR SIZE18 AWG ALL CONDUCTORS
CONDUCTOR ARRANGEMENT AND QUANTITY2 SINGLES
MATERIALPLASTIC POLYVINYL CHLORIDE (PVC) FIRST POSITION JACKET CABLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
309GInterchangeable
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954137Interchangeable
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603T2Interchangeable
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1747Interchangeable
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416A4Interchangeable
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7099326Interchangeable
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LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21277?
21277 is a CAPACITOR,FIXED,ELECTROLYTIC manufactured by Legrand. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21277?
There are 16 known substitutes for 21277: 309G, 954137, 603T2 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21277?
21277 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-949-0482. This indicates validated use in U.S. government and defense supply chains.
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