PartsTable
Technical Data Sheet
PartsTable / MRO / 1257I
1257I ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

CAPACITOR,VARIABLE,CERAMIC DIELE. Key specifications include color: WHITE SINGLE ACTUATOR, body_style: HOLE MOUNT, body_width: 1.500 INCHES NOMINAL IN, body_height: 0.937 INCHES NOMINAL IN, body_length: 2.437 INCHES NOMINAL IN, actuator_style: RECTANGULAR. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-422-2205, 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→ 1257I
NSN: 5930-00-422-2205
FSC: 5930
CAGE: 74545 — HUBBELL INCORPORATED (DELAWARE) DBA WIRING DEVICE-KELLEMS DIVISION (USA)
SPECIFICATIONS
colorWHITE SINGLE ACTUATOR
body_styleHOLE MOUNT
body_width1.500 INCHES NOMINAL IN
body_height0.937 INCHES NOMINAL IN
body_length2.437 INCHES NOMINAL IN
actuator_styleRECTANGULAR
inclosure_typeUNINCLOSED
mounting_methodTHREADED HOLE(S)
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
illuminated_actuator_colorWHITE SINGLE ACTUATOR
terminal_type_and_quantity2 SCREW
NSN5930-00-422-2205
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,CERAMIC DIELE TITLE COMPONENT PN 1257I MFR CAPACITOR,VARIABLE,CER
KEY FEATURES
•
THREAD QUANTITY PER INCH: 32
•
COLOR: WHITE SINGLE ACTUATOR
•
CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE: 15.000 AMPERES RESISTIVE AC
•
BODY STYLE: HOLE MOUNT
•
TERMINAL TYPE AND QUANTITY: 2 SCREW
•
NONPILE-UP CONTACT ARRANGEMENT: 1 POLE, SINGLE THROW, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT
•
ILLUMINATED ACTUATOR COLOR: WHITE SINGLE ACTUATOR
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
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)
THREAD QUANTITY PER INCH32
COLORWHITE SINGLE ACTUATOR
CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE15.000 AMPERES RESISTIVE AC
BODY STYLEHOLE MOUNT
TERMINAL TYPE AND QUANTITY2 SCREW
NONPILE-UP CONTACT ARRANGEMENT1 POLE, SINGLE THROW, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT
ILLUMINATED ACTUATOR COLORWHITE SINGLE ACTUATOR
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
INCLOSURE TYPEUNINCLOSED
MAXIMUM VOLTAGE RATING IN VOLTS120.0 AC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
MS17970Interchangeable
interchangeable cross-reference
interchangeable
5575Interchangeable
interchangeable cross-reference
interchangeable
12571Interchangeable
interchangeable cross-reference
interchangeable
NP28-0-6-0LInterchangeable
interchangeable cross-reference
interchangeable
12505Interchangeable
interchangeable cross-reference
interchangeable
22-10410-004-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1257I?
1257I is a CAPACITOR,VARIABLE,CERAMIC DIELE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1257I?
There are 19 known substitutes for 1257I: MS17970, 5575, 12571 and 16 more. Substitute compatibility should be verified for your specific system.
Is 1257I still available?
1257I is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026