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Technical Data Sheet
PartsTable / COMPONENT / 1220B-3
1220B-3 ✓ 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 TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include overall_width: 6.000 INCHES NOMINAL IN, inclosure_type: OPEN, overall_height: 6.125 INCHES NOMINAL IN, overall_length: 14.281 INCHES NOMINAL IN, mounting_method: SLOT SINGLE GROUP, frequency_rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-01-140-1246, 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
1220B-3
NSN: 5950-01-140-1246
FSC: 5950
CAGE: 83008 — STACO ENERGY PRODUCTS CO DBA STACO ENERGY PRODUCTS CO (USA)
SPECIFICATIONS
overall_width6.000 INCHES NOMINAL IN
inclosure_typeOPEN
overall_height6.125 INCHES NOMINAL IN
overall_length14.281 INCHES NOMINAL IN
mounting_methodSLOT SINGLE GROUP
frequency_rating60.0 HERTZ NOMINAL SINGLE COMPONENT
mounting_slot_width0.255 INCHES NOMINAL SINGLE GROUP IN
winding_operating_current5.0 AMPERES AC MINIMUM SINGLE COMPONENT ALL PRIMARY
winding_operating_voltage480.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY
mounting_facility_quantity4 SINGLE GROUP
terminal_type_and_quantity15 SCREW
adjustment_device_drive_typeSHAFT SINGLE COMPONENT
NSN5950-01-140-1246
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,POWER TITLE COMPONENT PN 1220B-3 MFR TRANSFORMER,POWER
KEY FEATURES
•
ADJUSTMENT DEVICE DRIVE TYPE: SHAFT SINGLE COMPONENT
•
TRANSFORMER WINDING CONNECTION TYPE: WYE-WYE
•
MAXIMUM TRANSFORMER POWER RATING: 4.2 KILOVOLT-AMPERE SINGLE COMPONENT
•
WINDING OPERATING CURRENT: 5.0 AMPERES AC MINIMUM SINGLE COMPONENT ALL PRIMARY
•
ADJUSTMENT METHOD AND QUANTITY: 1 ADJUSTABLE CONTROL SINGLE COMPONENT
•
FREQUENCY RATING: 60.0 HERTZ NOMINAL SINGLE COMPONENT
•
TERMINAL TYPE AND QUANTITY: 15 SCREW
•
INPUT-OUTPUT PHASE RELATIONSHIP: THREE PHASE TO THREE PHASE SINGLE COMPONENT
TECHNICAL CHARACTERISTICS (FLIS)
ADJUSTMENT DEVICE DRIVE TYPESHAFT SINGLE COMPONENT
TRANSFORMER WINDING CONNECTION TYPEWYE-WYE
MAXIMUM TRANSFORMER POWER RATING4.2 KILOVOLT-AMPERE SINGLE COMPONENT
WINDING OPERATING CURRENT5.0 AMPERES AC MINIMUM SINGLE COMPONENT ALL PRIMARY
ADJUSTMENT METHOD AND QUANTITY1 ADJUSTABLE CONTROL SINGLE COMPONENT
FREQUENCY RATING60.0 HERTZ NOMINAL SINGLE COMPONENT
TERMINAL TYPE AND QUANTITY15 SCREW
INPUT-OUTPUT PHASE RELATIONSHIPTHREE PHASE TO THREE PHASE SINGLE COMPONENT
WINDING OPERATING VOLTAGE480.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY
MOUNTING SLOT WIDTH0.255 INCHES NOMINAL SINGLE GROUP IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
1220-3Interchangeable
interchangeable cross-reference
interchangeable
1340Interchangeable
interchangeable cross-reference
interchangeable
24070Interchangeable
interchangeable cross-reference
interchangeable
18003Interchangeable
interchangeable cross-reference
interchangeable
6132704KInterchangeable
interchangeable cross-reference
interchangeable
500137Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1220B-3?
1220B-3 is a TRANSFORMER,POWER.
What parts can replace 1220B-3?
There are 17 known substitutes for 1220B-3: 1220-3, 1340, 24070 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1220B-3?
1220B-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-01-140-1246. 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