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5NR251 ✓ 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,CURRENT is a the manufacturer industrial component. Key specifications include body_length: 1.063 INCHES NOMINAL IN, inclosure_type: OPEN, mounting_method: TERMINAL AND UNTHREADED HOLE(S) SINGLE GROUP, frequency_rating: 50.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM SINGLE COMPONENT, body_outside_diameter: 3.500 INCHES NOMINAL IN, reliability_indicator: NOT ESTABLISHED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-01-138-9219, 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
5NR251
NSN: 5950-01-138-9219
FSC: 5950
CAGE: 12670 — SQUARE D CO ELECTROMAGNETIC INDUSTRIES DIV (USA)
SPECIFICATIONS
body_length1.063 INCHES NOMINAL IN
inclosure_typeOPEN
mounting_methodTERMINAL AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating50.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM SINGLE COMPONENT
body_outside_diameter3.500 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
mounting_hole_diameter1.562 INCHES NOMINAL SINGLE GROUP IN
winding_operating_current600.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
mounting_facility_quantity1 SINGLE GROUP
terminal_type_and_quantity2 WIRE LEAD
winding_function_and_quantity1 SECONDARY SINGLE COMPONENT
input-output_phase_relationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
NSN5950-01-138-9219
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,CURRENT TITLE COMPONENT PN 5NR251 MFR TRANSFORMER,CURRENT
KEY FEATURES
•
WINDING FUNCTION AND QUANTITY: 1 SECONDARY SINGLE COMPONENT
•
MOUNTING FACILITY QUANTITY: 1 SINGLE GROUP
•
TERMINAL TYPE AND QUANTITY: 2 WIRE LEAD
•
FREQUENCY RATING: 50.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM SINGLE COMPONENT
•
BODY LENGTH: 1.063 INCHES NOMINAL IN
•
INPUT-OUTPUT PHASE RELATIONSHIP: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
•
MOUNTING HOLE DIAMETER: 1.562 INCHES NOMINAL SINGLE GROUP IN
•
BODY OUTSIDE DIAMETER: 3.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
WINDING FUNCTION AND QUANTITY1 SECONDARY SINGLE COMPONENT
MOUNTING FACILITY QUANTITY1 SINGLE GROUP
TERMINAL TYPE AND QUANTITY2 WIRE LEAD
FREQUENCY RATING50.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM SINGLE COMPONENT
BODY LENGTH1.063 INCHES NOMINAL IN
INPUT-OUTPUT PHASE RELATIONSHIPSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
MOUNTING HOLE DIAMETER1.562 INCHES NOMINAL SINGLE GROUP IN
BODY OUTSIDE DIAMETER3.500 INCHES NOMINAL IN
WINDING OPERATING CURRENT600.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
RELIABILITY INDICATORNOT ESTABLISHED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
5N251Interchangeable
interchangeable cross-reference
interchangeable
PIDTEFC7.5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5NR251?
5NR251 is a TRANSFORMER,CURRENT.
What parts can replace 5NR251?
There are 2 known substitutes for 5NR251: 5N251, PIDTEFC7.5. Substitute compatibility should be verified for your specific system.
What is the NSN for 5NR251?
5NR251 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-01-138-9219. 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