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Technical Data Sheet
PartsTable / COMPONENT / D52-640
D52-640 ✓ Verified by PartsTable
— · MOTOR
WHAT YOU NEED TO KNOW
NEMA frame determines mounting bolt pattern TEFC for outdoor, ODP for dry indoor only
C-face vs foot-mount — different mounting
PRODUCT OVERVIEW

The D52-640 is a the manufacturer industrial 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 6115-00-081-2030, 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
D52-640
NSN: 6115-00-081-2030
FSC: 6115
CAGE: 93742 — DRS NAVAL POWER SYSTEMS INC DBA DRS POWER & CONTROL TECHNOLOGIES INC (USA)
SPECIFICATIONS
Part NumberD52-640
NSN6115-00-081-2030
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: D52-640 · OEM ⚠ VERIFY BEFORE ORDERING NEMA frame size determines mounting bolt pattern — not interchangeable. 56C ≠ 143T bolt pattern. C-face vs foot-mount vs flange — different mounting, same HP doesn't mean drop-in ✓ BROKER TIP TEFC = outdoor/washdown OK. ODP = dry indoor only. TENV = no external fan, explosion-proof areas. 1750 RPM = 4-pole (most common), 3450 RPM = 2-pole, 1150 RPM = 6-pole PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
EXCITOR TYPE: SEPARATELY EXCITED
•
FREQUENCY RATING: 50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
•
AMBIENT TEMP IN DEG CELSIUS: 25.0
•
PRIME MOVER IDENTIFYING NUMBER: NH220 MODEL NO.
•
LINE TO NEUTRAL VOLTAGE IN VOLTS: 110.0 AND 220.0 AND 120.0 AND 240.0
•
AC WATTAGE RATING: 75.0 KILOWATTS AND 100.0 KILOWATTS
TECHNICAL CHARACTERISTICS (FLIS)
EXCITOR TYPESEPARATELY EXCITED
FREQUENCY RATING50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
OVERALL HEIGHT72.000 INCHES NOMINAL IN
AMBIENT TEMP IN DEG CELSIUS25.0
PRIME MOVER IDENTIFYING NUMBERNH220 MODEL NO.
OVERALL WIDTH42.000 INCHES NOMINAL IN
LINE TO NEUTRAL VOLTAGE IN VOLTS110.0 AND 220.0 AND 120.0 AND 240.0
AC WATTAGE RATING75.0 KILOWATTS AND 100.0 KILOWATTS
IDENTIFYING NUMBER5SJ4444+21Y4 PART NO.
HOUSING TYPEINCLOSED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
55D6246-2Interchangeable
interchangeable cross-reference
interchangeable
MILG26727Interchangeable
interchangeable cross-reference
interchangeable
MB18Interchangeable
interchangeable cross-reference
interchangeable
D52-539Interchangeable
interchangeable cross-reference
interchangeable
MB15Interchangeable
interchangeable cross-reference
interchangeable
55D6246-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D52-640?
D52-640 is a D52-640.
What parts can replace D52-640?
There are 18 known substitutes for D52-640: 55D6246-2, MILG26727, MB18 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D52-640?
D52-640 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6115-00-081-2030. 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