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66D44458 ✓ 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 66D44458 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 6115-00-081-2036, 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
66D44458
NSN: 6115-00-081-2036
FSC: 6115
CAGE: 98749 — SACRAMENTO AIR LOGISTICS CENTER SM-ALC/LIIL (USA)
SPECIFICATIONS
Part Number66D44458
NSN6115-00-081-2036
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: 66D44458 · 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
•
INCLOSURE TYPE: FULLY INCLOSED
•
AC WATTAGE RATING: 150.0 KILOWATTS AND 112.5 KILOWATTS
•
TEMP RISE RATING IN DEG CELSIUS FOR CONTINUOUS OPERATION: 60.0
•
EXCITOR TYPE: SEPARATELY EXCITED
•
CRANKING VOLTAGE IN VOLTS: 24.0
•
HOUSING TYPE: INCLOSED
•
PRIME MOVER MANUFACTURER NAME: CUMMINS ENGINE CO.
•
PRIME MOVER IDENTIFYING NUMBER: NRTO-6-B1 MODEL NO.
TECHNICAL CHARACTERISTICS (FLIS)
INCLOSURE TYPEFULLY INCLOSED
AC WATTAGE RATING150.0 KILOWATTS AND 112.5 KILOWATTS
TEMP RISE RATING IN DEG CELSIUS FOR CONTINUOUS OPERATION60.0
EXCITOR TYPESEPARATELY EXCITED
CRANKING VOLTAGE IN VOLTS24.0
HOUSING TYPEINCLOSED
PRIME MOVER MANUFACTURER NAMECUMMINS ENGINE CO.
PRIME MOVER IDENTIFYING NUMBERNRTO-6-B1 MODEL NO.
LINE TO NEUTRAL VOLTAGE IN VOLTS240.0 AND 120.0 AND 220.0 AND 110.0
AMBIENT TEMP IN DEG CELSIUS25.0
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
55D6246-2Interchangeable
interchangeable cross-reference
interchangeable
MB16Interchangeable
interchangeable cross-reference
interchangeable
D52-640Interchangeable
interchangeable cross-reference
interchangeable
MILG26727Interchangeable
interchangeable cross-reference
interchangeable
MB18Interchangeable
interchangeable cross-reference
interchangeable
D52-539Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 66D44458?
66D44458 is a 66D44458.
What parts can replace 66D44458?
There are 17 known substitutes for 66D44458: 55D6246-2, MB16, D52-640 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 66D44458?
66D44458 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6115-00-081-2036. 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