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Marathon B302 Replacement

The Marathon B302 is a 1/4 HP, 1725 RPM, 115V single-phase split-phase drip-proof (ODP) fan and blower motor (48YZ frame, resilient-base mount). Below: the specs we verify before quoting, and what to check on your nameplate.

Verified specifications

Horsepower1/4 HP
Speed1725 RPM (4-pole)
Voltage115V
PhaseSingle-phase, split phase
Frequency60 Hz
Frame48YZ
EnclosureOpen Dripproof (ODP)
Full-load amps5.0 A
MountingResilient base
BearingsBall bearings
RotationCCW viewed opposite shaft end (selective)
Thermal protectionNone — external overload protection must be provided
Marathon model number48S17D2054
Weight14 lb (catalog)
CertificationsUL Recognized, CSA Certified

The catalog frame suffix is 48YZ; many distributors list it as 48Y or 48Z — same motor, the suffix describes mounting-hole provisions. Per the Marathon catalog the B302 has no built-in thermal overload, so external overload protection must be provided.

No replacement available? We can rebuild it

If your B302 is obsolete, has a long lead time, or is a custom build, our shop — Current Electric Motor Supply — repairs and rewinds motors up to 800 HP. Send the nameplate and we'll tell you honestly whether a rewind makes sense or a new replacement is the better move.

Confirming the right replacement

Before we quote, compare these fields on your failed motor's nameplate. If any of them differ, send us a photo of the nameplate and we'll match it exactly rather than guessing:

Other Marathon models

Need a Marathon B302?

Send the nameplate off your failed unit. We'll confirm the match and quote the B302 or a verified equivalent with availability and lead time.

Quote this motor