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U355 Marathon Electric Motors
KKM Solutions is an independent parts distributor, not an authorized Marathon dealer — how we source.
Overview
Part number U355 from Marathon, listed in Electric Motors. Specifications on file: Catalog Number U355; Enclosure Type TEFC; Frame 256JM; Frame Material Rolled Steel. KKM Solutions quotes this part with pricing and availability confirmed per order.
Marathon U355 — Electric Motors. Specs: Model: 256TTFL4038 · Catalog Number: U355 · Weight: 321 lb. Quoted per order by KKM Solutions. Close-Coupled Pump Motor, 20 HP, 3 Ph, 60 Hz, 575 V, 1800 RPM, 256JM Frame, TEFC - Marathon catalog number U355 (ordering code 256TTFL4038). Marathon specifications: Phase: 3; Output HP: 20 Hp; Output KW: 14.9 kW; Voltage: 575 V; Speed: 1750 rpm; Service Factor: 1.15; Frame: 256JM; Thermal Protection: No Protection; Efficiency: 91 %; Ambient Temperature: 40 °C; Frequency: 60 Hz; Current: 20.4 A; Power Factor: 81; Duty: Continuous; Insulation Class: F; Design Code: B; KVA Code: G; Drive End Bearing Size: 6309; Opp Drive End Bearing Size: 6207; Enclosure: Totally Enclosed Fan Cooled; UL: Recognized; CSA: Y.
Specifications
| Catalog Number | U355 |
|---|---|
| Enclosure Type | TEFC |
| Frame | 256JM |
| Frame Material | Rolled Steel |
| Full Load Amps | 20.4 A |
| Horsepower | 20 HP |
| Model | 256TTFL4038 |
| Mounting | Rigid |
| Phase | 3 |
| Speed | 1800 RPM |
| Voltage | 575V |
| Weight | 321 lb |
Product details
| Manufacturer | Marathon |
|---|---|
| Manufacturer part number | U355 |
| Product category | Electric Motors |
| Published specifications | 12 attributes listed |
Request a quote for this part
Email orderdesk@kkmsolutions.com or call (825) 454-5367 for pricing and availability.
Frequently Asked Questions
How do I get pricing for U355?
This part is quoted on request, so no price is listed for it here. Send the quote form on this page with your quantity, or email orderdesk@kkmsolutions.com, and our order desk will reply with pricing and availability within 1 business day.
Who manufactures the U355?
U355 is made by Marathon and is listed in our Electric Motors category. KKM Solutions is an independent distributor, not an authorized Marathon dealer: we source the exact Marathon part number U355, and the quote confirms condition and lead time before you order.
Is the U355 new and genuine?
Parts we supply are new and genuine unless the quote expressly states otherwise. Where a part is new-old-stock, from excess inventory, refurbished or open-box, the quote says so before you approve it.
What warranty comes with the U355, and can I return it?
Parts we supply are warranted against manufacturing defects for 1 year from the date of delivery; where the manufacturer's own warranty is longer, the manufacturer's warranty applies. The warranty covers repair, replacement, or credit of the defective part and does not cover normal wear items, misapplication, improper installation, or consequential damages. Contact us within 30 days of delivery before returning anything — all returns need a return authorization from the order desk.
What is the lifecycle status of U355?
No published lifecycle status is on file for U355. Marathon lists whether a catalog number is current, superseded or end-of-life on its own product page, and our order desk confirms the status with the manufacturer at quote time, before you commit. Send the part number through the quote form on this page.
What are the key specifications of U355?
Key specifications include Catalog Number: U355; Enclosure Type: TEFC; Frame: 256JM; Frame Material: Rolled Steel. The full specification table on this page lists every published attribute for this part.
What voltage does U355 use?
Per the published specification for U355: Voltage: 575V. Confirm against the full specification table on this page, or ask our order desk to verify it with the manufacturer at quote time.
What is the power rating of U355?
Per the published specification for U355: Horsepower: 20 HP. Confirm against the full specification table on this page, or ask our order desk to verify it with the manufacturer at quote time.
How much does U355 weigh?
Per the published specification for U355: Weight: 321 lb. Confirm against the full specification table on this page, or ask our order desk to verify it with the manufacturer at quote time.
How quickly can U355 ship?
Lead time for U355 is quoted per order and confirmed on your quote, which our order desk sends within 1 business day. For a line-down emergency, call the 24/7 order desk at (825) 454-5367.
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