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H503 Marathon Electric Motors
KKM Solutions is an independent parts distributor, not an authorized Marathon dealer — how we source.
Overview
Part number H503 from Marathon, listed in Electric Motors. Specifications on file: Catalog Number H503; Enclosure Type TEFC-XP; Frame 449T; Frame Material Cast Iron. KKM Solutions quotes this part with pricing and availability confirmed per order.
Marathon H503 — Electric Motors. Specs: Model: 449TTGS7037 · Catalog Number: H503 · Weight: 3032 lb. Quoted per order by KKM Solutions. Explosion Proof Motor, 300 & 250 HP, 3 Ph, 60 & 50 Hz, 460 & 380 V, 1800 & 1500 RPM, 447/449T Frame, EPFC - Marathon catalog number H503 (ordering code 449TTGS7037). Marathon specifications: Phase: 3; Output HP: 300 & 250 Hp; Output KW: 224.0 & 187.0 kW; Voltage: 460 & 380 V; Speed: 1785 & 1485 rpm; Service Factor: 1.0 & 1.0; Frame: 447/449T; Thermal Protection: Thermostat; Efficiency: 95.4 & 95 %; Ambient Temperature: 40 °C; Frequency: 60 & 50 Hz; Current: 338 & 342 A; Power Factor: 87; Duty: Continuous; Insulation Class: F; Design Code: B; KVA Code: G; Drive End Bearing Size: NU319; Opp Drive End Bearing Size: 6318; Enclosure: Explosion Proof Fan cooled; UL: UL Listed; also, UL Certified for Canada; CSA: N.
Specifications
| Catalog Number | H503 |
|---|---|
| Enclosure Type | TEFC-XP |
| Frame | 449T |
| Frame Material | Cast Iron |
| Full Load Amps | 338 A |
| Horsepower | 300 HP |
| Model | 449TTGS7037 |
| Mounting | Rigid |
| Phase | 3 |
| Speed | 1800 RPM |
| Voltage | 460V |
| Weight | 3032 lb |
Product details
| Manufacturer | Marathon |
|---|---|
| Manufacturer part number | H503 |
| 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 H503?
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 H503?
H503 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 H503, and the quote confirms condition and lead time before you order.
Is the H503 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 H503, 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 H503?
No published lifecycle status is on file for H503. 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 H503?
Key specifications include Catalog Number: H503; Enclosure Type: TEFC-XP; Frame: 449T; Frame Material: Cast Iron. The full specification table on this page lists every published attribute for this part.
What voltage does H503 use?
Per the published specification for H503: Voltage: 460V. 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 H503?
Per the published specification for H503: Horsepower: 300 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 H503 weigh?
Per the published specification for H503: Weight: 3032 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 H503 ship?
Lead time for H503 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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