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HMDL3350L - 350Amp Circuit Breaker

  • 350 Amp
  • 35k @ 600VAC; 65k @ 480VAC; 100k @ 240VAC
  • 3 Pole
Circuit BreakersSKU: HMDL3350L

Purchase Options: New In Box

HMDL3350L - 350Amp Circuit Breaker Description

HMDL3350L - 350Amp Circuit Breaker

The Eaton HMDL3350L is a 350-amp, three-pole molded case circuit breaker from the Eaton Series C family, designed around the MDL frame for applications requiring the correct electrical ratings and physical configuration. Whether you're maintaining existing equipment or replacing a breaker in a legacy system, the HMDL3350L offers clearly defined specifications that make compatibility easier to evaluate.

Key Features and Benefits

  • 350A amperage rating – Matches compatible electrical systems that require a 350-amp molded-case circuit breaker.
  • Three-pole configuration – Designed for equipment requiring a three-pole breaker arrangement.
  • Eaton Series C design – Part of the established Series C molded case circuit breaker family.
  • HMDL breaker type – Provides an important identifier when matching an existing breaker or compatible electrical equipment.
  • MDL frame – Helps maintenance personnel confirm the required frame configuration and physical compatibility.
  • T186 trip type – A key specification to verify when selecting a form, fit, and functional replacement.
  • Complete breaker configuration – Identified by the manufacturer as a complete molded case circuit breaker.
  • 50–60 Hz frequency rating – Suitable for compatible electrical systems operating within this frequency range.

Technical Specifications

  • Manufacturer: Eaton
  • Catalog Number: HMDL3350L
  • Product Name: Eaton Series C Complete Molded Case Circuit Breaker
  • Product Type: Molded Case Circuit Breaker
  • Series: Series C
  • Circuit Breaker Type: HMDL
  • Frame: MDL
  • Frame Type: Complete Breaker
  • Amperage Rating: 350 A
  • Number of Poles: Three-pole
  • Trip Type: T186
  • Frequency Rating: 50–60 Hz
  • Terminals: Included both Line and Load
  • Interrupt Rating at 240 VAC: 100 kAIC
  • Interrupt Rating at 480 VAC: 65 kAIC
  • Product Length/Depth: 18 in.
  • Product Height: 8 in.
  • Product Width: 11 in.
  • Product Weight: 20 lb
  • Certification: UL Listed

Material Compliance and Certifications

The Eaton HMDL3350L is UL Listed, an important consideration when verifying the breaker against the requirements of compatible equipment and the applicable installation. No additional material-compliance designations were included in the supplied manufacturer specifications, so project-specific environmental or material requirements should be independently confirmed when applicable.

Where It Works Best

The HMDL3350L is best suited to maintenance and replacement applications involving compatible electrical distribution equipment designed for an Eaton Series C HMDL breaker with an MDL frame. It is particularly relevant when servicing legacy installations, where maintaining the specified breaker configuration is more important than changing the equipment design.


Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.

Eaton®, Cutler-Hammer®, Westinghouse®, Challenger®, Bussmann®, Edison®, Edison Fuse®, GTE Sylvania®, Crouse-Hinds®, and Cooper® are registered trademarks of Eaton Corporation plc. Products sold are surplus, used, or refurbished and are NOT supplied by Eaton Corporation plc or its affiliates.

Specifications

  • Width:8.25
  • Height:16.0
  • Depth:4.06
  • Poles:3
  • Amperes:350
  • A.I.C. Rating & Volts:35k @ 600VAC; 65k @ 480VAC; 100k @ 240VAC
  • Type:HMDL
  • Approx Dimensions:8.25"W x 16.00"H x 4.06"D
  • Additional Notes:Thermal-magnetic circuit breaker with interchangeable trip unit. 40°C rated. HACR rated. This item includes line and load terminals. - discontinued by the Manufacturer

Returns are easy

You may return unused items within 30 days of delivery for a full refund.

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CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).

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