EATON
CMDL3800F w/ MES3800LSI - 800Amp Circuit Breaker
CMDL3800F w/ MES3800LSI - 800Amp Circuit Breaker
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CMDL3800F w/ MES3800LSI - 800Amp Circuit Breaker
The CMDL3800F Eaton CMDL frame circuit breaker with MES3800LSI trip unit is an 800 Amp, 3-pole molded case circuit breaker used in larger commercial and industrial electrical systems where consistent protection and system coordination are important. In real-world applications, this breaker is typically found in main distribution panels, switchboards, and feeder circuits operating on 240V, 480V, or 600V AC systems.
In practice, this is the type of breaker you’ll usually see in established electrical infrastructure rather than new design changes. It’s commonly used for replacement or maintenance work in existing Eaton CMDL systems, where the goal is to keep the original panel layout and electrical setup intact. Because it’s built for CMDL-compatible equipment, it fits into existing assemblies without requiring modifications to the system.
Key Features and Benefits
- 800 Amp, 3-pole molded case circuit breaker for Eaton CMDL systems
- Designed for 240V, 480V, and 600V AC power distribution systems
- 100% rated for full-load operation in compliant installations
- MES3800LSI interchangeable trip unit for coordination flexibility
- High interrupting ratings: 65kA (240V), 50kA (480V), 25kA (600V)
- 3-pole design for simultaneous phase protection
- Includes load terminals for compatible CMDL assemblies
- Used in main service and feeder applications
- 40°C rated for defined operating conditions
- Built for use in properly rated electrical systems
Technical Specifications
- Catalog Number: CMDL3800F w/ MES3800LSI
- Product Type: Molded Case Circuit Breaker
- Frame Type: CMDL
- Amperage Rating: 800 Amps
- Poles: 3
- Voltage Rating: 240V / 480V / 600V AC
- Interrupting Rating: 65kA @ 240V; 50kA @ 480V; 25kA @ 600V
- Trip Unit: Interchangeable (MES3800LSI)
- Rating: 100% rated
- Temperature Rating: 40°C
- Includes: Load terminals
- Dimensions: 8.25"W x 16.00"H x 4.06"D
- Approx. Ship Weight: 35.00 lbs
Material Compliance and Certifications
The CMDL3800F Eaton molded case circuit breaker is intended for use in accordance with applicable UL standards for industrial electrical distribution equipment. It is designed for installation in Eaton-compatible CMDL frame assemblies and should be installed by qualified electrical personnel following all applicable electrical codes and manufacturer guidelines.
Where It Works Best
- Commercial and industrial power distribution systems
- Eaton CMDL switchboards and panelboards
- Main service and feeder circuit protection
- 240V, 480V, and 600V three-phase systems
- Facilities with higher electrical load demands
- Maintenance and replacement in existing CMDL installations
- Engineered distribution systems requiring trip coordination
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®, 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.
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