Eaton MDL3800FK01P05Z03 Molded Case Breaker - UL Listed

Part Number: MDL3800FK01P05Z03
Manufacturer
Eaton
Part number
MDL3800FK01P05Z03

Quick Summary

Eaton Series C molded case circuit breaker is a reliable protector for power distribution in industrial panels. Engineers often face nuisance trips, equipment downtime, and costly field repairs when breakers are undersized or difficult to source. UL Listed certification confirms compliance with safety standards, and this MDL-frame device supports 600 Vac and 250 Vdc ratings, as well as 50/60 Hz operation, making it suitable for global installations. The three-pole design and 800 A rating deliver robust protection for motors and feeders, while optional line and load terminals simplify installation and upgrades. By combining precise protection with serviceability, this model supports predictable downtime, easier maintenance, and lower total cost of ownership in automation environments.

Product Information

Extended Description

MDL3800FK01P05Z03 Eaton: Eaton Series C complete molded case circuit breaker, MDL-frame, MDL, Electronic LS trip, 600A trip rating, Three-pole, 800A, 600 Vac, 250 Vdc, 65 kAIC at 240 Vac, 50 kAIC at 480 Vac, Optional line and load, 50/60 Hz, 600A
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
MDL3800FK01P05Z03
UPC
782116036837
Product Length/Depth
0.01 in
Product Height
0.01 in
Product Width
0.01 in
Product Weight
0.01 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Catalog Notes
TA801MA terminals
Type
Frame only
Amperage Rating
800 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T167
Circuit breaker type
MDL
Circuit breaker frame type
Frame only
Series
Series C
Terminals
Optional line and load
Frame
MDL
Rated permanent current
600A
Rating plug
800A fixed
Interrupt rating
65 kAIC at 240 Vac 50 kAIC at 480 Vac
Number of poles
Three-pole
Feature → Electronic LS trip provides fast, accurate fault detection and selective coordination, reducing unnecessary outages and extending equipment life. Business Impact → Minimizes unplanned downtime and protects sensitive loads, improving overall line reliability and maintenance planning in manufacturing and processing plants. Application → Ideal for motor feeders and power distribution panels where precise trip performance is essential. Feature → 800 A rated frame with 600 Vac / 250 Vdc ratings supports both AC and DC circuits, enabling a single protective solution across mixed load profiles. Business Impact → Simplifies procurement, reduces part numbers, and lowers inventory costs while maintaining safety margins for high-current applications. Application → Suitable for large motor starters, presses, and conveyor systems in automation lines. Feature → Interrupt ratings at 65 kAIC (240 Vac) and 50 kAIC (480 Vac) provide robust fault current withstand, enhancing system resilience. Business Impact → Improves short-circuit protection in switchgear and panelboards, reducing arc flash exposure and damage risk. Application → Applies to utility feeds, MCCs, and industrial automation cabinets with significant fault currents. Feature → Optional line and load terminals give installation flexibility and easier field upgrades without replacing the entire breaker. Business Impact → Accelerates panel reconfiguration and spare-part management, lowering maintenance downtime. Application → Useful in retrofit projects and modular panel designs where space and wiring topology vary. Feature → UL Listed certification and Series C G-frame compatibility ensure regulatory compliance and proven performance. Business Impact → Supports audit readiness, customer approvals, and reliable operation in regulated environments. Application → Widely adopted in factory floors, data centers, and process facilities needing compliant protection. Feature → Access to Eaton’s time-current curves and technical literature (downloads) aids proper coordination and selection. Business Impact → Improves design accuracy, reduces over- and under-protection, and speeds up engineering reviews. Application → Recommended for engineering studies and protection scheme development in automation projects.

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FAQs

MDL3800FK01P05Z03 uses the MDL frame and supports optional line and load terminals, enabling flexible wiring in standard panelboards. It is designed for three-pole configuration and aligns with Series C mounting conventions, simplifying retrofits and new installations alike.
This breaker is rated for 600 Vac and 250 Vdc with an 800 A continuous rating. It provides 65 kAIC interrupt rating at 240 Vac and 50 kAIC at 480 Vac, ensuring strong fault-current protection for heavy-load industrial applications.
The T167 trip type indicates an electronic LS (long-time/short-time) protection scheme within the Series C framework, designed for reliable coordination and selective tripping under overload and short-circuit conditions.
Yes, the unit is UL Listed and supports operation at both 50 and 60 Hz, making it suitable for global installations and compliance with common electrical protection standards.
Ideal for industrial panels, motor control centers, and critical power feeds in manufacturing and processing facilities. Its three-pole design, high current rating, and robust interrupt capabilities support reliable protection for motors, conveyors, and automation racks.