Eaton MDL3800FK01T05Z03 Molded Case Circuit Breaker - UL Listed
Part Number: MDL3800FK01T05Z03
Quick Summary
MDL3800FK01T05Z03 Molded Case Circuit Breaker protects industrial power systems from overload. Design teams often struggle with coordinating high-current protection, line/load terminations, and regional compliance across panel assemblies. UL Listed certification backs safety and reliability for critical panels, while the MDL frame supports robust protection in continuous duty systems. With an 800 A rating, 65 kAIC at 240 Vac, and optional line/load terminals, this device helps streamline panel design, reduce wiring complexity, and simplify maintenance in demanding environments. This solution pairs core protection with installation flexibility, aiding engineers to meet code requirements while keeping footprint and total-cost-of-ownership in check.
Product Information
Extended Description
MDL3800FK01T05Z03 Eaton: Eaton Series C complete molded case circuit breaker, MDL-frame, MDL, Electronic LS trip 310+, 600A, Three-pole, 800A, 65 kAIC at 240 Vac, 50 kAIC at 480 Vac, Optional Line/load, 24 Vdc left pigtail same side, 50/60 Hz
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
MDL3800FK01T05Z03
UPC
786689576554
Product Length/Depth
11 in
Product Height
8 in
Product Width
18 in
Product Weight
30 lb
Certifications
UL Listed
Amperage Rating
800 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T167
Circuit breaker type
MDL
Series
Series C
Terminals
Optional line and load
Undervoltage release
24 Vdc left pigtail same side
Frame
MDL
Rated permanent current
Adjustable
Rating plug
800A adjustable interchangeable
Interrupt rating
65 kAIC at 240 Vac 50 kAIC at 480 Vac
Number of poles
Three-pole
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Circuit Breakers Explained
Circuit Breakers Explained
Eaton Specification Sheet - MDL3800FK01T05Z03
Feature: High ampacity protection with 800 A rating ensures scalable overload protection for large feeders. Business Impact: Reduces the need for replacement SKUs as system loads grow, lowering TCO. Application: Data centers, MCCs, and heavy manufacturing panels. The MDL model’s rating plug is adjustable, enabling precise coordination with downstream devices, which lowers nuisance trips and improves uptime. Feature: 65 kAIC interrupt rating at 240 Vac and 50 kAIC at 480 Vac delivers fast fault clearance, limiting equipment damage and downtime in fault events. Application: Motors and drives protection in 3‑phase systems. Feature: Three-pole MDL frame with optional line/load terminals simplifies installation and reduces wiring errors, supporting faster commissioning. Application: New installs and retrofits in compact control panels. Feature: 24 Vdc undervoltage release on the left side provides safe remote-tripping options and improved machine safety. Application: Hazardous or critical duty lines with remote-control requirements. Feature: UL Listed certification establishes baseline safety compliance for panel builders and end users, streamlining procurement and commissioning. Application: U.S. and North American electrical installations; ensure cross-border compatibility where required.
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FAQs
This unit uses the MDL frame with optional line/load terminals and a 24 Vdc undervoltage release, enabling straightforward wiring, safe remote tripping, and simplified commissioning in three‑phase panels.
Amperage rating is 800 A with an interrupt rating of 65 kAIC at 240 Vac and 50 kAIC at 480 Vac; voltage rating is 600 Vac / 250 Vdc; three poles.
Yes, it is UL Listed, supporting safety compliance and simplifying procurement for U.S. and North American installations; always verify regional certification needs for non‑U.S. projects.
Yes, the product has a rated permanent current that is adjustable and uses an interchangeable 800 A rating plug to coordinate with downstream equipment.
Ideal for motor control centers, panelboards, and industrial control panels needing high‑current protection, flexible termination, and reliable interruption in both 240 Vac and 480 Vac environments.