Eaton MDLB3800A14T08 Molded Case Breaker - UL Listed
Part Number: MDLB3800A14T08
Quick Summary
The Eaton MDLB3800A14T08 molded case breaker protects industrial power systems by interrupting fault currents in panels and switchgear. Engineers often struggle with selecting the right trip characteristics and ensuring reliable protection under varying load conditions. UL Listed certification supports safety and performance, while its Series C MDL frame and T186 trip type enable predictable coordination in three-phase environments. In addition to robust protection, this device offers straightforward wiring with 2A-2B auxiliaries and a 24 Vdc undervoltage release, delivering strong business value through reduced downtime and streamlined maintenance.
Product Information
Extended Description
MDLB3800A14T08 Eaton: Eaton Series C complete molded case circuit breaker, MDL-frame, MDLB, Fixed thermal, fixed magnetic trip, Three-pole, 800A, 65 kAIC at 240 Vac, 50 kAIC at 480 Vac, 2A-2B same side right terminal, 24 Vdc same side left terminal, 50/60 Hz
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
MDLB3800A14T08
UPC
782116036806
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
Amperage Rating
800 A
Trip Type
T186
Circuit breaker type
MDLB
Circuit breaker frame type
Complete breaker
Auxiliary switch
2A-2B same side right terminal
Series
Series C
Undervoltage release
24 Vdc same side left terminal
Frame
MDL
Interrupt rating
65 kAIC at 240 Vac 50 kAIC at 480 Vac
Number of poles
Three-pole
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Multi-wire lugs product aid
Multi-wire lugs product aid
Multi-wire lugs product aid
Multi-wire lugs product aid
Multi-wire lugs product aid
Multi-wire lugs product aid
Multi-wire lugs product aid
Breaker service centers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Circuit breakers explained
Circuit breakers explained
Eaton Specification Sheet - MDLB3800A14T08
Eaton Specification Sheet - MDLB3800A14T08
Eaton Specification Sheet - MDLB3800A14T08
Eaton Specification Sheet - MDLB3800A14T08
Eaton Specification Sheet - MDLB3800A14T08
Selling Policy 25-000 - Distribution and Control Products and Services
High interrupt rating and current protection: With an 800 A amperage rating and fault interruption capacities of 65 kAIC at 240 Vac and 50 kAIC at 480 Vac, the MDLB3800A14T08 minimizes fault energy, protecting both personnel and equipment while enabling rapid sectionalization in feeders and motors. This translates to shorter downtime and improved plant availability in demanding industrial settings. Three-pole Series C MDLB design with fixed thermal and fixed magnetic trip (T186) ensures consistent protection and precise coordination in three-phase power distribution, reducing nuisance trips and improving control reliability in panels and MCCs. Advanced control options: the 24 Vdc undervoltage release paired with a 2A-2B auxiliary switch on the right-hand terminals provides enhanced remote signaling and safer control during startup sequences, cutting response times and enabling safer lockout/tagout workflows. Wiring efficiency and compatibility: the MDL frame with right-side terminals and left-side 24 Vdc release supports clean, mulit-wire terminations and quick field installation, lowering wiring errors and shortening commissioning. Documentation and support: backed by Eaton’s specification sheets and application notes, plus a one-year warranty (or 18 months from shipment), giving service teams clear guidance and predictable maintenance planning for long-term ROI.
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FAQs
MDLB3800A14T08 is a three-pole, Series C complete molded case breaker built on the MDL frame. It features right-side 2A-2B auxiliary contacts and a left-side 24 Vdc undervoltage release, simplifying wiring in MDL-based panels and facilitating straightforward replacement or upgrade without extensive panel rewiring.
Key specs include an 800 A amperage rating, 65 kAIC interrupt rating at 240 Vac, and 50 kAIC at 480 Vac. It uses a T186 trip type, is UL Listed, and provides three-pole protection with the MDLB designation, making it suitable for demanding three-phase distributions and MCCs.
Yes. Its high interrupt ratings, three-pole design, and Series C MDL framing are well suited for motor control centers and feeders in industrial facilities. The 24 Vdc undervoltage release and auxiliary contact aid in coordination with control circuits, enabling reliable startup sequences and protective interlocks in MCC environments.
Comprehensive documentation is available, including Eaton specification sheets and application notes referenced in the product data, as well as datasheets for time-current curves and series guidance. The product is UL Listed, and Eaton provides warranty terms (one year from installation or 18 months from shipment) to support maintenance planning.
The MDLB3800A14T08 carries Eaton’s one-year warranty from the installation date or eighteen months from shipment, whichever occurs first. In addition, Eaton offers service centers and access to the official datasheets, application notes, and product support resources to aid installation, troubleshooting, and lifecycle management.