Eaton MDL3800Z03 Molded Case Circuit Breaker - UL Listed

Part Number: MDL3800Z03
Manufacturer
Eaton
Part number
MDL3800Z03

Quick Summary

MDL3800Z03 molded case circuit breaker provides reliable overcurrent protection for industrial control panels and motor loads. This model balances high current capacity with compact enclosure space, reducing panel footprint while maintaining safety margins. For engineers, a common challenge is selecting a device that meets demanding uptime targets without complicating wiring or service. Key certifications include UL Listed, reflecting safety compliance, and Eaton’s support for compatible accessories like TA801MA terminals, which streamline installation. In regional deployments, buyers also consider CE and IP-related requirements; this product is designed to integrate smoothly with standard electrical infrastructure. The result is a robust, scalable protection solution that supports efficient commissioning, easier maintenance, and long-term reliability.

Product Information

Extended Description

MDL3800Z03 Eaton: Eaton Series C complete molded case circuit breaker, MDL-frame, MDL, Fixed thermal, fixed magnetic trip, Three-pole, 800A, 600 Vac, 250 Vdc, 65 kAIC at 240 Vac, 50 kAIC at 480 Vac, Optional line and load, 50/60 Hz
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
MDL3800Z03
UPC
782116063918
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
Amperage Rating
800 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T186
Circuit breaker type
MDL
Circuit breaker frame type
Complete breaker
Series
Series C
Terminals
Optional line and load
Frame
MDL
Interrupt rating
65 kAIC at 240 Vac 50 kAIC at 480 Vac
Number of poles
Three-pole
Feature → Business Impact → Application: The MDL frame delivers 800 A at 600 Vac and 250 Vdc, enabling higher-load protection without added equipment, which translates to fewer devices in parallel and improved space efficiency in control panels. This supports cost reduction per circuit and faster installation in motor and power distribution panels. Feature → Business Impact → Application: Fixed thermal and fixed magnetic trip (Trip Type T186) provide fast, predictable coordination for overload and short-circuit events, improving overall system reliability and reducing unplanned downtime in manufacturing lines. Feature → Business Impact → Application: Three-pole configuration with Series C and MDL frame ensures consistent phase protection for three-phase systems, simplifying wiring schemes and improving fault tracing during maintenance. Feature → Business Impact → Application: Optional line and load terminals (TA801MA compatibility) streamline field wiring and enable plug-in expansion, lowering commissioning time and improving field service efficiency. Feature → Business Impact → Application: UL Listed certification and compatibility with industry-standard accessories help maintain regulatory compliance and simplify supplier audits, supporting long-term procurement stability and reduced risk across multi-site deployments. Feature → Business Impact → Application: The compact MDL enclosure design reduces panel footprint, enabling more flexible layout in compact machines or conveyors while preserving thermal performance and safety margins.

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FAQs

MDL3800Z03 supports optional TA801MA line and load terminals, enabling straightforward wiring in three-pole panels. This compatibility reduces field modification time, ensures secure terminations, and simplifies future expansion or maintenance in electrical switchgear.
The MDL3800Z03 is rated for 800 A with a voltage rating of 600 Vac and 250 Vdc. It provides interrupt ratings of 65 kAIC at 240 Vac and 50 kAIC at 480 Vac, and utilizes a fixed thermal-magnetic trip (T186) for robust protection against overloads and short circuits.
Yes. With a three-pole MDL frame and fixed magnetic trip, the MDL3800Z03 is well-suited for motor protection in industrial applications. Its 800 A capacity and high interrupt ratings support reliable starting and stopping of large motors, while the Series C design helps coordinate with protective devices in motor control centers.
This product is UL Listed, ensuring compliance with safety standards for molded case circuit breakers. While regional requirements vary, UL Listed devices are widely accepted in many markets. Always verify additional regional certifications (such as CE) for your specific installation location and enclosure requirements.
Eaton provides a warranty under policy 25-000, lasting one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, use Eaton service centers and approved accessories to preserve performance, minimize downtime, and maximize long-term return on investment.