Eaton MDL3350 Molded Case Circuit Breaker - UL Listed
Part Number: MDL3350
Quick Summary
MDL3350 Molded Case Circuit Breaker by Eaton provides dependable overcurrent protection for industrial power panels and machine controls. Engineers often struggle with panel space, wiring complexity, and downtime; this complete Series C MDL solution reduces footprint, streamlines wiring, and improves reliability. UL Listed certification supports safety compliance, while regional variants may carry CE marking in Europe and IP-rated enclosures for rugged environments. Designed for 50 to 60 Hz service, it handles up to 600 Vac / 250 Vdc with a 350 A rating, delivering predictable protection for modern automation architectures. By pairing robust protection with straightforward installation and Eaton's support ecosystem, it supports faster commissioning and lower lifecycle costs.
Product Information
Extended Description
MDL3350 Eaton: Eaton Series C complete molded case circuit breaker, MDL-frame, MDL, Complete breaker, Fixed thermal, Fixed magnetic trip type, Three-pole, 350 A, 600 Vac, 250 Vdc, 65 kAIC at 240 Vac, 50 kAIC at 480 Vac, 50/60 Hz
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
MDL3350
UPC
782114585948
Product Length/Depth
4.06 in
Product Height
8.25 in
Product Width
8.25 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
350 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T186
Circuit breaker type
MDL
Circuit breaker frame type
Complete breaker
Series
Series C
Frame
MDL
Frequency rating
50 to 60 Hz
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
StrandAble terminals product aid
StrandAble terminals product aid
StrandAble terminals product aid
StrandAble terminals product aid
StrandAble terminals product aid
StrandAble terminals product aid
StrandAble terminals product aid
Breaker service centers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Circuit breakers explained
Circuit breakers explained
Series C F-Frame molded case circuit breakers
Series C F-Frame molded case circuit breakers
Series C F-Frame molded case circuit breakers
Series C F-Frame molded case circuit breakers
Series C F-Frame molded case circuit breakers
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The MDL3350 delivers fixed thermal and fixed magnetic trips in a three-pole, 350 A MDRL-style package, enabling precise protection coordination and reducing nuisance trips in demanding panels; this translates to less downtime and fewer spare parts. Application: ideal for panel boards, machine control centers, and critical automation racks where reliable short-circuit protection is paramount. Feature → Business Impact → Application: With a 600 Vac / 250 Vdc rating and 50 to 60 Hz operation, the unit supports global distributions while maintaining consistent interrupt performance; this simplifies design validation and procurement across international facilities. Application: suitable for multinational manufacturing lines and distributed control architectures. Feature → Business Impact → Application: The Series C MDL frame offers a complete, plug-and-play breaker with a fixed trip system (T186), improving installation speed and reducing wiring complexity; this helps maintenance teams diagnose faults faster. Application: retrofit or upgrade projects in legacy control panels. Feature → Business Impact → Application: UL Listed certification provides safety compliance and audit readiness; integrated with Eaton’s ecosystem of accessories, including StrandAble terminals for flexible wiring. Application: panel designers aiming for compliant, scalable protection solutions. Feature → Business Impact → Application: Comprehensive technical documentation and catalog resources are readily available, accelerating engineering workflows and reducing design-cycle time in control-system projects.
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FAQs
For installation, mount the three-pole MDL3350 in an appropriate Eaton Series C panel compatible with the MDL frame. Wire terminals should be verified for the StrandAble or standard lugs, ensuring correct alignment with the fixed thermal and magnetic trip. Confirm voltage and frequency ratings (600 Vac, 50–60 Hz) and verify clearance for safe operation. Always follow local codes and Eaton's installation notes to minimize commissioning time.
The MDL3350 is a 350 A molded case circuit breaker rated for 600 Vac and 250 Vdc, with a T186 trip type. It operates at 50–60 Hz and provides 65 kAIC at 240 Vac and 50 kAIC at 480 Vac. It is a three-pole MDL frame device and belongs to Eaton's Series C family, designed for reliable protection in automation panels.
Yes, the MDL3350 is UL Listed, signifying compliance with recognized safety standards for molded case circuit breakers in North America. When deploying in other regions, verify regional catalog variants for CE marking or other certifications. Always reference Eaton’s documentation and local codes to ensure full regulatory alignment for your installation.
Best suited for industrial power distribution and machine control where reliability and space are critical. Use in panel boards, motor control centers, and automation racks requiring a three-pole, 350 A protection device with 600 Vac/250 Vdc ratings. The device’s fixed trip and Series C MDL frame simplify upgrades and maintain consistent protection across equipment.
The product follows Eaton’s policy SP 25-000, offering a one-year warranty from installation or an 18-month window from shipment, whichever comes first. For support, refer to Eaton’s service centers and downloadable resources such as application notes and catalogs to aid in installation, compatibility, and ongoing maintenance.