Eaton MDL3300WA0105S2905 Complete MCCB - UL Listed
Part Number: MDL3300WA0105S2905
Quick Summary
Eaton MDL3300WA0105S2905 complete molded case circuit breaker provides precise overcurrent protection for industrial power panels. Engineers often struggle with nuisance trips, downtime, and coordination across protection devices; this MCCB’s fixed thermal and magnetic trips help minimize those risks while delivering reliable selectivity. UL Listed certification ensures safety and compliance across panel installations, and Series C design aligns with broad industrial use. By combining robust protection with easy installation options and a compact footprint, it supports efficient panel design, reduced maintenance, and safer operation in demanding environments.
Product Information
Extended Description
MDL3300WA0105S2905 Eaton: Eaton Series C complete molded case circuit breaker, MDL-frame, MDL, Fixed thermal and magnetic trips, Three-pole, 300A, 600 Vac, 250 Vdc, 65 kAIC at 240 Vac, 50 kAIC at 480 Vac, 110-127 Vac GF or 208-240 Vac same side w/ right pigtail
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
MDL3300WA0105S2905
UPC
782116035908
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
Type
Complete breaker
Amperage Rating
300 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T186
Circuit breaker type
MDL
Circuit breaker frame type
Complete breaker
Auxiliary switch
1A-1B same side with left pigtail
Series
Series C
Shunt trip
110-127 Vac GF or 208-240 Vac same side right pigtail
Terminals
Without terminals
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
UL listed 100%-rated molded case circuit breakers
UL listed 100%-rated molded case circuit breakers
UL listed 100%-rated molded case circuit breakers
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Breaker service centers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Circuit breakers explained
Circuit breakers explained
MOEM MCCB product selection guide
MOEM MCCB product selection guide
MOEM MCCB product selection guide
MOEM MCCB product selection guide
MOEM MCCB product selection guide
Implementation of arc flash mitigating solutions at industrial manufacturing facilities
Feature: Fixed thermal and magnetic trips deliver fast, selective protection. Business impact: Reduces nuisance trips and equipment damage, improving overall uptime in manufacturing lines. Application: Ideal for industrial control panels requiring reliable protection without complex coordination. Feature: Six hundred volt AC and 250 volt DC ratings with a 300 A capacity. Business impact: Supports high-load circuits while maintaining safety margins, enabling smoother motor and load control in power distribution panels. Application: Suitable for large electrical panels in process industries where high current handling is mandatory. Feature: 65 kAIC interrupt rating at 240 Vac and 50 kAIC at 480 Vac. Business impact: Enhances fault current resilience and personnel safety during short-circuit events. Application: Critical in facilities with elevated fault levels, such as metalworking or data-center infrastructure. Feature: Shunt trip and auxiliary switch options (110-127 Vac GF or 208-240 Vac with right pigtail; 1A-1B on the left). Business impact: Enables remote shutdown and status indication for safer, automated protection schemes. Application: Facilitates protective interlocks and PLC-driven safety logic. Feature: Terminals are field-installed (without terminals) to support flexible termination methods. Business impact: Improves compatibility with various busbar and lug configurations, reducing procurement friction. Application: Enables seamless integration into existing panels and custom enclosures. Feature: UL Listed certification and comprehensive Eaton technical resources (datasheets, guides, and application notes). Business impact: Accelerates design approval and helps maintain regulatory compliance, cutting engineering time and risk. Application: Useful for spec-driven projects, audits, and procurement workflows.
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FAQs
This MDL-series MCCB uses the MDL frame and is designed for three-pole installations. It is supplied without terminals, so plan for field-installed termination methods. Use the auxiliary switch (1A-1B on the left) and ensure the shunt trip option (110-127 Vac GF or 208-240 Vac on the right) is wired according to the panel design and the 50 to 60 Hz supply. Confirm busbar alignment and panel clearance for safe operation.
Key specs include a 300 A amperage rating, 600 Vac and 250 Vdc voltage ratings, a Trip Type of T186, and an interrupt rating of 65 kAIC at 240 Vac and 50 kAIC at 480 Vac. It’s a three-pole MDL frame device operating at 50–60 Hz, with the auxiliary switch and shunt trip options specified for enhanced control and safety.
Yes. With 300 A capacity, high interrupt ratings (65 kAIC at 240 Vac / 50 kAIC at 480 Vac), and Series C design, it is well-suited for motor control centers and panel boards in manufacturing, processing, and utilities environments. The fixed thermal and magnetic trips provide reliable protection, while the shunt trip option supports remote safety strategies.
The unit is UL Listed, which supports compliance with safety standards in industrial installations. Eaton provides extensive documentation including application notes, product selection guides, and datasheets to support correct installation and optimization within MOEM MCCB projects.
Warranty terms follow Eaton Selling Policy 25-000, offering one year from the date of installation or eighteen months from the date of shipment, whichever occurs first. The robust construction and UL-listed certification help maximize long-term reliability and reduce maintenance frequency in critical applications.