Eaton E2 mining complete MCCB E2LEM3400MWA06U66 - UL Listed
Part Number: E2LEM3400MWA06U66
Quick Summary
The Eaton E2 mining complete molded case circuit breaker protects mining electrical systems by interrupting faults in high-current circuits. In harsh mining environments, uptime is critical, and unplanned outages can cascade into costly downtime. This unit is UL Listed, IEC Rated, and CSA Certified, confirming safety and performance to global mining standards. Engineered for rugged underground and surface mining installations, it balances protective performance with installation flexibility. By aligning with established Eaton service practices, it helps reduce warranty risk and maintenance downtime while supporting scalable protection with a 400 A rating and an adjustable magnetic trip. The design ensures reliable operation in demanding conditions, aiding compliance and operational efficiency.
Product Information
Extended Description
E2LEM3400MWA06U66 Eaton: Eaton E2 mining complete molded case circuit breaker, L-frame, E2LEM, Interchangeable magnetic only trip, 500-2500A trip rating, Three-pole, 400A, 1000Y/577 Vac, 250 Vdc, no term., 1A-1B rear w/ right pigtail, 120 Vac rear w/ left pigtail
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2LEM3400MWA06U66
UPC
782113690780
Product Length/Depth
4.06 in
Product Height
10.75 in
Product Width
8.25 in
Product Weight
20 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 IEC Rated CSA Certified
Type
E2 mining
Amperage Rating
400 A
Voltage rating
1000Y/577 Vac, 250 Vdc
Trip Type
T205
Circuit breaker type
E2LEM
Circuit breaker frame type
Complete breaker
Auxiliary switch
1A-1B rear with right pigtail
Magnetic trip range
500-2500A
Shunt trip
12 Vac or 50-60 Vdc left
Terminals
Without terminals
Undervoltage release
120 Vac rear with left pigtail
Frame
L
Class
Mining
Interrupt rating
22 kAIC at 250 Vdc 35 kAIC at 480 Vac 25 kAIC at 600 Vac 10 kAIC at 1000Y/577 Vac 65 kAIC at 240 Vac
Number of poles
Three-pole
Trip rating
500-2500 A
Eaton E2 Series mining service circuit breakers
Eaton E2 Series mining service circuit breakers
Eaton E2 Series mining service circuit breakers
Eaton E2 Series mining service circuit breakers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
MSHA policy letter for suitability, safety and performance of circuit breakers
Robinson Mine Case Study: Solutions for the mining industry
Digitrip 310+ vs. 310 electronic trip unit technical comparison
Digitrip 310+ vs. 310 electronic trip unit technical comparison
Digitrip 310+ vs. 310 electronic trip unit technical comparison
Digitrip 310+ vs. 310 electronic trip unit technical comparison
Selling Policy 25-000 - Distribution and Control Products and Services
Understanding circuit breaker design and operation to improve safety and reliability in underground mining
Feature: 400 A amperage rating with 1000Y/577 Vac and 250 Vdc. Business Impact: enables robust protection for high-load mining circuits, reducing the risk of equipment damage during faults. Application: ideal for three-pole mining distribution panels where large motors and power rails demand strong protection. Feature: Interchangeable magnetic trip and a magnetic trip range of 500-2500 A. Business Impact: allows field tailoring of protection to shifting load profiles, minimizing nuisance trips and unnecessary downtime. Application: suitable for evolving mining mine-site loads and retrofit projects. Feature: Shunt trip, undervoltage release, and auxiliary switch options. Business Impact: supports remote safe shutdowns and enhanced control interlocks, improving operator safety and compliance. Application: retrofits and new builds needing remote control and safety interlocks. Feature: Frame L, Class Mining with 22 kAIC at 250 Vdc and up to 65 kAIC at 240 Vac. Business Impact: delivers high fault interrupt capability for diverse mining environments, protecting cables and bus bars while meeting stringent regulatory requirements. Application: heavy-duty underground mining installations and harsh surface sites. Feature: Shipping without terminals and rear/left/right pigtail options. Business Impact: provides wiring flexibility and easier integration with customer lug kits or panel bus connections, reducing installation time. Application: OEM panel integrations and field retrofits. Feature: Three-pole, 400 A, 1000Y/577 Vac, 250 Vdc ratings. Business Impact: consolidates protection in a compact L-frame unit, lowering panel density and simplifying maintenance. Application: mine electrical rooms and mobile equipment permits. Feature: Certifications UL Listed, IEC Rated, CSA Certified. Business Impact: ensures compliance across North America and international mining standards, reducing audit risk. Application: procurement and compliance planning for global mining operations.
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FAQs
The E2LEM3400MWA06U66 is an L-frame, three-pole mining MCCB designed for compatibility with common panel footprints. It ships without terminals, allowing you to select lug kits or bus-bar connections tailored to your enclosure. Optional accessories include rear auxiliary contact 1A-1B with a right pigtail and remote-control options such as shunt trip and undervoltage release for safer, easier integration.
Rated at 400 A with voltage ratings of 1000Y/577 Vac and 250 Vdc, the device provides high fault protection. Interrupt ratings include 22 kAIC at 250 Vdc, 35 kAIC at 480 Vac, 25 kAIC at 600 Vac, 10 kAIC at 1000Y/577 Vac, and 65 kAIC at 240 Vac, supporting reliable clearance of faults across diverse mining circuits.
The breaker supports a 12 Vac shunt trip or 50-60 Vdc, 120 Vac undervoltage release, and an auxiliary switch (1A-1B rear with right pigtail). These options enable remote shutdown, enhanced interlocks, and compliance with safety procedures in underground and surface mining applications.
Yes. The unit is UL Listed, IEC Rated, and CSA Certified, ensuring alignment with major mining safety and performance standards. This certification combination supports regulatory compliance, reduces risk during audits, and provides confidence for procurement and installation in demanding mining environments.
The product carries a one-year warranty from installation or eighteen months from shipment, whichever comes first. Regular maintenance includes verifying trip diagnostics, inspecting wiring integrity, and ensuring proper terminal connections where applicable. Eaton offers service literature and technical support to optimize uptime and simplify parts planning for mining operations.