Eaton E2LEM34002WU66 E2 mining MCCB - UL Listed
Part Number: E2LEM34002WU66
Quick Summary
The Eaton E2LEM34002WU66 mining complete molded case circuit breaker protects underground electrical systems by delivering reliable overcurrent protection. Operators struggle with trip accuracy, downtime, and maintenance in harsh mining environments. This model carries UL Listed, IEC Rated, and CSA Certified approvals, underscoring safety and performance in demanding conditions. With its three-pole L-frame design and 400 A rating, it supports high-current protection for mining service panels and equipment, while the 1000Y/577 Vac and 250 Vdc capabilities cover both AC and DC circuits. The undervoltage release at 120 Vac rear with a left pigtail simplifies backplane wiring, and Eaton's warranty provides peace of mind. In short, it combines rugged reliability with easy integration to reduce downtime and total cost of ownership.
Product Information
Extended Description
E2LEM34002WU66 Eaton: Eaton E2 mining complete molded case circuit breaker, L-frame, E2LEM, Complete breaker, Electronic LI trip, 1000-4000A trip rating, Three-pole, 400A, 1000Y/577 Vac, 250 Vdc, Without terminals, Mining, 120 Vac rear with left pigtail
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2LEM34002WU66
UPC
782114345894
Product Length/Depth
4.06 in
Product Height
8.25 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
T165
Circuit breaker type
E2LEM
Circuit breaker frame type
Complete breaker
Magnetic trip range
1000-4000A
Terminals
Without terminals
Undervoltage release
120 Vac rear with left pigtail
Frame
L
Class
Mining
Interrupt rating
25 kAIC at 600 Vac 10 kAIC at 1000Y/577 Vac 35 kAIC at 480 Vac 22 kAIC at 250 Vdc 65 kAIC at 240 Vac
Number of poles
Three-pole
Trip rating
1000-4000 A
Mining molded-case circuit breakers with 310+ electronic trip unit product aid
Mining molded-case circuit breakers with 310+ electronic trip unit product aid
Mining molded-case circuit breakers with 310+ electronic trip unit product aid
Mining molded-case circuit breakers with 310+ electronic trip unit product aid
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
E2 1200 Vac - K, L, and M-Frame mining service breakers and accessories
E2 1200 Vac - K, L, and M-Frame mining service breakers and accessories
E2 1200 Vac - K, L, and M-Frame mining service breakers and accessories
E2 1200 Vac - K, L, and M-Frame mining service breakers and accessories
Understanding circuit breaker design and operation to improve safety and reliability in underground mining
Feature: 400 A Amperage Rating → Business Impact: Enables protection of high-current mining motors and critical equipment without nuisance trips, reducing unplanned downtime → Application: Mining service panels and control centers. Feature: 1000Y/577 Vac and 250 Vdc Voltage Rating → Business Impact: Supports mixed AC/DC systems common in underground operations, ensuring consistent protection across equipment → Application: Underground mining installations and conveyor drives. Feature: Electronic LI Trip (T165) within 310+ trip unit → Business Impact: Precise, fast fault isolation improves safety and equipment life while lowering maintenance costs → Application: Control panels in mining facilities. Feature: Three-pole L-frame, Complete breaker design → Business Impact: Compact footprint and modular integration, enabling scalable protection and easier field upgrades → Application: Mining service centers and modular panel assemblies. Feature: Undervoltage release, 120 Vac rear with left pigtail → Business Impact: Simplifies remote signaling and wiring diagnostics, improving reliability and commissioning speed → Application: Remote control circuits and sub-panels. Feature: Terminals without terminals → Business Impact: Flexibility to tailor terminations for rugged mining harnesses and field connections → Application: Harsh underground electrical installations. Feature: Certifications UL Listed, IEC Rated, CSA Certified → Business Impact: Compliance with global safety standards reduces certification risk and accelerates project approvals → Application: Mine DC/AC protection schemes and regulatory compliance. These combined features contribute to measurable outcomes such as reduced downtime, improved safety compliance, and lower total cost of ownership in mining operations.
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FAQs
The E2LEM34002WU66 is a three-pole, L-frame device rated at 400 A and designed for use in mining panels. It ships without terminals, so plan field terminations and bus connections accordingly. Use the 120 Vac rear undervoltage release with the left pigtail for control wiring, and follow the manufacturer’s wiring diagram from the datasheet (E2 1200 Vac mining service breakers and accessories) to ensure proper alignment and secure mounting.
Key specs include a 400 A amperage rating, voltage capability of 1000Y/577 Vac and 250 Vdc, and a trip type of T165 with an electronic LI trip unit. It supports a magnetic trip range of 1000–4000 A, is three-pole, and uses an L-frame design. Interruption ratings reach up to 65 kAIC at 240 Vac, with 25 kAIC at 600 Vac, meeting mining safety requirements.
Yes. It is explicitly designed for mining with a complete mining MCCB lineup, UL Listed, IEC Rated, and CSA Certified. The 400 A rating, 1000Y/577 Vac capability, and 25 kAIC/65 kAIC interrupt ratings support reliable protection for critical mining equipment and control systems in underground environments.
The E2LEM34002WU66 carries UL Listed, IEC Rated, and CSA Certified statuses, aligning with major global electrical safety and performance standards. These certifications help justify installation in regulated mining projects and expedite regulatory approvals.
The MCCB’s robust trip protection reduces unplanned downtime, while its durable electronic trip unit lowers maintenance frequency. Coupled with Eaton’s warranty (25-000 policy) and compatibility with modular E2 mining breakers, customers can expect lower total cost of ownership through safer operation, fewer spare part needs, and quicker maintenance cycles.