Eaton E2LEM3400M2WU66 Mining MCCB - UL Listed

Part Number: E2LEM3400M2WU66
E2LEM3400M2WU66
Manufacturer
Eaton
Part number
E2LEM3400M2WU66
Category

Quick Summary

The Eaton E2 mining complete molded case circuit breaker provides robust overcurrent protection for large mining electrical systems. This model is designed to simplify maintenance and reduce downtime in harsh mining environments, where reliability and quick service are critical. It carries UL Listed, IEC Rated, and CSA Certified marks, underscoring broad regulatory compliance and safety performance. For engineers and procurement teams, this translates to easier supplier qualification, consistent protection schemes, and predictable total cost of ownership. Beyond protection, the E2LEM3400M2WU66 supports clean integration with existing Eaton protection ecosystems while delivering strong third‑party certification alignment for compliance-focused projects.

Product Information

Extended Description

E2LEM3400M2WU66 Eaton: Eaton E2 mining complete molded case circuit breaker, L-frame, E2LEM, Complete breaker, Interchangeable magnetic only trip, 1000-4000A trip rating, Three-pole, 400A, 1000Y/577 Vac, 250 Vdc, no terminals, Mining, 120 Vac rear w/ left pigtail
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2LEM3400M2WU66
UPC
786679012086
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
Magnetic trip range
1000-4000A
Terminals
Without terminals
Undervoltage release
120 Vac rear with left pigtail
Frame
L
Class
Mining
Interrupt rating
22 kAIC at 250 Vdc 25 kAIC at 600 Vac 10 kAIC at 1000Y/577 Vac 65 kAIC at 240 Vac 35 kAIC at 480 Vac
Number of poles
Three-pole
Trip rating
1000-4000 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 Eaton Specification Sheet - E2LEM3400M2WU66 Eaton Specification Sheet - E2LEM3400M2WU66 Eaton Specification Sheet - E2LEM3400M2WU66 Eaton Specification Sheet - E2LEM3400M2WU66 Understanding circuit breaker design and operation to improve safety and reliability in underground mining
Feature: Interchangeable magnetic trip and T205 trip type provide flexible protection curves. Business Impact: Reduces nuisance trips and simplifies field calibration, extending motor life and lowering maintenance costs. Application: Mining conveyors and large-motor drives where precise magnetic protection is needed. Feature: L-frame, three-pole design with 400 A rating and 1000Y/577 Vac, 250 Vdc. Business Impact: Enables reliable three‑phase protection for high‑demand mining feeders, improving uptime and system stability. Application: Surface and underground mining distribution panels needing sturdy MCCBs. Feature: Magnetic trip range of 1000-4000 A and 22 kAIC at 250 Vdc / 25 kAIC at 600 Vac. Business Impact: Fast, dependable fault interruption across multiple fault current scenarios, reducing arc exposure and equipment damage. Application: Primary protection in mining substations and MCCB assemblies. Feature: Undervoltage release 120 Vac rear with left pigtail and terminals without terminals. Business Impact: Streamlines installation, wiring, and retrofits, saving time and reducing labor costs. Application: Retrofit projects and new builds with compact wiring footprints. Feature: Certifications (UL Listed, IEC Rated, CSA Certified). Business Impact: Demonstrates compliance with global mining and electrical safety standards, easing cross-border deployment. Application: Projects with stringent regulatory and procurement requirements. Feature: Warranty and service policy (25-000) offering one year from installation or 18 months from shipment. Business Impact: Improves risk management and provides clear post‑purchase support. Application: Asset management programs and long‑term maintenance planning.

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FAQs

Installers should use the L-frame, three-pole design with 400 A rating and ensure wiring follows the 120 Vac rear undervoltage release configuration with left pigtail. The unit ships without terminals, so plan for compatible bus plugs or accessories and confirm proper clearance for the 10 in. high profile. This promotes reliable trip performance and straightforward retrofits into existing Eaton protection schemes.
Verify amperage rating of 400 A, voltage rating of 1000Y/577 Vac and 250 Vdc, trip type T205, and magnetic trip range of 1000–4000 A. Also check interrupt ratings: 22 kAIC at 250 Vdc, 25 kAIC at 600 Vac, 10 kAIC at 1000Y/577 Vac, 65 kAIC at 240 Vac, and 35 kAIC at 480 Vac to match your system fault currents.
Yes. The E2LEM3400M2WU66 is designed specifically for mining environments, offering a complete E2 mining MCCB package with a robust magnetic trip, L-frame configuration, and three-pole protection. Its UL Listed, IEC Rated and CSA Certified status supports compliance in underground and surface mining facilities.
The breaker is UL Listed, IEC Rated, and CSA Certified. These certifications confirm adherence to recognized safety and performance standards, facilitating regulatory approval, cross‑border procurement, and consistent protection performance across diverse mining projects.
The model follows Eaton’s warranty policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. This provides a clear service window for commissioning, commissioning support, and planned maintenance without unexpected coverage gaps.