Eaton E2ME3800M2WU66 Mining MCCB - UL Listed
Part Number: E2ME3800M2WU66
Quick Summary
The Eaton E2 mining complete molded case circuit breaker is a high-capacity protection device designed for underground mining electrical systems. Engineers often wrestle with selecting breakers that endure demanding short-circuit events while avoiding nuisance trips caused by voltage swings. UL Listed and CSA Certified, this mining-class E2ME frame provides regulatory confidence, while the electronic LI trip delivers precise coordination. The unit installs easily within Eaton's ecosystem and supports scalable protection across feeders, improving uptime and maintenance planning. With an 800 A rating at 600 Vac and a broad magnetic trip range, it accommodates growing mine demand while meeting safety and efficiency goals.
Product Information
Extended Description
E2ME3800M2WU66 Eaton: Eaton E2 mining complete molded case circuit breaker, M-frame, E2ME, Electronic LI trip, 1000-4000A, Three-pole, 800A, 600 Vac, 65 kAIC at 240 Vac, 35 kAIC at 480 Vac, 25 kAIC at 600 Vac, 22 kAIC at 250 Vdc, No term.
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2ME3800M2WU66
UPC
786685242934
Product Length/Depth
4.06 in
Product Height
8.25 in
Product Width
8.25 in
Product Weight
29 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 CSA Certified
Type
Specialty complete
Amperage Rating
800 A
Voltage rating
600 Vac
Trip Type
T165
Circuit breaker type
E2ME
Circuit breaker frame type
Complete breaker
Magnetic trip range
1000-4000A
Terminals
Without terminals
Undervoltage release
120 Vac mining rear with left pigtail
Frame
M
Class
Mining
Interrupt rating
35 kAIC at 480 Vac 22 kAIC at 250 Vdc 25 kAIC at 600 Vac 65 kAIC at 240 Vac
Number of poles
Three-pole
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 - E2ME3800M2WU66
Eaton Specification Sheet - E2ME3800M2WU66
Eaton Specification Sheet - E2ME3800M2WU66
Eaton Specification Sheet - E2ME3800M2WU66
Understanding circuit breaker design and operation to improve safety and reliability in underground mining
800 A at 600 Vac provides robust primary protection for large mining feeders, reducing conductor overheating and nuisance trips during startup surges. This three-pole design ensures synchronized protection across phases, simplifying protection coordination and enabling safer, more reliable power distribution in underground facilities. The magnetic trip range (1000–4000 A) supports rapid fault interruption, improving plant safety and reducing damage to downstream equipment. With interrupt ratings up to 65 kAIC at 240 Vac, 35 kAIC at 480 Vac, 25 kAIC at 600 Vac and 22 kAIC at 250 Vdc, fault events are contained without compromising overall system availability. Frame M and mining-class construction deliver stable performance in harsh environments while enabling compact installations and straightforward field upgrades. The undervoltage release of 120 Vac mining rear with a left pigtail provides reliable remote control and coordination with control circuits. Ships without terminals to simplify wiring, while maintaining compatibility with a wide range of mining distribution panels. This combination of rugged protection, easy installation, and Eaton ecosystem integration translates into measurable uptime gains and predictable maintenance budgets for mining operations.
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FAQs
For underground mining installations, choose a mounting location that provides adequate clearance and ambient conditions within the E2ME3800M2WU66’s rated environment. The unit ships without terminals, so plan field wiring and terminal accessories accordingly. Ensure the undervoltage release (120 Vac rear with left pigtail) is correctly integrated into your control circuit and that wiring complies with UL CSA standards and mine electrical guidelines.
The breaker offers a magnetically assisted trip with an interrupt rating of 65 kAIC at 240 Vac, 35 kAIC at 480 Vac, and 25 kAIC at 600 Vac, enabling rapid interruption of high-energy faults. The magnetic trip range (1000–4000 A) supports selective coordination with downstream devices, reducing the risk of unnecessary outages while protecting equipment and personnel.
Yes. The E2ME3800M2WU66 is designed for mining use with a mining-class frame, three-pole configuration, and 600 Vac rating. It carries UL Listed and CSA Certified markings for regulatory compliance, and its 800 A rating supports large underground feeders. The undervoltage release and remote control features improve coordination with centralized control systems in demanding mining environments.
This model is UL Listed and CSA Certified, ensuring compliance with global electrical safety standards. These certifications support safe operation in mining and industrial facilities, simplify regulatory approval processes, and facilitate interconnection with other UL/CSA-listed Eaton protection devices for coordinated protection schemes.
The E2ME3800M2WU66 delivers improved uptime through precise LI trip coordination and reliable fault interruption, reducing unplanned outages. Its rugged mining-class design and field-friendly installation reduce maintenance complexity, while Eaton’s ecosystem support and training resources help optimize asset management, leading to lower total cost of ownership over the product lifecycle.