Eaton E2MEM3800WU66 Mining MCCB - 18 kAIC, 1000Y/577 Vac
Part Number: E2MEM3800WU66
Quick Summary
The Eaton E2 mining complete molded case circuit breaker protects underground mining feeders with reliable, precise protection. This model addresses nuisance trips and downtime by leveraging an electronic LI trip for stable performance in demanding environments. UL Listed, IEC Rated, and CSA Certified, it meets cross-border safety and performance standards. For OEMs and maintenance teams, this unit delivers predictable protection with easy compatibility to M-frame mining service breakers and accessories, supporting faster commissioning and reduced total cost of ownership in harsh mining conditions.
Product Information
Extended Description
E2MEM3800WU66 Eaton: Eaton E2 mining complete molded case circuit breaker, M-frame, E2MEM, Electronic LI trip, 500-2500A trip rating, Three-pole, 800A, 1000Y/577 Vac, 18 kAIC at 1000 Vac, Without terminals, Mining, 120 Vac mining rear with left pigtail
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2MEM3800WU66
UPC
786685243009
Product Length/Depth
4.06 in
Product Height
16 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 IEC Rated CSA Certified
Type
E2 mining
Amperage Rating
800 A
Voltage rating
1000Y/577 Vac
Trip Type
T165
Circuit breaker type
E2MEM
Circuit breaker frame type
Complete breaker
Magnetic trip range
500-2500A
Terminals
Without terminals
Undervoltage release
120 Vac mining rear with left pigtail
Frame
M
Class
Mining
Interrupt rating
18 kAIC at 1000 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
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 → Business Impact → Application. The E2MEM3800WU66 employs an electronic LI trip within a three-pole, M-frame mining breaker, delivering fast, selective protection that minimizes nuisance trips and protects costly equipment in underground circuits. This translates to reduced downtime, improved safety, and lower maintenance costs for mining operations, including slurry, hoist, and conveyance systems. The unit is rated at 800 A with a 1000Y/577 Vac voltage, enabling robust distribution for medium- to heavy-load mining feeders while maintaining compliance with UL, IEC, and CSA standards. Its 18 kAIC interrupt rating at 1000 Vac provides strong fault clearance margins, supporting high-energy fault scenarios common in mining plants. With no terminals included, installation can be tailored to endure rugged environments and simplify field wiring when paired with rear-mount options; the 120 Vac mining rear with left pigtail enhances control circuitry integration and relays. This product line also benefits from Eaton’s service literature and catalogs for faster project scoping and risk mitigation in mining projects.
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FAQs
The E2MEM3800WU66 is designed for M-frame mining service setups and three-pole configurations, ensuring seamless integration with compatible Eaton mining panels. It ships without terminals, allowing flexible field wiring, and offers 120 Vac mining rear with left pigtail for control circuits. Always verify frame type and mounting dimensions (4.06 in depth, 8.25 in width, 16 in height) for proper fit.
Key specs include an 800 A amperage rating, 1000Y/577 Vac voltage rating, and an 18 kAIC interrupt rating at 1000 Vac. The trip type is T165, and the unit is a three-pole E2MEM with a complete breaker frame. These values support dependable protection for mining feeders and high-energy mining equipment.
Yes. Its mining-class designation, UL Listed, IEC Rated, and CSA Certified statuses, plus the M-frame 3-pole design and high interrupt capability, make it well-suited for underground mining power distribution, motor feeders, and load centers where reliability and safety are critical.
Certifications include UL Listed, IEC Rated, and CSA Certified. These indicate compliance with recognized safety and performance standards across North American and international markets, supporting regulatory acceptance, project approvals, and safer operation in mining environments where strict electrical protection is required.
The unit’s robust protection and high interrupt rating reduce unplanned outages, increasing uptime and equipment life. Eaton’s warranty covers one year from installation or 18 months from shipment, whichever occurs first. When combined with reliable replacement parts and service literature, the total cost of ownership improves through fewer trips, faster maintenance, and better safety compliance.