Eaton E2NM310WU66 Mining MCCB - 25 kAIC
Part Number: E2NM310WU66
Quick Summary
The Eaton E2NM310WU66 mining MCCB provides protective tripping for mining electrical feeders with precise electronic LI trip. In harsh mining environments, unreliable protection and nuisance trips can drive costly downtime. This device aligns with key mining safety standards and Eaton's certification documentation, including MSHA guidance; verify the latest datasheet for listings. Designed for industrial circuit protection, it supports robust uptime and safer, compliant power distribution in mining operations.
Product Information
Extended Description
E2NM310WU66 Eaton: Eaton E2 mining complete molded case circuit breaker, N-frame, E2NM, Electronic LI trip, 1250-5000A trip rating, Three-pole, 1000A, 1000Y/577 Vac, 250 Vdc, 25 kAIC at 1000 Vac, No terminals, Mining, 120 Vac mining rear with left pigtail
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2NM310WU66
UPC
786679059807
Product Length/Depth
5.5 in
Product Height
8.25 in
Product Width
8.25 in
Product Weight
45 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.
Compliances
Contact Manufacturer
Certifications
Contact Manufacturer
Type
Specialty complete
Amperage Rating
1000 A
Voltage rating
1000Y/577 Vac, 250 Vdc
Trip Type
T165
Circuit breaker type
E2NM
Magnetic trip range
1250-5000A
Terminals
Without terminals
Undervoltage release
120 Vac mining rear with left pigtail
Frame
N
Class
Mining
Interrupt rating
25 kAIC at 1000 Vac
Number of poles
Three-pole
1200V K, L, M-Frame E2 mining molded case circuit breakers product aid
1200V K, L, M-Frame E2 mining molded case circuit breakers product aid
1200V K, L, M-Frame E2 mining molded case circuit breakers product aid
1200V K, L, M-Frame E2 mining molded case circuit breakers 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
Eaton Specification Sheet - E2NM310WU66
Eaton Specification Sheet - E2NM310WU66
Eaton Specification Sheet - E2NM310WU66
Eaton Specification Sheet - E2NM310WU66
Understanding circuit breaker design and operation to improve safety and reliability in underground mining
Feature: Electronic LI trip provides fast, staged fault clearing. Business Impact: Minimizes arc flash exposure and short-circuit damage, improving equipment life and operator safety. Application: Mining feeder banks requiring precise trip coordination and rapid fault isolation. Feature: 1000 A amperage rating with 25 kAIC interrupt rating at 1000 Vac enables robust protection for high-power loads. Business Impact: Reduces risk of catastrophic failures and unplanned downtime, lowering maintenance costs. Application: Large mine substations and main feeders. Feature: Undervoltage release with 120 Vac mining rear and left pigtail simplifies integration. Business Impact: Enables safe operation and reliable lockout/restore sequences in complex mine layouts. Application: Retrofit and new installs in underground and surface mining. Feature: Three-pole, N-frame, mining class design delivers rugged durability in harsh environments. Business Impact: Extends service life in dusty, humid, or vibrating settings, lowering replacement cycles. Application: Surface haulage and underground conveyor drives. Feature: Terminals without terminals option provides flexible field integration with customer bus bars or terminal kits. Business Impact: Reduces installation time and custom machining, improving project timelines. Application: Custom electrical rooms and modular mining substations. Feature: Comprehensive warranty and service documentation from Eaton. Business Impact: Enables predictable maintenance budgeting and quicker support. Application: Asset management programs in mining operations.
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FAQs
E2NM310WU66 is listed as without terminals, so field wiring typically requires compatible terminal kits or bus bar connections. For best results, choose Eaton-approved lug kits and mounting hardware for the N-frame three-pole configuration, ensuring secure connections, proper torque, and a clean, code-compliant installation in mining electrical rooms or cabinets.
Key specs include a 1000 A amperage rating, 1000Y/577 Vac and 250 Vdc voltage ratings, a 25 kAIC interrupt rating at 1000 Vac, and a T165 trip type. It is a three-pole, N-frame, mining-class molded case circuit breaker with electronic LI trip designed for high-current mining applications.
Yes. The E2NM310WU66 is specified for mining use with a mining-class rating, three poles, and a 25 kAIC interrupt capability. Its undervoltage release and rear-mounted features support reliable operation in underground environments, while its rugged N-frame construction is well-suited to the harsh conditions common in underground conveyors and equipment.
Certifications and approvals are managed through the manufacturer; current documentation references MSHA policy guidance and Eaton datasheets. For specific CE, UL, CSA, or other regulatory listings, consult the latest Eaton specification sheets and product datasheet (E2NM310WU66) to confirm the exact approvals applicable to your region and mining operation.
Warranty terms follow Eaton Selling Policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. This includes standard support and access to Eaton technical resources. For extended coverage or maintenance planning, consult Eaton’s support team and your local distributor.