Eaton E2MM3600WU66 Mining MCCB - 35 kAIC at 480V
Part Number: E2MM3600WU66
Quick Summary
Eaton E2 mining complete molded case circuit breaker provides rugged protection for mining electrical systems. The unit is designed to deliver reliable, trip-ready protection in harsh underground environments. Operators often struggle to pick breakers that withstand high fault currents while maintaining coordinated trips in challenging, underground conditions. The unit ships with MSHA-related safety documentation and mining compliance assets, with manufacturer supplied certifications on request to support field audits. Its interchangeable thermal-magnetic trip and M-frame design simplify installation and future upgrades, while ensuring quick service. With a 600 A rating and support for 1000Y/577 Vac and 250 Vdc, it adapts to mixed AC/DC mining drives and reduces the need for multiple protection devices.
Product Information
Extended Description
E2MM3600WU66 Eaton: Eaton E2 mining complete molded case circuit breaker, M-frame, E2MM, Interchangeable thermal-magnetic trip, 2000-4000A, Three-pole, 600A, 1000Y/577 Vac, 250 Vdc, 35 kAIC at 480V, 25 kAIC at 600V, 18 kAIC at 1000Y/577, 22 kAIC at 250 Vdc
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2MM3600WU66
UPC
786685242989
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.
Compliances
Contact Manufacturer
Certifications
Contact Manufacturer
Type
Specialty complete
Amperage Rating
600 A
Voltage rating
1000Y/577 Vac, 250 Vdc
Trip Type
T207
Circuit breaker type
E2MM
Circuit breaker frame type
Complete breaker
Magnetic trip range
2000-4000A
Terminals
Without terminals
Undervoltage release
120 Vac mining rear with left pigtail
Frame
M
Class
Mining
Interrupt rating
22 kAIC at 250 Vdc 25 kAIC at 600 V 18 kAIC at 1000Y/577 35 kAIC at 480 V
Number of poles
Three-pole
Trip rating
2000-4000 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
Digitrip 310+ vs. 310 electronic trip unit technical comparison
Digitrip 310+ vs. 310 electronic trip unit technical comparison
Digitrip 310+ vs. 310 electronic trip unit technical comparison
Digitrip 310+ vs. 310 electronic trip unit technical comparison
Understanding circuit breaker design and operation to improve safety and reliability in underground mining
Interchangeable thermal-magnetic trip (T207) lets you tailor protection for specific mine circuits without replacing the whole breaker. This simplifies maintenance, reduces spare part inventory, and speeds fault diagnosis in the field. Ideal for mining feeders and distribution panels where protection settings must adapt to changing load profiles. The 600 A amperage rating with 1000Y/577 Vac and 250 Vdc support enables reliable protection across mixed voltage systems, improving system reliability and reducing nuisance trips during voltage transients. The M-frame, three-pole design with a terminalless footprint yields a compact, flexible wiring solution that fits tighter panels and simplifies field wiring. Rated interrupt levels—22 kAIC at 250 Vdc, 25 kAIC at 600 V, 18 kAIC at 1000Y/577, and 35 kAIC at 480 V—provide robust fault endurance for heavy mining loads. An undervoltage release of 120 Vac mining rear with left pigtail enhances lockout and control reliability in underground systems. The product comes with Eaton’s warranty policy, offering one year from installation or eighteen months from shipment, reducing overall lifecycle risk and simplifying procurement.
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FAQs
When installing the E2MM3600WU66, plan for a three-pole, M-frame enclosure with space for field wiring since it is listed as a complete breaker without terminals. Use the 120 Vac undervoltage release wiring as specified and ensure proper clearance for the 4.06 in depth. Align trip settings with your mine’s protection strategy and verify compatibility with existing Digitrip or accessory units if upgrading from older MCCBs.
Key specs include a 600 A amperage rating, voltage rating of 1000Y/577 Vac and 250 Vdc, trip type T207, and a three-pole frame M design. Interrupt ratings vary by voltage: 22 kAIC at 250 Vdc, 25 kAIC at 600 V, 18 kAIC at 1000Y/577, and 35 kAIC at 480 V. Trip range is 2000–4000 A, and the unit supports a 120 Vac undervoltage release with a mining rear pigtail.
Yes. The E2MM3600WU66 is part of the E2 mining series and is compatible with common mining MCCB accessories and service tooling. Eaton provides technical comparisons and service material for Digitrip 310+ and related trip units, helping you migrate without unnecessary hardware changes and ensuring coordination with existing protection schemes.
Manufacturer provided documentation supports regulatory compliance in mining contexts. Notably, Eaton supplies MSHA policy letters relating to suitability, safety, and performance of circuit breakers. Additional certifications and compliance documents are available on request, helping you meet site-specific requirements and pass audits with confidence.
Choosing this breaker delivers reliability in demanding mining environments, reduced downtime through interchangeable trip units, and simplified spare-part inventories thanks to a compatible, common protection platform. The unit’s high interrupt ratings and versatile voltage support lead to safer operation, improved uptime, and lower total cost of ownership over the equipment lifecycle.