Eaton E2NM312W Mining MCCB - 25 kAIC at 1000V
Part Number: E2NM312W
Quick Summary
Eaton E2NM312W mining MCCB is a high-current molded case circuit breaker for underground mining power circuits. Operators face downtime and maintenance when breakers trip unexpectedly in harsh underground environments. Key certifications and compliance materials include MSHA policy letters for mining safety; for CE, SIL, and IP ratings, refer to Eaton’s official documents or contact manufacturer. These features support uptime, protection reliability, and cost-efficient maintenance in mining electrical protection and circuit control environments. By aligning with industry best practices, the E2NM312W helps engineers simplify coordination with upstream protections and maintenance plans. End users also gain clear documentation and field support from Eaton, reducing project risk and speeding commissioning.
Product Information
Extended Description
E2NM312W Eaton: Eaton E2 mining complete molded case circuit breaker, N-frame, E2NM, Complete breaker, Electronic LI trip type, 1250-5000A trip rating, Three-pole, 1200A, 1000Y/577 Vac, 250 Vdc, 25 kAIC at 1000 Vac, Without terminals, Mining
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2NM312W
UPC
786679059739
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
1200 A
Voltage rating
1000Y/577 Vac, 250 Vdc
Trip Type
T165
Circuit breaker type
E2NM
Magnetic trip range
1250-5000A
Terminals
Without terminals
Frame
N
Class
Mining
Interrupt rating
25 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
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
Feature: High-current capability with a 1200 A Amperage Rating and a 25 kAIC interrupt rating at 1000 Vac. Business Impact: Enables reliable protection for heavy mining feeders and motors while limiting fault energy; Application: underground mining power distribution and load centers. Feature: Electronic trip type T165 and compatibility with Digitrip 310+ electronic trip units. Business Impact: Reduces nuisance trips, improves protection coordination, and enhances safety margins; Application: mission-critical mining circuits requiring precise trip settings. Feature: Frame N with three poles and a compact N-frame footprint; Terminals: Without terminals. Business Impact: Simplifies cabinet integration and allows гибкая termination options with external hardware; Application: modular mining MCCB panels and custom terminations. Feature: Mining-class design and 25 kAIC interrupt rating. Business Impact: Withstands high fault currents typical in mining environments, improving system reliability; Application: underground coal and metal ore processing feeders and motors. Feature: Manufacturer-supported warranty (one year from installation or 18 months from shipment). Business Impact: Reduces total cost of ownership through predictable service and support; Application: long-duration mining projects and service contracts. Downloadable resources and MSHA guidance further support installation planning and compliance in real-world mining operations.
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FAQs
The E2NM312W is a three-pole, N-frame mining MCCB designed for compatible integration into Eaton-based mining protection panels. It ships without terminals, so you will specify external terminations and bus connections per your panel design. Ensure the panel is rated for 1000Y/577 Vac and the 25 kAIC interrupt level. Refer to Eaton installation guides and MSHA-compliant documentation during commissioning.
Key ratings include a 1200 A amperage rating and a magnetic trip range of 1250–5000 A, with an interrupt rating of 25 kAIC at 1000 Vac. The device is a three-pole, N-frame unit with voltage ratings of 1000Y/577 Vac and 250 Vdc, supporting mining electrical protection and circuit control applications while maintaining tight trip coordination.
Yes. The E2NM312W is purpose-built for mining applications and supports 1000Y/577 Vac, 250 Vdc configurations, enabling protection of high-power underground feeders and equipment. Its three-pole design and high interrupt rating make it suitable for demanding mining environments where reliable breaking and protection coordination are essential.
The product references MSHA policy letters for mining safety and performance. Specific CE, SIL, or IP ratings are not listed in the provided data; engineers should verify regional certification requirements with Eaton or review the official datasheets and compliance documents available from Eaton to ensure local regulatory alignment.
Warranty is Eaton’s policy: one year from installation or eighteen months from shipment, whichever occurs first. This supports project risk reduction and predictable maintenance budgeting. Additional support includes access to Eaton’s mining MCCB brochures, case studies, and MSHA guidance, aiding long-term reliability and return-on-investment calculations.