Eaton E2N312W Mining MCCB - Three-pole 65 kAIC UL Listed
Part Number: E2N312W
Quick Summary
The Eaton E2N312W mining MCCB protects heavy mining electrical circuits with precise electronic LSI trip for dependable operation in harsh environments. Operators face nuisance trips, cramped installations, and the need to meet evolving safety and performance standards in underground sites. UL Listed and CSA Certified protection ensure regulatory alignment while the 1250–5000 A magnetic trip range and 600 Vac rating support critical mine feeders and equipment. The compact N-frame, three-pole design with terminals removed simplifies installation and reduces panel footprint in rugged mining panels. Choosing this MCCB translates to lower downtime, improved maintenance efficiency, and predictable performance in harsh mining conditions.
Product Information
Extended Description
E2N312W Eaton: Eaton E2 mining complete molded case circuit breaker, N-frame, E2N, Electronic LSI trip, 1250-5000A trip rating, Three-pole, 1200A, 600 Vac, 65 kAIC at 240 Vac, 50 kAIC at 480 Vac, 25 kAIC at 600 Vac, Without terminals, Mining
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2N312W
UPC
786679060032
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.
Certifications
UL Listed CSA Certified
Type
Specialty complete
Amperage Rating
1200 A
Voltage rating
600 Vac
Trip Type
Electronic LSI
Circuit breaker type
E2N
Magnetic trip range
1250-5000A
Terminals
Without terminals
Frame
N
Class
Mining
Interrupt rating
50 kAIC at 480 Vac 65 kAIC at 240 Vac 25 kAIC at 600 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
Magnetic trip range 1250–5000 A provides scalable protection for large fault currents, enabling engineers to tailor protection to specific mining equipment and feeders. This capability reduces fault energy transfer and minimizes collateral damage during short-circuit events. Electronic LSI trip ensures fast, precise opening with adjustable coordination and arc-flash mitigation. In applications such as mining motor controls and feeder disconnects, this delivers smoother startup and fewer nuisance trips while meeting safety standards. 600 Vac rating plus defined interrupt ratings up to 50 kAIC at 480 Vac and 65 kAIC at 240 Vac deliver robust protection for medium-voltage underground circuits, enabling reliable isolation of faults without over- or under-protecting equipment. The 3-pole N-frame design provides stable, rugged protection for three-phase mining circuits, while terminals-less configuration simplifies field wiring and reduces installation time in cramped spaces. UL Listed and CSA Certified ensure compliance with global electrical safety standards, and the compact footprint supports faster integration in existing panels. Compatibility with K, L, M-Frame mining accessories and a broad catalog ecosystem reduces engineering time and simplifies retrofits, contributing to lower lifecycle costs and easier maintenance.
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FAQs
The E2N312W uses a terminals-free design that simplifies mounting in three-pole, N-frame mining panels. Ensure proper panel cutout, secure mounting hardware, and verify clearances for heat dissipation. Use compatible accessories from Eaton’s mining catalog to complete wiring and coordination with upstream feeders. Follow the manufacturer’s installation guide for torque specifications and conductor sizing to minimize wiring errors and commissioning time.
It combines a 1250–5000 A magnetic trip range with a 50 kAIC at 480 Vac and 65 kAIC at 240 Vac rating, providing scalable protection for large fault currents typical in mining environments. The electronic LSI trip enhances coordination and fast fault isolation, reducing arc energy and improving operator safety during motor starts and feeder disconnections.
Yes. The E2N312W is UL Listed and CSA Certified, which supports compliance with major safety and electrical standards. These certifications help satisfy procurement criteria in regulated mining operations and facilitate acceptance in safety audits and regulatory reviews, while the product’s mining-class ratings align with industry practice.
Refer to Eaton’s mining MCCB literature, including E2 Series mining service breakers brochures and the E2 1200 Vac - K, L, and M-Frame datasheets. Key assets include the E2N312W page, 1200 Vac mining accessories documentation, and the ‘Specifications and datasheets’ PDFs. These resources streamline selection, compatibility checks, and retrofit planning for current installations.
Warranty follows Eaton Selling Policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. In addition, Eaton provides mining service centers and technical support for commissioning, troubleshooting, and spare parts sourcing to minimize downtime and maintain continuity in critical mining applications.