Eaton E2N312WU66 Mining MCCB - UL Listed, CSA Certified

Part Number: E2N312WU66
E2N312WU66
Manufacturer
Eaton
Part number
E2N312WU66
Category

Quick Summary

The Eaton E2N312WU66 mining molded case circuit breaker protects mining electrical circuits with precise electronic LSI trip control. In demanding underground environments, nuisance trips and complex wiring can slow production; this device targets those challenges with reliable, fast protection and configurable tripping. Key certifications include UL Listed and CSA Certified, ensuring safe, compliant installation in regulated facilities. With a 1200 A rating at 600 Vac, three-pole configuration, and an electronic LSI trip, it supports large mine feeders while simplifying maintenance and system coordination for uptime and safety.

Product Information

Extended Description

E2N312WU66 Eaton: Eaton E2 mining complete molded case circuit breaker, N-frame, E2N, Electronic LSI trip, 1250-5000A, Three-pole, 1200A, 600 Vac, 65 kAIC at 240 Vac, 50 kAIC at 480 Vac, 25 kAIC at 600 Vac, No term., 120 Vac mining rear w/ left pigtail
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2N312WU66
UPC
786679060117
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
Undervoltage release
120 Vac mining rear with left pigtail
Frame
N
Class
Mining
Interrupt rating
50 kAIC at 480 Vac 25 kAIC at 600 Vac 65 kAIC at 240 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 Benchmark tests of factory production vs. third-party reconditioned mining molded case circuit breakers Benchmark tests of factory production vs. third-party reconditioned mining molded case circuit breakers Benchmark tests of factory production vs. third-party reconditioned mining molded case circuit breakers Benchmark tests of factory production vs. third-party reconditioned mining molded case circuit breakers Understanding circuit breaker design and operation to improve safety and reliability in underground mining
Feature → Business Impact → Application: The E2N312WU66 uses electronic LSI trip technology to deliver fast, accurate protection, reducing nuisance trips and extending equipment life. This improves uptime in high-demand mining feeders and enables precise coordination with downstream protection schemes. Application: suited for heavy underground mining distribution where reliability and selectivity are critical. Feature → Business Impact → Application: N-frame, 1200 A, 600 Vac capability supports large power circuits, enabling fewer devices in a panel and streamlined installation. Application: large-mine service entrances and feeder circuits. Feature → Business Impact → Application: High interrupt ratings (50 kAIC at 480 Vac; 25 kAIC at 600 Vac; 65 kAIC at 240 Vac) improve fault withstand and system reliability, lowering total-cost-of-ownership through reduced downtime. Application: RVs, conveyors, and long-wall sections. Feature → Business Impact → Application: 120 Vac mining rear with left pigtail undervoltage release offers flexible control wiring and remote signaling. Application: remote trip control and advanced control schemes in underground equipment. Feature → Business Impact → Application: Terminals shipped without terminals provide field-wiring flexibility and compatibility with customer-specific cabling. Application: integration into OEM panels and retrofit projects. Feature → Business Impact → Application: UL Listed and CSA Certified compliance supports procurement and site approvals, mitigating qualification risk and speeding commissioning. Application: mining facilities seeking documented safety certifications.

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FAQs

Install the E2N312WU66 in N-frame, three-pole panels designed for mining MCCBs. It is supplied without terminals, so wire entry must be configured to match field wiring standards. Use the 120 Vac mining rear with left pigtail undervoltage release when remote signaling is required. Verify clearances and follow Eaton installation guidelines for underground environments.
Key specs include 1200 A amperage rating, 600 Vac voltage rating, and 50 kAIC at 480 Vac, 25 kAIC at 600 Vac, and 65 kAIC at 240 Vac interrupt ratings. The electronic LSI trip provides accurate coordination, reducing nuisance trips while maintaining rapid fault interruption essential for mining feeders and heavy equipment.
Yes. The E2N312WU66 is designed for mining service with N-frame, mining-rated class, and three-pole configuration. It features an undervoltage release option (120 Vac mining rear with left pigtail) for enhanced control, and its UL Listed CSA Certified status supports compliance across regulated mining environments.
The unit carries UL Listed and CSA Certified marks, indicating compliance with essential safety and performance standards for industrial and mining installations. These certifications streamline approvals, supplier qualifications, and site inspections, reducing project risk during procurement and commissioning.
Warranty follows Eaton policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, rely on the robust E2 mining line’s field-serviceability, documented in Eaton datasheets and compatibility guides. Regular inspection of undervoltage release wiring and trip settings helps maintain reliable protection and uptime in mining operations.