Eaton E2MW3400W Mining MCCB - UL Listed CSA Certified
Part Number: E2MW3400W
Quick Summary
The Eaton E2MW3400W mining MCCB provides high-current protection for underground mining electrical feeders. In demanding mines, downtime and miscoordination between protective devices can cripple production and jeopardize operator safety. This unit carries UL Listed and CSA Certified markings, with a 1200 Vac rating, 12 kAIC interrupt capability, and a rugged M-frame design tailored for mining environments. Designed for reliable, code-compliant protection across switchgear and distribution panels, it integrates with Eaton accessories and offers straightforward field installation to improve maintenance predictability and reduce total cost of ownership.
Product Information
Extended Description
E2MW3400W Eaton: Eaton E2 mining complete molded case circuit breaker, M-frame, E2MW, Complete breaker, Thermal-magnetic trip type, 1000-2000A trip rating, Three-pole, 400A, 1200 Vac, 12 kAIC at 1200 Vac, Without terminals, Mining
Product Name
Eaton E2 mining complete molded case circuit breaker
Catalog Number
E2MW3400W
UPC
786685887104
Product Length/Depth
18.5 in
Product Height
7.5 in
Product Width
11 in
Product Weight
25 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
Amperage Rating
400 A
Voltage rating
1200 Vac
Trip Type
T268
Circuit breaker type
E2MW
Circuit breaker frame type
Complete breaker
Magnetic trip range
1000-2000A
Terminals
Without terminals
Frame
M
Class
Mining
Interrupt rating
12 kAIC at 1200 Vac
Number of poles
Three-pole
Trip rating
1000-2000 A
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
Selling Policy 25-000 - Distribution and Control Products and Services
Understanding circuit breaker design and operation to improve safety and reliability in underground mining
Thermal-magnetic trip type provides fast, coordinated protection, reducing arc flash risk and equipment damage, which translates to minimized unplanned downtime in mining operations and safer motor starts in harsh environments. The 400 A amperage rating at 1200 Vac supports high-current mining feeders and large motor loads, delivering efficient protection without overtripping. An interrupt rating of 12 kAIC at 1200 Vac ensures fault currents are reliably interrupted, safeguarding downstream devices and enabling safer shutdown sequences in underground installations. The M-frame, mining-class design offers rugged reliability and compatibility with K, L, and M-frame accessories, simplifying procurement and panel integration across multi-site mining projects. Terminals are listed as without terminals, providing wiring flexibility for busbar configurations and field-installation efficiency. The included certifications, UL Listed and CSA Certified, support regulatory compliance and supplier qualification while the one-year warranty (or 18 months from shipment) reduces risk during initial deployment and scaled rollouts. Overall, the E2MW3400W balances protection, performance, and compatibility for demanding mining environments and installation teams.
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FAQs
E2MW3400W is shipped without terminals, offering wiring flexibility for busbar or field-lug connections. When planning installation, verify compatibility with Eaton K, L, or M-frame accessories and ensure the mounting arrangement fits the mining panel envelope. Use torque specs and follow the datasheet guidance to maintain electrical integrity and proper trip performance.
Key specs include a 400 A amperage rating, 1200 Vac voltage rating, and a 12 kAIC interrupt rating at 1200 Vac. It is a three-pole, M-frame mining class breaker with a thermal-magnetic trip (T268) and a trip range of 1000–2000 A, suitable for large mining feeders and motor protection.
Yes. The device is designed for mining environments and carries UL Listed and CSA Certified markings, indicating compliance with key safety and performance standards. Its 1200 Vac rating and 12 kAIC interrupt capability support robust protection for underground distribution panels and mining equipment under severe fault conditions.
The E2MW3400W is UL Listed and CSA Certified, ensuring compliance with recognized electrical safety and performance requirements. These certifications simplify supplier qualification, support code compliance in mining facilities, and provide assurance to engineers and procurement teams when validating protective devices for critical mining circuits.
Deployment can reduce unplanned downtime through reliable thermal-magnetic protection and high fault current handling. The unit’s rugged M-frame design, compatibility with Eaton accessories, and a standard warranty help lower maintenance cycles and long-term ownership costs, delivering predictable protection for mine feeders and motor loads while supporting faster serviceability in remote mining sites.