SKU: 4493159332

Eaton Cutler Hammer Mining E2NM3900WU66 900A 3 Pole Molded Case Mining Circuit Breaker – Bolt-On Mount – 1000VAC

Sale price$5309.55 Regular price$5899.50
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Description

Eaton Cutler Hammer Mining E2NM3900WU66 900A 3 Pole Molded Case Mining Circuit Breaker – Bolt-On Mount – 1000VACThe Eaton E2NM3900WU66 is a high capacity molded case mining circuit breaker engineered for demanding industrial and mining applications. Built on the durable N frame platform, it features a non interchangeable thermal magnetic trip unit that provides reliable protection against overloads and short circuits. With a 900 ampere rating and support for up to 1000VAC, this breaker ensures dependable performance in heavy duty power distribution systems. The

The Eaton E2NM3900WU66 is a high-capacity molded case mining circuit breaker engineered for demanding industrial and mining applications. Built on the durable N-frame platform, it features a non-interchangeable thermal-magnetic trip unit that provides reliable protection against overloads and short circuits. With a 900-ampere rating and support for up to 1000VAC, this breaker ensures dependable performance in heavy-duty power distribution systems. The U66 configuration includes a 120VAC undervoltage release (UVR) with LED indicator, left pole mounting, and rear exit, offering enhanced monitoring, visibility, and controlled operation.

Product Specifications

  • Frame Style: E2NM (N Frame)
  • Breaker Type: Molded Case Mining Circuit Breaker
  • Trip Unit Type: Non-Interchangeable Thermal-Magnetic
  • Amperage Rating: 900 Ampere
  • Number of Poles: 3 Pole
  • Mounting Type: Bolt-On
  • Frequency: 50/60 Hz
  • Application: Mining and heavy industrial power distribution

Technical Specifications

  • Trip Mechanism: Thermal-Magnetic
  • Trip Setting Range: 1250–5000 Amps
  • Interrupting Capacity Class: High Interrupting Capacity
  • Construction Type: Molded Case
  • Operating Temperature: Rated at 40°C
  • Special Features:
    • U66 Option: 120VAC Undervoltage Release (UVR) Installed
    • LED Indicator Included
    • Left Pole Mounted
    • Rear Exit Connection

Voltage and Ratings

  • Rated Voltage (AC): Up to 1000VAC
  • Frequency: 50/60 Hz
  • Interrupting Rating @ 480VAC: 50 kA
  • Interrupting Rating @ 600VAC: 25 kA
  • Interrupting Rating @ 1000VAC: 25 kA

Product Data

  • Model Number: E2NM3900WU66
  • Manufacturer: Eaton / Cutler Hammer
  • Series: E2NM
  • Frame Type: N Frame
  • Connection Type: Bolt-On
  • Configuration: U66 (UVR with LED, Left Pole Mounted, Rear Exit)
  • Warranty: 1 Year
  • Condition: New / Manufacturer Standard
  • Availability: Subject to stock

Important Note

The product image represents a base model for identification purposes only. Accessories ordered with the breaker, such as undervoltage release modules with LED indicators, can be factory-installed at no additional cost—ensure all configuration details are included in the order comment box. Always verify system compatibility and consult technical documentation or a qualified professional before installation.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 4493159332

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Austin
Grantham, US
★★★★★ 5
Great quality for the price!
I was scouring online looking for a decent 1440p 144Hz monitor but didn't want to spend a small fortune. I came across these and decided why not bite the bullet and try them, to my surprise they're actually really nice quality and very solid. Only gripe I have is that the stands are the best and could be more sturdy. Overall an extremely solid monitor if you want 144hz 1440p monitors for a great price!
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Reviewed in the United States on January 9, 2025
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Aaron
Charlottesville, US
★★★★★ 1
bad quality control
I bought two for my computer. Then 4 more for others i work with. At first they seemed ok, but now we are all dealing with issues with them needing to be turned off and on or unplugged to reset the connection to get them on. I can only expect overtime it will get worse until they all finally break completely. The picture isnt great but i wasnt expecting it to be at this price. Ive tried other cables, refress rates, resolutions ect...
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Reviewed in the United States on October 20, 2025
L
Verified Purchase
Low quality after few wash
Cuba, US
★★★★★ 5
Great
Great
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Reviewed in the United States on January 29, 2026
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DSL 82
Battle Creek, US
★★★★★ 5
Excellent Ultrawide Monitor for a MacBook Air Setup
I purchased the LG 34U60ZB-B to use primarily with my MacBook Air, and it has exceeded my expectations. Setup was incredibly simple using a USB-C to DisplayPort cable, and the monitor was recognized immediately at its full 3440 x 1440 resolution. The extra screen real estate is a game changer for productivity. I regularly have multiple documents, spreadsheets, browser windows, and email open at the same time, and the 34-inch ultrawide format makes it feel like having two monitors without the distracting bezel in the middle. Everything is sharp, crisp, and easy to read. The picture quality is excellent. Colors look vibrant and accurate, text is clear, and the WQHD resolution provides plenty of workspace without making items too small. I was particularly impressed with how good text rendering looks on macOS, which is important since most of my work involves reading and writing. The monitor feels much larger than a standard 27-inch display while still fitting comfortably on my desk. The curved screen adds to the immersive feel without being overly aggressive. It also works well for streaming videos, casual gaming, and photo viewing when I’m not working. One thing to note is that the monitor does not provide USB-C power delivery, so MacBook users will still need their charger connected separately. That wasn’t a dealbreaker for me given the monitor’s price and performance. Overall, this is an outstanding value. If you’re looking for an affordable ultrawide monitor for a MacBook Air or MacBook Pro, the LG 34U60ZB-B delivers excellent image quality, tons of workspace, and a clean, productive setup.
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Reviewed in the United States on June 13, 2026
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RA
Omaha, US
★★★★★ 5
Perfect Privacy!
best decision i ever made was to get this screen!
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Reviewed in the United States on July 24, 2025

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