Eaton Cutler Hammer Mining E2NM3800MWU66 800A 3 Pole Molded Case Mining Circuit Breaker – Bolt-On Mount – 1000VAC

The Eaton E2NM3800MWU66 is a high-capacity molded case mining circuit breaker designed for demanding industrial and mining environments. Built on the N-frame platform with a non-interchangeable magnetic-only trip unit, it provides reliable short-circuit protection and consistent performance under heavy-duty conditions. Rated at 800 amperes and supporting up to 1000VAC, this breaker is suitable for robust power distribution systems. The U66 configuration includes a 120VAC undervoltage release (UVR) with LED indicator, left pole mounting, and rear exit connection, providing enhanced visibility and operational control for critical installations.

Product Specifications

• Frame Style: E2NM (N Frame)
• Breaker Type: Molded Case Mining Circuit Breaker
• Trip Unit Type: Non-Interchangeable Magnetic-Only
• Amperage Rating: 800 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: Magnetic-Only
• Trip Setting Range: 500–2500 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: E2NM3800MWU66
• Manufacturer: Eaton / Cutler Hammer
• Series: E2NM
• Frame Type: N Frame
• Connection Type: Bolt-On
• Configuration: U66 (UVR + 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 UVR/LED configurations, can be factory-installed at no additional cost—ensure all configuration details are provided in the order comment box. Always verify system compatibility and consult technical documentation or a qualified professional before installation.

Returns are easy

You may return items within 10 days of delivery for a refund.

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