Eaton Cutler Hammer E2M3800MXWU66 800A 3 Pole Molded Case Mining Circuit Breaker – Bolt On – 600VAC

The Eaton Cutler Hammer E2M3800MXWU66 is a high-capacity molded case mining circuit breaker designed for demanding industrial and mining electrical systems. Rated at 800 amps with a 3-pole configuration, it features an interchangeable magnetic-only trip unit that provides instantaneous short-circuit protection in systems where overload protection is managed separately. This model includes the U66 undervoltage release with LED indicator, enhancing safety by automatically tripping the breaker during low-voltage conditions while providing visual status indication. Built with rugged molded case construction and secure bolt-on mounting, it is engineered for reliable service in harsh environments up to 600VAC.

Product Specifications

• Brand: Eaton / Cutler Hammer
• Model Number: E2M3800MXWU66
• Amperage: 800 Amp
• Number of Poles: 3 Pole
• Breaker Type: Molded Case Mining Circuit Breaker
• Mount Type: Bolt On
• Frame Style: E2M / M Frame
• Trip Unit Type: Interchangeable Magnetic Only
• Frequency: 50/60 Hz
• Configuration: U66 Factory Installed Option
• Standard Lug Type: Without Terminals Standard

Technical Specifications

• Magnetic-only trip unit for instantaneous short-circuit protection
• Requires separate overload protection depending on application design
• Heavy-duty molded case construction for mining and industrial environments
• Bolt-on mounting for secure installation
• Operating temperature rating: 40°C
• Trip Setting Range: 2000 – 4000
• U66 Option Includes: 120 VAC Undervoltage Release (UVR)
• U66 includes LED indicator
• Mounted on left pole with rear exit wiring
• Interchangeable trip unit design for flexible system use

Voltage and Ratings

• Maximum Voltage: 600 VAC
• Rated Current: 800 Amp
• Interrupting Capacity: 65 kA @ 240VAC
• Interrupting Capacity: 35 / 50 kA @ 480VAC
• Interrupting Capacity: 25 kA @ 600VAC
• Interrupting Capacity: 22 kA @ 250VDC
• Frequency Rating: 50/60 Hz
• UVR Control Voltage: 120 VAC

Product Data

• Condition: New / Surplus / Reconditioned (subject to availability)
• Warranty: 1 Year
• Product Category: Industrial Circuit Breaker
• Suitable Applications: Mining Systems, Industrial Power Distribution, Motor Circuits, Heavy-Duty Feeders, Critical Protection Systems
• Manufacturer Series: Eaton E2M Series
• Connection Type: Bolt On
• Installed Accessories: Undervoltage Release with LED (U66 Option)
• Lug Type: Without Terminals Standard

Important Note

Product image may represent a standard base model and is for identification purposes only. This unit includes the factory-installed U66 accessory option and uses a magnetic-only trip system requiring separate overload protection depending on application design. Always verify voltage rating, trip settings, accessory compatibility, and installation suitability before purchase or use.

Returns are easy

You may return items within 30 days of delivery for a refund.

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