Cutler-Hammer MDL3800F - 800A, 600VAC / 250VDC, 3-Pole, Circuit Breaker

The Cutler-Hammer MDL3800F is a high-capacity 3-Pole circuit breaker designed to deliver reliable overcurrent protection for demanding electrical systems. With an 800A rating and a versatile voltage range of up to 600VAC or 250VDC, this unit is built to handle both heavy AC power distribution and DC control circuits with confidence. The 3-Pole configuration ensures balanced protection across all phases in three-phase installations, simplifying wiring and coordination in complex panels.

Key specifications

• Current rating: 800 A
• Voltage rating: 600 VAC / 250 VDC
• Poles: 3-Pole
• Type: Circuit Breaker

Why the MDL3800F stands out

• The 3-Pole design provides synchronized protection across all phases, helping to prevent imbalances that can stress equipment and cables in motor circuits and distribution networks.
• An 800A rating supports large loads and demanding industrial equipment, reducing the need for multiple intermediate devices in high‑demand environments.
• With a 600VAC / 250VDC rating, it covers both primary power distribution and DC control circuits common in commercial, industrial, and OEM applications.
• Ideal for use in panelboards, switchboards, and control panels where dependable protection and compact, reliable operation matter.
• Engineered for environments where safe, predictable operation minimizes downtime and protects critical infrastructure.

Ideal use cases

• Main overcurrent protection in large distribution panels and switchboards within industrial facilities
• Protection for motor control centers that operate three-phase equipment and heavy loads
• Power distribution solutions in commercial settings with demanding electrical requirements
• OEM equipment footprints needing a robust, high-capacity circuit breaker to safeguard circuits and controllers

Practical considerations

• Ensure compatibility with your panelboard or enclosure that accepts 3-Pole devices and supports 800A rated protection
• Plan for both 600VAC and 250VDC sections of the system to maximize protection where AC power and DC control circuits share the same installation
• Coordinate protection strategy with downstream protective devices to optimize safety and minimize nuisance trips