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Eaton Cutler-Hammer MD3800F - Molded Case Circuit Breaker Frame

Cutler Hammer
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Eaton Cutler-Hammer MD3800F is a molded case circuit breaker frame designed for providing robust overcurrent protection in demanding three-phase industrial power distribution systems. It features a 600V AC voltage rating and an 800A current rating, housed within a durable 34 lb thermal-magnetic trip unit frame that offers long-time and instantaneous (LI) protection functions with a 50kA interrupting capacity at 480V. The breaker is constructed as a three-pole, bolt-on configuration, complying with relevant industry standards for safety and performance in commercial and industrial applications. This frame is typically integrated into panelboards and switchgear to protect electrical circuits from overloads and short circuits, noting that the trip unit and lugs are separate components not included with the frame.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker Frame, Series C, MD Type, Thermal-Magnetic Protection
  • Voltage Rating: 600V AC
  • Current Rating: 800A
  • Frame Size: 800A
  • Trip Type: Thermal Magnetic
  • Functions: Long-Time and Instantaneous (LI)
  • AIC Rating: 50kA @ 480V
  • Phase: 3
  • Poles: 3
  • Connection: Bolt-On
  • Weight: 34 lb
  • Configuration: Frame only (Trip unit and lugs not included)
  • Protection: Overcurrent
  • Standards: Designed to meet applicable industry standards for circuit protection
  • Applications: Industrial power distribution, panelboards, switchgear


Product Identification
  • Manufacturer Part Number: MD3800F