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Eaton MDLB3450W - Molded Case 450A 600V 3-Pole

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Eaton MDLB3450W is a three-pole, 450-amp molded case circuit breaker from the Series C family, designed for thermal-magnetic overcurrent protection in industrial power distribution systems. It operates at a maximum voltage rating of 600V and 3-phase, with a high interrupting capacity of 50kA at 480V, and features LI (Long-Time and Instantaneous) trip functions for precise fault response. This bolt-on unit weighs 33 lb and is built on an M Frame, but does not include lugs for wiring connections. It complies with UL standards for reliable performance in demanding electrical environments. Typical applications include commercial and industrial switchboards, panelboards, and motor control centers requiring robust circuit protection.

Key Features & Specifications
  • Manufacturer: Eaton
  • Item Subcategory: Molded Case
  • Family: Series C
  • Type: MDLB
  • Weight: 33 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: M Frame
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 50kA@480V
  • Phase: 3
  • Current Rating: 450A
  • Interrupt Rating: 65 kAIC at 240 Vac
  • Mounting Type: Feed-Thru
  • Trip Unit: Fixed Thermal, Fixed Magnetic
  • Certifications: UL Listed


Part Number: MDLB3450W