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Eaton KDB3350Y - Molded Case 350A 600V 3-Pole

Cutler Hammer
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Eaton KDB3350Y is a 3-pole molded case circuit breaker from the Series C family, designed for overcurrent protection in industrial power distribution systems. It is rated for 350A continuous current at 600VAC, with a 35kA interrupting capacity at 480VAC, and provides LI (Long-Time and Instantaneous) protection functions through a thermal magnetic trip mechanism. The unit measures 4.1 inches in depth, 5.5 inches in height, and 5.5 inches in width, weighs 11.5 lb, and features a bolt-on connection style within a K Frame size. This breaker is UL Listed and certified for 3-phase applications, ensuring compliance with North American safety standards. Typical applications include motor control centers, switchboards, and panelboards in commercial and industrial facilities requiring reliable branch circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Series C, KDB type, thermal magnetic protection
  • Voltage Rating: 600V AC
  • Current Rating: 350A
  • Dimensions: 4.1 in x 5.5 in x 5.5 in (Length/Depth x Height x Width)
  • Standards: UL Listed
  • Applications: Industrial power distribution, motor control centers, switchboards
  • Switch Type: Molded Case
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 600V
  • Amperage: 350A
  • AIC rating: 35kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: K Frame
  • Trip Type: Thermal Magnetic
  • Panel Type: Not specified
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Bolt-On
  • Hz: Not specified
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 350A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: UL Listed
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Not specified
  • Frequency Rating: Not specified
  • Phase Connection: 3-Phase
  • Standards: UL
  • Compatible Frames: K Frame
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: K Frame
  • Current Rating: 350A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 786679080030
  • GTIN: 00786679080030