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Eaton HLDB3300C - Molded Case Breaker 300A 600V 3-Pole

Cutler Hammer
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Eaton HLDB3300C is a three-pole molded case circuit breaker from the Series C family, designed for overcurrent protection in industrial power distribution systems. It carries a continuous current rating of 300A at 600VAC, with a high interrupting capacity of 65kA at 480VAC for three-phase applications. This L Frame breaker features a thermal magnetic trip mechanism providing LI (Long-Time and Instantaneous) protection functions, with a feed-thru connection style and a weight of 25 lb. It is constructed for robust performance in panelboards and switchboards, complying with industry standards for molded case circuit breakers. Typical applications include protecting feeders, motors, and transformers in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Trip, L Frame
  • Voltage Rating: 600VAC
  • Current Rating: 300A
  • Dimensions: L Frame size
  • Standards: UL, CSA, NEMA
  • Applications: Industrial power distribution, feeder protection, motor control centers
  • Switch Type: Molded Case
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: 40°C
  • Shipping Dimensions: L Frame
  • Phase: 3
  • Voltage: 600V
  • Amperage: 300A
  • AIC rating: 65kA@480V
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: L Frame
  • Trip Type: Thermal Magnetic
  • Panel Type: Industrial
  • 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: 40°C
  • 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: Panel mount
  • Hz: 50/60
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: 300A
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: 300A
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not specified
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 300A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Feed-Thru
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: L Frame
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not specified
  • Breaker Frame: L Frame
  • Current Rating: 300A
  • 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: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable