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Siemens HLXD63B300 - Molded Case 300A 600V 3-Pole Thermal Magnetic

Siemens
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Siemens HLXD63B300 Circuit Breaker - Molded Case 300A 600V 3-Pole Thermal Magnetic The Siemens HLXD63B300 is a 3-pole, 300 amp, 600 volt molded case circuit breaker from the Sentron Series, designed to provide reliable overload and short-circuit protection for industrial power distribution systems. This unit features a thermal magnetic trip mechanism with LI (Long-Time and Instantaneous) functions, delivering a high interrupting capacity of 65kA at 480V AC to handle severe fault conditions. Constructed with an LD Frame and a bolt-on connection type, the breaker weighs 25 lb and is built for secure, permanent installation in compatible panelboards and switchboards. It complies with industry standards for molded case circuit breakers, ensuring robust performance in commercial and industrial environments. Typical applications include protecting feeders, motors, and branch circuits in manufacturing facilities, data centers, and large commercial buildings where high fault currents are present.

Key Features & Specifications
  • Manufacturer: Siemens
  • Item Subcategory: Molded Case
  • Family: Sentron Series
  • Type: HLXD
  • Weight: 25 lb
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: LD Frame
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 65kA@480V
  • Phase: 3
  • Current Rating: 300A
  • Amperage: 300A
  • Interrupt Rating: 65kA at 480V
  • Frame Type: HLXD6
  • Trip Unit: Thermal Magnetic
  • Series: Sentron Series


Additional Info: This item does not include Lugs. If you would like lugs please reach out to a sales rep with wiring specs and we can help you with the lugs part number.