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Siemens HHLXD63B350 - Molded Case Circuit Breaker 350A 600V

Siemens
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Siemens HHLXD63B350 is a Sentron Series 3-pole, 350 amp, 600 volt molded case circuit breaker designed for reliable overcurrent protection in industrial and commercial power distribution systems. This thermal-magnetic breaker provides LI (Long-Time and Instantaneous) protection functions and is rated for 100kA interrupting capacity at 480V, with a maximum voltage rating of 600V. The unit features a bolt-on connection type, an LD Frame size, weighs 25 lb, and is constructed for 3-phase operation, though it does not include lugs. It is UL 489 listed and IEC 60947-2 compliant, rated for reverse fed applications and standard 40°C environments. Typical applications include use in switchboards, panelboards, and other power distribution equipment requiring high interrupting capacity and reliable thermal-magnetic protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Manufacturer: Siemens
  • Series: Sentron Series
  • Model: HHLXD63B350
  • Current Rating: 350A
  • Voltage Rating: 600V
  • Poles: 3
  • Phase: 3
  • Frame Size: LD Frame
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • AIC Rating: 100kA at 480V
  • Weight: 25 lb
  • UL 489 listed
  • IEC 60947-2 compliant
  • Reverse fed application rated
  • Standard 40°C operation