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Siemens HE42B090 - Molded Case Circuit Breaker 90A 480V

Siemens
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Siemens HE42B090 is a 2-pole molded case circuit breaker from the HE Series, designed to provide thermal magnetic overcurrent protection for industrial and commercial power distribution systems. It is rated for 480V AC and 90A, with a 42kA interrupting capacity at 480V, and features LI (Long-Time and Instantaneous) trip functions for reliable fault clearance. The bolt-on unit weighs 5 lb and utilizes a compact HED frame construction for integration into Sentron panelboards and SB switchboards. This single-phase breaker complies with industry standards for demanding electrical system requirements, ensuring robust performance in branch circuit protection. Typical applications include protecting feeders and branch circuits in manufacturing facilities, commercial buildings, and other heavy-use electrical environments.

Key Features & Specifications
  • Manufacturer: Siemens
  • Model: HE42B090
  • Type: HE
  • Item Subcategory: Molded Case
  • Family: HE Series
  • Poles: 2
  • Current Rating: 90 Amps
  • Voltage Rating: 480V AC
  • Interrupt Rating: 42kA at 480V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Bolt-On
  • Phase: 1
  • Frame Type: HED
  • Weight: 5 lb
  • Series: Sentron