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Siemens HE42B040 - Molded Case Circuit Breaker 40A 480V

Siemens
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Siemens HE42B040 is a 2-pole molded case circuit breaker from the HE Series, designed for overload and short circuit protection in power distribution systems. It is rated for 40 amps at 480 volts AC, with a thermal-magnetic trip unit providing LI (Long-Time and Instantaneous) protection functions. The breaker features a bolt-on mounting type, weighs 5 lb, and offers a high interrupting capacity of 42 kA at 480V. It is UL Listed and CSA Certified, meeting industry standards for reliability in commercial and industrial environments. This breaker is suitable for use in panelboards, switchboards, and motor control centers requiring robust circuit protection.

Key Features & Specifications
  • Type: Molded Case
  • Family: HE Series
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 480 VAC
  • Current Rating: 40 Amps
  • Number of Poles: 2
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 42,000 A at 480 VAC
  • Phase: 1
  • Weight: 5 lb
  • Series/Frame: HED4
  • Certifications: UL Listed, CSA Certified