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Siemens HE3A045 - 45A 3-Pole Molded Case Circuit Breaker

Siemens
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Siemens HE3A045 is a 3-pole molded case circuit breaker from the HE Series, designed for instantaneous magnetic-only overcurrent protection in industrial power distribution systems. It is rated for 45 amps at 480V AC with a 25kA interrupting capacity at 480V, ensuring reliable fault interruption in three-phase applications. The unit features a bolt-on mounting type for secure installation and weighs 8 lb, with a compact construction suited for panelboard integration. This breaker complies with industry standards for performance and safety under normal and fault conditions. Typical applications include motor control centers, switchboards, and commercial electrical systems requiring dedicated short-circuit protection.

Key Features & Specifications
  • Type: Molded Case
  • Family: HE Series
  • Type: HE
  • Functions: I - Instantaneous
  • Voltage Rating: 480V
  • Current Rating: 45A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • Protection: Magnetic Only
  • AIC rating: 25kA@480V
  • Weight: 8 lb
  • Trip Unit: Thermal-Magnetic