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Siemens HE3A040 - Molded Case Circuit Breaker 40A 3-Pole

Siemens
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Siemens HE3A040 is a 3-pole molded case circuit breaker designed for instantaneous magnetic-only protection in industrial power distribution systems. It is rated for 40 amps at 480 volts AC with a high interrupting capacity of 25kA at 480V, ensuring reliable fault isolation in three-phase applications. The unit features a bolt-on mounting connection for secure installation and weighs 8 lb, with a compact molded case construction suited for panelboard use. This breaker complies with industry standards for overcurrent protection in commercial and industrial environments. Typical applications include motor control centers, switchboards, and branch circuit protection where instantaneous trip response is required.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Family: HE Series
  • Functions: I - Instantaneous
  • Voltage Rating: 480V
  • Current Rating: 40A
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • Protection: Magnetic Only
  • AIC Rating: 25kA@480V
  • Weight: 8 lb