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Siemens HE3B040 - 3-Pole 40A Molded Case Circuit Breaker

Siemens
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Siemens HE3B040 is a 3-pole molded case circuit breaker from the HE Series, designed for LI (Long-Time and Instantaneous) protection against overloads and short circuits. It is rated for 40A continuous current at 480V AC with a 25kA interrupting capacity at 480V, utilizing thermal-magnetic trip technology for reliable overcurrent protection. The unit features a bolt-on connection, weighs 8 lb, and is constructed for three-phase industrial power distribution systems. It complies with applicable UL and NEMA standards for molded case circuit breakers. Typical applications include branch circuit protection in panelboards, switchboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, HE Series, Thermal Magnetic
  • Voltage Rating: 480V AC
  • Current Rating: 40A
  • Poles: 3
  • Connection: Bolt-On
  • Protection: LI - Long-Time and Instantaneous
  • AIC rating: 25kA@480V
  • Phase: 3
  • Weight: 8 lb
  • Functions: LI - Long-Time and Instantaneous
  • Standards: UL, NEMA
  • Applications: Industrial power distribution, panelboards, switchboards, motor control centers


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