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Siemens EF3A040 - Molded Case 40A 3-Pole (600V)

Siemens
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Siemens EF3A040 is a 3-pole, 40A molded case circuit breaker from the EF Series, designed for instantaneous magnetic-only overcurrent protection in industrial power distribution systems. It is rated for 600V AC operation with an interrupting capacity of 14kA at 480V, and features a bolt-on connection style for secure panelboard installation. Weighing 8 lb, this compact three-phase breaker utilizes a Type EF frame with an instantaneous trip function (I) to provide fast response to short-circuit faults. The unit complies with industry standards for molded case circuit breakers, ensuring reliable performance in demanding environments. Typical applications include motor control centers, switchgear, and commercial electrical panels requiring dedicated magnetic-only protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Manufacturer: Siemens
  • Series/Frame: EF
  • Number of Poles: 3
  • Current Rating: 40A
  • Voltage Rating: 600V AC
  • Interrupt Rating: 14kA @ 480V
  • Protection: Magnetic Only
  • Functions: I - Instantaneous
  • Connection: Bolt-On
  • Phase: 3
  • Weight: 8 lb


Part Number: EF3A040