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GE TEF340ST12 - Molded Case Circuit Breaker 40A 480V (3-Pole with Shunt Trip)

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GE TEF340ST12 is a 3-pole molded case circuit breaker designed for overcurrent protection and remote tripping in commercial and industrial power systems. This 40A, 480V AC unit features a factory-installed 120-277VAC shunt trip for remote operation and a thermal-magnetic trip unit for reliable fault response. The breaker weighs 5.19 lb, utilizes bolt-on mounting, and includes load side lug terminals for secure wiring connections. It is UL 489 Listed for use in grounded 480Y/277V AC systems with a standard interrupting capacity of 14kAIC at 480V. Typical applications include panel upgrades, replacements, and new installations requiring remote circuit interruption in commercial and industrial environments.

Key Features & Specifications
  • Part Number: TEF340ST12
  • Manufacturer: GE
  • Series/Frame: TEY
  • Poles: 3
  • Amperage: 40A
  • Voltage: 480V AC
  • Mounting Type: Bolt-On
  • Interrupt Rating: 14kAIC @ 480V
  • Trip Unit: Thermal-Magnetic
  • Shunt Trip: 120-277VAC
  • Terminal Type: Load Side Lug
  • Certifications: UL 489 Listed
  • Weight: 5.19 lb