GE

GE TEY340ST12 40 Amp 3 Pole Thermal Magnetic Circuit Breaker – Bolt-On – 277/480V AC

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SKU: TEY340ST12 GTIN/UPC: 783164196641
Regular price $662.20
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The GE TEY340ST12 40 Amp three-pole molded case circuit breaker is designed for reliable protection in commercial and industrial power distribution systems. Part of the GE Q-Line TEY series, it provides thermal-magnetic LI (Long-Time and Instantaneous) protection to safeguard electrical circuits from overloads and short circuits. This model includes a factory-installed 120–277VAC shunt trip, allowing for remote tripping functionality for enhanced operational control and safety. Its bolt-on mounting design ensures a secure and stable connection in compatible panelboards. Rated at 14kA at 480V, it is built for dependable performance in demanding environments.

Voltage and Rating

  • Current Rating: 40 Amps
  • Voltage Rating: 277/480V AC
  • Frequency: 50/60 Hz
  • Interrupting Capacity: 14 kA @ 480V
  • Phase: 3 Phase

Key Specifications

  • Breaker Type: Molded Case Circuit Breaker (MCCB)
  • Trip Function: LI (Long-Time & Instantaneous)
  • Protection Type: Thermal Magnetic
  • Number of Poles: 3-Pole
  • Series: GE Q-Line TEY
  • Family: Q-Line
  • Mounting Style: Bolt-On
  • Application: Commercial and industrial electrical distribution
  • Shunt Trip: Factory-installed 120–277VAC
  • Temperature Rating: 40°C
  • Connection Type: Bolt-On
  • Category: 3-Pole Molded Case

Technical Specifications

  • Wire/Terminal Connection: Standard lug connection (bolt-on system)
  • Trip Technology: Thermal Magnetic
  • Trip Adjustability: Fixed
  • Interrupt Rating: 14 kA @ 480V
  • Standards: CSA Approved
  • Construction Type: Molded case design
  • Functions: Long-Time and Instantaneous protection

Product Data

  • Manufacturer: General Electric
  • Part Number: TEY340ST12
  • Series: TEY
  • Family: Q-Line

Dimensions

  • Height: 3 in
  • Width: 3.1/16 in
  • Depth: 5.1/4 in
  • Weight: 2.081 lbs


  • Type Thermal Magnetic
  • Vendor GE
  • Brand GE

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You may return items within 30 days of delivery for a refund.

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My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.