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Thomas & Betts TB340 - 40A 3-Pole Molded Case Breaker 240V

Thomas & Betts
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Thomas & Betts TB340 is a 3-pole molded case circuit breaker designed for thermal magnetic protection in industrial power distribution systems. It is rated for 240V AC, 40A continuous current, and provides a 10kA interrupting capacity at 240V with LI (Long-Time and Instantaneous) trip functions for overcurrent and short-circuit protection. The unit features a plug-in connection, weighs 2 lb, and is constructed as a TB Series Type TB breaker for three-phase applications. It complies with industry standards for molded case circuit breakers, ensuring reliable performance in commercial and light industrial environments. Typical applications include branch circuit protection in panelboards, switchboards, and motor control centers where compact, plug-in thermal magnetic protection is required.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic, Plug-In
  • Voltage Rating: 240V AC
  • Current Rating: 40A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 10kA@240V
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Plug-In
  • Weight: 2 lb
  • Family: TB Series
  • Item Subcategory: Molded Case