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Thomas & Betts QB-45 - Molded Case 45A 240V 1-Pole

Thomas & Betts
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Thomas & Betts QB-45 is a 1-pole molded case circuit breaker from the QB Series, designed to provide LI (Long-Time and Instantaneous) thermal magnetic protection for electrical circuits. This bolt-on breaker is rated for 45A at 240V with a 10kA interrupting capacity at 120V, operating on a single-phase system. The unit weighs 2 lb and features a compact construction suitable for industrial panelboards and load centers. It complies with applicable UL and NEMA standards for overcurrent protection in commercial and industrial environments. Typical applications include branch circuit protection in lighting, heating, and motor control panels.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, QB Series
  • Voltage Rating: 240V
  • Current Rating: 45A
  • Poles: 1
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 10kA@120V
  • Phase: 1
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 2 lb
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 60 Hz
  • Phase Connection: 1-Phase
  • Standards: UL, NEMA
  • Installation Type: Panelboard
  • Item QTY: 1
  • Breaker Frame: QB
  • Current Rating: 45A
  • Polarity: Single
  • Operating Temperature Maximum Celsius: 40°C


Product Identification
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  • GTIN: