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Square D Q1B245 - 2-Pole 45A 240V Molded Case Breaker

Square D
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The Square D Q1B245 is a 2-pole molded case circuit breaker designed for thermal-magnetic overcurrent protection in 1-phase electrical systems. It is rated for 45A at 240V AC with a 10kA interrupting capacity at 240V, providing long-time and instantaneous (LI) trip functions for reliable fault clearing. This bolt-on breaker features a compact construction weighing 2 lb and is part of the Q1B Series, built for industrial panelboard applications. It complies with industry standards for overcurrent protection in commercial and light industrial environments. Typical applications include branch circuit protection in load centers and panelboards requiring 240V single-phase service.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 240V AC
  • Current Rating: 45A
  • Poles: 2
  • Phase: 1
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 10kA@240V
  • Functions: LI - Long-Time and Instantaneous
  • Family: Q1B Series
  • Weight: 2 lb
  • Item Subcategory: Molded Case


Product Identification
  • UPC: Not specified
  • GTIN: Not specified