Siemens BQ2B045 - Molded Case Circuit Breaker 45A 2-Pole
Siemens BQ2B045 - Molded Case Circuit Breaker 45A 2-Pole
Siemens BQ2B045 - Molded Case Circuit Breaker 45A 2-Pole
Siemens BQ2B045 - Molded Case Circuit Breaker 45A 2-Pole
Siemens BQ2B045 - Molded Case Circuit Breaker 45A 2-Pole
Siemens BQ2B045 - Molded Case Circuit Breaker 45A 2-Pole
Siemens BQ2B045 - Molded Case Circuit Breaker 45A 2-Pole
Siemens BQ2B045 - Molded Case Circuit Breaker 45A 2-Pole

Siemens BQ2B045 - Molded Case Circuit Breaker 45A 2-Pole

Siemens
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Siemens BQ2B045 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in single-phase electrical systems. It features a 45A current rating and a 120/240V voltage rating, housed within a compact, bolt-on frame measuring 3.937 x 2.756 x 1.969 inches and weighing 0.661 lb. This thermal-magnetic breaker, compliant with UL, CSA, and HACR standards, offers long-time and instantaneous (LI) trip functions with a 10kA interrupting capacity at 240V for robust safety. Its lug terminals accommodate wire sizes from 6 to 12 AWG (Al) or 14 AWG (Cu), making it suitable for installation in Siemens panelboards across commercial and light industrial applications.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic Protection, Standard Breaker, Bolt-on Connection
  • Voltage Rating: 120/240V AC
  • Current Rating: 45A
  • Frame Size: 125A/BQ
  • Poles: 2
  • Phase: 1
  • AIC Rating: 10kA @ 240V
  • Functions: LI (Long-Time and Instantaneous Trip)
  • Terminal Connection: Lug
  • MCM/Wire Size: Min. 12 AWG (Al) / 14 AWG (Cu), Max. 6 AWG
  • Dimensions: 3.937 x 2.756 x 1.969 in (100 x 70 x 50 mm approx.)
  • Weight: 0.661 lb
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Standards & Certification: UL Listed, CSA, HACR Rated
  • Panel Type: Siemens Panelboards
  • Breaker Type: Standard
  • Protection: Thermal Magnetic
  • Connection: Bolt-on
  • Family: BQ Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 783643161214
  • GTIN: 00783643161214