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Siemens BQ3B040H - 3-Pole 40A Circuit Breaker (22kA AIC, 240V)

Siemens
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Siemens BQ3B040H is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 40A current rating and a 240V voltage rating, housed within a compact, bolt-on design measuring 2.756" x 2.756" x 3.937" (70mm x 70mm x 100mm) and weighing 1.213 lb. This thermal-magnetic breaker is HACR rated and UL Listed/CSA certified for safety, with an interrupting capacity of 22kA at 240V, making it suitable for use in Siemens panelboards and industrial control panels. It operates reliably across a temperature range of -25°C to 70°C (-13°F to 158°F).

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection with Long Time and Instantaneous Trip Functions
  • Voltage Rating: 240V AC
  • Current Rating: 40A
  • Dimensions: 2.756 in. x 2.756 in. x 3.937 in. (70 mm x 70 mm x 100 mm)
  • Standards: UL Listed, CSA Certified, HACR Rated
  • Applications: Three-phase power distribution in Siemens panelboards and industrial control systems
  • Phase: 3
  • AIC Rating: 22kA @ 240V
  • Connection: Bolt-on
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: 125A/BQH
  • Breaker Type: High Interrupting Capacity (HIC)
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Panel Type: Siemens Panelboards
  • Terminal Connection: Lug
  • MCM Size / Wire Range: Minimum 8 AWG, Maximum 2 AWG (Aluminum) or 4 AWG (Copper)
  • Certification: CSA, HACR, UL
  • Weight: 1.213 lb


Product Identification
  • UPC: 783643161702
  • GTIN: 00783643161702