Siemens BQ3B045H - Molded Case Circuit Breaker 45A 3P (22kA AIC)
Siemens BQ3B045H - Molded Case Circuit Breaker 45A 3P (22kA AIC)

Siemens BQ3B045H - Molded Case Circuit Breaker 45A 3P (22kA AIC)

Siemens
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Siemens BQ3B045H is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 45A current rating and a 240V AC voltage rating, housed within a compact 3-inch cube frame weighing 1.08 lb. This thermal-magnetic breaker is constructed with bolt-on lug terminals compatible with wire sizes from 8 AWG to 2 AWG (Al) or 4 AWG (Cu) and is HACR rated and UL listed for safety compliance. It is typically applied in industrial and commercial settings within Siemens panelboards for feeder and branch circuit protection, offering a high interrupting capacity of 22kA.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, BQH Type, Thermal Magnetic Protection
  • Voltage Rating: 240V AC
  • Current Rating: 45A
  • Dimensions: 3 in x 3 in x 3 in (76.2 mm x 76.2 mm x 76.2 mm)
  • Standards: HACR Rated, UL Listed
  • Applications: Feeder and branch circuit protection in Siemens panelboards for industrial/commercial use
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-on
  • Phase: 3
  • AIC Rating: 22kA @ 240V
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: 125A/BQH
  • Breaker Type: High Interrupting Capacity
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Connection: Bolt-on
  • Terminal Connection: Lug
  • MCM Size: Min. Wire Size 8 AWG, Max. Wire Size 2 AWG (Al), 4 AWG (Cu)
  • Panel Type: Siemens Panelboards
  • Certification: CSA, HACR, UL
  • Weight: 1.08 lb (0.49 kg)
  • Family: BQ Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 783643529809
  • GTIN: 00783643529809