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Siemens BQ3B050H - 3-Pole Molded Case Circuit Breaker 50A

Siemens
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Siemens BQ3B050H is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 50A current rating and a 240V voltage rating, housed within a compact, bolt-on unit measuring 2.563" x 3.00" x 3.122" and weighing 1.014 lb with lug terminals suitable for wire sizes from 8 AWG to 2 AWG (Al) or 4 AWG (Cu). This thermal-magnetic breaker is HACR rated and UL Listed/CSA certified, ensuring compliance with industry safety standards for use in commercial and light industrial applications. It is engineered for installation in Siemens panelboards, offering a high interrupting capacity of 22kA at 240V AC with long-time and instantaneous trip functions for robust circuit protection across an operating temperature range of -25°C to 70°C.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, High Interrupting Capacity (BQH)
  • Voltage Rating: 240V AC
  • Current Rating: 50A
  • Dimensions: 2.563" H x 3.00" W x 3.122" D (65.1mm x 76.2mm x 79.3mm)
  • Standards: UL Listed, CSA Certified, HACR Rated
  • Applications: Three-phase power distribution in Siemens panelboards for commercial and light industrial systems
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-on
  • Phase: 3
  • AIC Rating: 22kA @ 240V
  • Connection: Bolt-on
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: 125A/BQH
  • Panel Type: Siemens Panelboards
  • Breaker Type: High Interrupting Capacity
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • MCM Size: Min. Wire Size 8 AWG, Max. Wire Size 2 AWG (Aluminum) or 4 AWG (Copper)
  • Terminal Connection: Lug
  • Certification: CSA, HACR, UL
  • Weight: 1.014 lb


Product Identification
  • UPC: 783643161719
  • GTIN: 00783643161719