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Siemens BQ2B04500S01 - 45A 2-Pole Shunt Trip Breaker (240V)

Siemens
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Siemens BQ2B04500S01 is a 2-pole, 45A molded case circuit breaker from the BQ Series, designed for overcurrent and short-circuit protection in Siemens panelboards. This thermal-magnetic breaker operates at 240V AC with a 10kA@240V interrupting capacity, providing LI (Long-Time and Instantaneous) protection functions. The unit features a bolt-on connection with lug terminals, weighs 1.08 lb, and is constructed with a 125A/BQ frame size for single-phase applications. It is UL Listed, HACR Rated, and CSA certified, meeting rigorous industry standards for safety and performance. Typical industrial applications include branch circuit protection in commercial and light industrial power distribution systems.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker with Thermal Magnetic Protection
  • Voltage Rating: 240V
  • Current Rating: 45A
  • Dimensions: 125A/BQ Frame Size
  • Standards: HACR Rated, UL Listed, CSA Certified
  • Applications: Branch circuit protection in Siemens panelboards for commercial and light industrial use
  • Switch Type: Shunt Trip
  • Configuration: 2-Pole, Single-Phase
  • Coil Voltage Maximum: 120V
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 1
  • Voltage: 240V
  • Amperage: 45A
  • AIC rating: 10kA@240V
  • Connection: Bolt-On
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: 125A/BQ
  • Trip Type: Thermal Magnetic
  • Panel Type: Siemens Panelboards
  • Breaker Type: Shunt Trip
  • Control Voltage Minimum: Not specified
  • Control Voltage Maximum: 120V
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not specified
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Bolt-On
  • Hz: Not specified
  • Coil Material: Not specified
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not specified
  • Coil Voltage Minimum: Not specified
  • Wire: Not specified
  • Amperage Maximum: 45A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Shunt Trip
  • Wire Size: Not specified
  • Certification: CSA, HACR, UL
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Lug
  • Frequency Rating: Not specified
  • Phase Connection: Single-Phase
  • Standards: HACR Rated, UL Listed
  • Compatible Frames: 125A/BQ
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not specified
  • Breaker Frame: 125A/BQ
  • Current Rating: 45A
  • Reverse Standoff Voltage: Not specified
  • Watts: Not specified
  • Peak Pulse Current: Not specified
  • Breakdown Voltage (MIN VBR@IT ) (V): Not specified
  • Breakdown Voltage (VBR@IT) (V): Not specified
  • Polarity: Not specified
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified


Product Identification
  • UPC: 662643781335
  • GTIN: 00662643781335