BQ2B125 - 125Amp Circuit Breaker

BQ2B125 - 125Amp Circuit Breaker

The Siemens BQ2B125 is a 125-amp, 2-pole molded case circuit breaker designed for use in 120/240V electrical distribution systems. It provides overcurrent protection for your branch and feeder circuits and utilizes a common-trip mechanism that opens both poles during an overload or short-circuit condition. This breaker is part of Siemens' Type BQ product family and is intended for installation in compatible panelboards and distribution equipment.

The BQ2B125 features a bolt-on connection and includes factory-installed load-side lugs. Rated at 125 amps with a 10 kA interrupting capacity, it is commonly used in commercial buildings, multifamily properties, schools, office facilities, retail locations, and light industrial applications. Typical installations include distribution panels, load centers, feeder circuits, branch circuits, HVAC equipment, and other electrical systems requiring a 125-amp, 2-pole circuit breaker.

Key Features and Benefits

• 125 amp continuous current rating
• 2-pole common-trip configuration
• Rated for 120/240 VAC systems
• 10 kA interrupting capacity (AIR)
• Bolt-on mounting design
• Factory-installed load-side lugs
• Molded case circuit breaker construction
• Suitable for branch and feeder circuit protection
• Designed for electrical distribution applications

Technical Specifications

• Catalog Number: BQ2B125
  
• Manufacturer: Siemens
  
• Product Series: BQ
  
• Product Type: Molded Case Circuit Breaker
  
• Ampere Rating: 125 Amps
  
• Number of Poles: 2
  
• Trip Configuration: Common Trip
  
• Voltage Rating: 120/240 VAC
  
• Interrupting Rating (AIR): 10 kA
  
• Electrical Connection Type: Bolt-On
  
• Included Features: Load-Side Lugs
  
• Suitable For: Electrical Distribution
  
• Depth: 4 in.
  
• Width: 3 in.
  
• Height: 2 in.
  
• Net Weight: 0.28 kg
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL Listed: The Siemens BQ2B125 is UL 489 listed for use in low-voltage electrical distribution systems. It is manufactured to meet recognized industry requirements for circuit breaker safety and performance when installed according to applicable electrical codes and manufacturer specifications.

Where It Works Best

• The BQ2B125 is commonly installed in panelboards, load centers, feeder circuits, branch circuits, HVAC systems, and electrical distribution equipment.