BQ3B050 - 50Amp Circuit Breaker

BQ3B050 - 50Amp Circuit Breaker

The Siemens BQ3B050 is a 50 amp, 3-pole bolt-on circuit breaker used in compatible Siemens Type BQ panelboards and electrical distribution systems. With a 240VAC rating and a 10kAIC interrupting capacity, it is intended for three-phase branch circuit protection in commercial and industrial applications. Its common-trip design causes all three poles to open simultaneously when a fault is detected, helping protect your connected equipment and wiring.

This breaker includes load-side lugs and mounts directly into compatible panelboards using a bolt-on connection. It is commonly found protecting HVAC equipment, motor loads, pumps, compressors, control panels, and other three-phase circuits where a 50-amp breaker is required. When you're replacing an existing breaker, matching the original type, pole configuration, voltage rating, and amperage is important, and the BQ3B050 provides the form and fit expected from the Siemens Type BQ series.

Key Features and Benefits

• Siemens Type BQ molded case circuit breaker
• 50 amp current rating
• Three-pole configuration
• Common-trip operation
• 240VAC rating
• 10kAIC interrupting capacity
• Bolt-on mounting design
• Load-side lugs included
• Suitable for branch circuit protection
• Compatible with Siemens Type BQ panelboards
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: BQ3B050
  
• Series: Type BQ
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage Rating: 50 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 240 VAC
  
• Interrupting Capacity: 10 kAIC
  
• Trip Type: Common Trip
  
• Mounting Type: Bolt-On
  
• Electrical Connection: Bolt-On
  
• Width: 3 in.
  
• Height: 3 in.
  
• Depth: 3 in.
  
• Net Weight: 0.948 lbs.
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL 489 Listed
• Suitable for low-voltage electrical distribution applications
• Designed for branch circuit protection
• Manufactured to Siemens specifications
• Active product lifecycle status
  

Where It Works Best

• The Siemens BQ3B050 is commonly used in commercial buildings, manufacturing facilities, warehouses, schools, and similar environments with three-phase power distribution.