BQ3B050H - 50Amp Circuit Breaker

BQ3B050H - 50Amp Circuit Breaker

The Siemens BQ3B050H is a 50 amp, 3-pole circuit breaker designed for use in compatible Siemens Type BQ panelboards and electrical distribution systems. Rated for 240VAC, it provides branch circuit protection for three-phase equipment and offers a 22kA interrupting capacity for installations where higher available fault current is a consideration.

Built with a common-trip design, the breaker opens all three poles simultaneously when an overload or short circuit occurs. The bolt-on mounting configuration provides a secure fit within the panel, and load-side lugs are included to help simplify installation. You'll often find this breaker protecting HVAC equipment, motor loads, pumps, compressors, and other three-phase systems in commercial and industrial facilities.

For maintenance teams and electrical contractors working with existing Siemens equipment, the BQ3B050H is a straightforward replacement option that matches the configuration commonly specified in many original installations. Its combination of a 50 amp rating, three-pole design, and higher interrupting capacity makes it a practical choice for a wide range of 240-volt applications.

Key Features and Benefits

• Siemens Type BQH molded case circuit breaker
• 50 amp current rating
• Three-pole configuration
• Common-trip operation
• Rated for 240VAC applications
• 22kAIC interrupting capacity
• Bolt-on mounting design
• Load-side lugs included
• Designed for branch circuit protection
• Compatible with Siemens Type BQ panelboards
• Suitable for commercial and industrial electrical systems
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: BQ3B050H
  
• Product Type: Molded Case Circuit Breaker
  
• Breaker Family: BQH
  
• Number of Poles: 3
  
• Amperage Rating: 50 Amps
  
• Voltage Rating: 240 VAC
  
• Interrupting Rating: 22 kAIC
  
• Trip Type: Common Trip
  
• Mounting Type: Bolt-On
  
• Electrical Connection Type: Bolt-On
  
• Width: 3 in.
  
• Height: 3 in.
  
• Depth: 4 in.
  
• Net Weight: 1.014 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 BQ3B050H is commonly used in commercial buildings, manufacturing facilities, warehouses, schools, and other properties that rely on three-phase power distribution.