BQ3B05000S01 - 50Amp Circuit Breaker

BQ3B05000S01 - 50Amp Circuit Breaker

The Siemens BQ3B05000S01 is a 50 amp, 3-pole circuit breaker designed for use in compatible Siemens Type BQ panelboards. Rated for 240VAC, it provides branch circuit protection for three-phase electrical systems and includes a factory-installed 120V shunt trip for applications that require remote breaker operation.

Its common-trip design opens all three poles simultaneously during an overload or short-circuit condition. The breaker mounts using a bolt-on connection and comes with load-side lugs already included. This configuration is commonly used in commercial and industrial facilities where electrical systems incorporate emergency shutdown functions, fire safety controls, access control systems, or other equipment requiring remote tripping capability.

Whether you're replacing an existing breaker or maintaining an established electrical distribution system, the BQ3B05000S01 offers the same form, fit, and operating characteristics expected from the Siemens Type BQ product line. Built for long service life, it remains a practical choice for keeping compatible equipment in operation.

Key Features and Benefits

• Siemens Type BQ molded case circuit breaker
• 50 amp current rating
• Three-pole configuration
• Common-trip operation
• Factory-installed 120V shunt trip
• Rated for 240VAC systems
• 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: BQ3B05000S01
  
• Product Series: BQ
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage Rating: 50 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 240 VAC
  
• Interrupting Rating: 10 kAIC
  
• Shunt Trip Voltage: 120 VAC
  
• Trip Type: Common Trip
  
• Mounting Type: Bolt-On
  
• Electrical Connection Type: Bolt-On
  
• Width: 4 in.
  
• Height: 4 in.
  
• Depth: 6 in.
  
• Net Weight: 1.543 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

• This breaker is commonly installed in commercial buildings, manufacturing facilities, warehouses, schools, and other properties with three-phase electrical distribution.