BQ3B020 - 20Amp Circuit Breaker

BQ3B020 - 20Amp Circuit Breaker

The Siemens BQ3B020 is a 20 amp, 3-pole bolt-on circuit breaker built for reliable protection in 240V electrical systems. Designed as a common-trip breaker, it disconnects all three poles at once if an overload or short circuit occurs, helping keep your equipment and wiring safe. Its compact molded case design fits seamlessly into compatible Siemens Type BQ panelboards, and included load-side lugs make installation straightforward. With a 10 kA interrupting rating and UL 489 listing, this breaker is a practical choice for commercial, industrial, and light-duty three-phase applications. It’s well-suited for motor loads, HVAC systems, pumps, compressors, and other 240V circuits that need dependable branch circuit protection.

Key Features and Benefits

• Siemens Type BQ molded case circuit breaker
• 20 amp current rating, 3-pole configuration
• Common-trip design for simultaneous pole protection
• Rated for 240 VAC electrical systems
• 10 kAIC interrupting capacity
• Bolt-on mounting for secure installation
• Load-side lugs included
• Designed for branch circuit protection in commercial and industrial systems
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: BQ3B020
  
• Product Type: Molded Case Circuit Breaker
  
• Breaker Series: Type BQ
  
• Number of Poles: 3
  
• Amperage Rating: 20 Amps
  
• Voltage Rating: 240 VAC
  
• Interrupting Rating: 10 kAIC
  
• Trip Type: Common Trip
  
• Mounting Style: Bolt-On
  
• Electrical Connection Type: Bolt-On
  
• Depth: 4 in. | Width: 3 in. | Height: 3.972 in.
  
• Net Weight: 1.014 lb.
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL 489 Listed
• Manufactured to Siemens quality standards for low-voltage electrical distribution
  

Where It Works Best

• The BQ3B020 is commonly installed in commercial buildings, workshops, manufacturing facilities, schools, and other three-phase systems. Typical uses include motor control, HVAC equipment, pumps, compressors, and other dedicated 240V branch circuits.