BQD6120 - 20Amp Circuit Breaker

BQD6120 - 20Amp Circuit Breaker

The Siemens BQD6120 is a 20 Amp, single-pole circuit breaker built for 347VAC panelboard systems commonly found in commercial, institutional, and industrial buildings. If you're working with lighting circuits, control panels, or other branch circuits operating at 347 volts, this breaker provides the protection needed to help keep those systems running safely.

Inside, the breaker uses a thermal magnetic trip unit, a design that's widely used throughout the electrical industry because it responds to both prolonged overloads and sudden fault conditions. When current stays above normal levels for too long, the thermal element reacts. If a short circuit occurs, the magnetic trip responds quickly to disconnect power and help protect connected equipment.

Key Features and Benefits

• 20 Amp continuous current rating
• Single-pole circuit breaker design
• Rated for 347VAC applications
• Thermal magnetic trip unit for overload and short-circuit protection
• 10 kAIC interrupting capacity
• Siemens BQD6 series molded case circuit breaker
• Panelboard mount construction
• Low-tab electrical connection design
• Compact molded case configuration
• 100 Amp frame size
• Suitable for 50/60 Hz electrical systems
• UL 489 listed for circuit protection applications
• Commonly used in commercial, institutional, and industrial facilities
• Commonly used for lighting circuits, control panels, and general branch-circuit applications

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: BQD6120
  
• Series: BQD6
  
• Current Rating: 20 Amps
  
• Number of Poles: 1
  
• Voltage Rating: 347VAC
  
• Interrupting Capacity: 10 kAIC
  
• Frequency Rating: 50/60 Hz
  
• Trip Unit Type: Thermal Magnetic
  
• Frame Size: 100A
  
• Mounting Type: Panelboard Mount
  
• Connection Type: Low Tab
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Enclosure Material: Molded Case
  
• Dimensions:
  • 4 in. D × 3 in. W × 1 in. H
• Maximum Ambient Operating Temperature: 40°C
  
• Net Weight: 1.695 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL 489 Listed
• CSA C22.2 Certified
• RoHS Compliant (since July 1, 2006)
• REACH Information Available
• WEEE Take-Back Obligations Applicable

Where It Works Best

• The Siemens BQD6120 is well suited for facilities that utilize 347V electrical systems, including office buildings, schools, healthcare facilities, manufacturing plants, warehouses, retail centers, and government buildings. It is commonly installed to protect lighting circuits, branch circuits, control equipment, and other electrical loads that require a 20 Amp single-pole breaker.
• The BQD6120 is frequently installed during panel upgrades, breaker replacements, maintenance work, and new construction projects where a 20 Amp, single-pole breaker is specified for a 347V electrical system.