BQD380 - 80Amp Circuit Breaker

BQD380 - 80Amp Circuit Breaker

The Siemens BQD380 is an 80 Amp, 3-pole molded case circuit breaker used in 480/277VAC three-phase panelboard systems. It's commonly found in commercial and industrial electrical distribution equipment where your branch circuits need protection from overloads and short circuits.

This breaker uses a thermal magnetic trip unit, combining long-time overload protection with fast response to fault conditions. The design is widely used throughout commercial facilities, manufacturing plants, schools, healthcare buildings, warehouses, and other properties that rely on three-phase power distribution.

The BQD380 features a panelboard-mount design with low-tab connections, making it suitable for replacement projects, panel upgrades, and new installations. Typical applications include lighting panels, HVAC equipment, pumps, motors, and general power distribution circuits.

For contractors and maintenance personnel looking for a Siemens 80 Amp 3-pole breaker, the BQD380 offers a straightforward solution that meets the requirements of many 480/277VAC electrical systems.

Key Features and Benefits

• 80 Amp continuous current rating
• 3-pole configuration for three-phase electrical systems
• Rated for 480/277VAC applications
• Thermal magnetic trip unit for overload and short-circuit protection
• 14 kAIC interrupting capacity
• Siemens BQD series design
• Panelboard-mount construction
• Low-tab electrical connection design
• Molded case construction
• Designed for 50/60 Hz electrical systems
• Commonly used in commercial, industrial, and construction applications
• Commonly used for lighting, HVAC, motor, pump, and power distribution circuits

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: BQD380
  
• Series: BQD
  
• Current Rating: 80 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 480/277VAC
  
• Interrupting Capacity: 14 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
  
• Dimensions:
  • 4 in. D × 3 in. W × 3 in. H
• Maximum Ambient Operating Temperature: 40°C
  
• Net Weight: 1.649 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 BQD380 is commonly used in commercial and industrial electrical distribution systems operating on 480/277VAC three-phase power. Typical applications include lighting panels, HVAC systems, motor circuits, pumps, compressors, and general power distribution equipment. It can be found in office buildings, schools, healthcare facilities, warehouses, manufacturing plants, retail locations, data centers, and construction projects where dependable branch-circuit protection is required.
• The BQD380 is often used during panel upgrades, breaker replacements, facility maintenance projects, and new electrical construction where an 80 Amp, 3-pole circuit breaker is required.