BQD340 - 40Amp Circuit Breaker

BQD340 - 40Amp Circuit Breaker

The Siemens BQD340 is a 40-amp, 3-pole circuit breaker used in 480/277VAC three-phase electrical systems. It's commonly installed in commercial and industrial panelboards to protect circuits from overloads and short circuits. You'll often find breakers like this tripped by overloads and short circuits. You'll often find breakers like this protecting lighting panels, HVAC equipment, pumps, and other building systems that run day in and day out.

The breaker uses a thermal-magnetic trip unit, a design familiar throughout the industry because it protects against both sustained overloads and sudden fault conditions. As part of the Siemens BQD series, the BQD340 is designed for panelboard mounting and features low-tab connections. Whether you're replacing an existing breaker or maintaining a facility's electrical distribution system, this breaker is designed for panelboard mounting and features low-tab connections.

Whether you're replacing an existing breaker or maintaining a facility's electrical distribution system, it's a straightforward option that fits many common commercial applications. Its molded-case construction and 14 kAIC interrupting rating make it suitable for a wide range of everyday power distribution needs, including many common commercial applications. Its molded-case construction and 14 kAIC interrupting rating make it suitable for a wide range of everyday power distribution applications.

Key Features and Benefits

• 40 Amp current rating
• 3-pole configuration
• Rated for 480/277VAC systems
• Thermal magnetic trip protection
• 14 kAIC interrupting capacity
• Panelboard-mount design
• Low-tab connection style style
• Molded case construction
• Designed for commercial and industrial applications

Technical Specifications

• Manufacturer: Siemens
• Catalog Number: BQD340
• Series: BQD
• Current Rating: 40 Amps
• Poles: 3
• Voltage Rating: 480/277VAC
• Interrupting Capacity: 14 kAIC
• Frequency: 50/60 Hz
• Trip Unit: Thermal Magnetic
• Mounting Type: Panelboard Mount
• Connection Type: Low Tab
• Frame Size: 100A
• Construction: Molded Case Circuit Breaker
• Dimensions: 3" W × 3" H × 4" D
• Maximum Ambient Temperature: 40°C
• Weight: 1.349 lb
• Country of Origin: Mexico

Material Compliance and Certifications

• UL 489 Listed
• CSA C22.2 Certified
• RoHS Compliant
• REACH Information Available
• WEEE Compliant

Where It Works Best

• The Siemens BQD340 is commonly used in commercial buildings, schools, healthcare facilities, warehouses, retail centers, and industrial properties. Typical applications include lighting circuits, HVAC systems, buildings, schools, healthcare facilities, warehouses, retail centers, and industrial properties. Typical applications include lighting circuits, HVAC systems, motor loads, pumps, and general power distribution equipment operating on 480/277 VAC electrical systems.