CQD280 - 80Amp Circuit Breaker

CQD280 - 80Amp Circuit Breaker

The Siemens CQD280 is a 2-pole, 80 amp molded case circuit breaker built for 480/277V systems, commonly found in commercial lighting and distribution panels. It’s part of the Siemens CQD series, so it’s typically used where you’re working within an existing Siemens setup and need a breaker that matches the original panel design without any rework or changes.

In real-world use, this breaker shows up a lot in lighting circuits, branch distribution, and facility power panels. The 80A rating fits mid-range load requirements, while the 14kA interrupt rating provides standard protection for commercial electrical systems at this voltage level. It’s mainly chosen for its straightforward fit—electricians use it when they want to swap or maintain equipment without dealing with compatibility issues.

Because it’s DIN rail mounted, installation is quick and keeps the panel layout clean and organized. Once in place, it blends into the existing CQD system and helps keep maintenance work simple and predictable.

Key Features and Benefits

• Siemens CQD series breaker for compatible panel systems
• 80 amp, 2-pole design for 480/277V applications
• 14kA interrupt rating for standard circuit protection needs
• DIN rail mounting for quick, clean installation
• Commonly used in lighting and branch circuit distribution
• Works well for replacement in existing Siemens CQD panels
• Helps maintain consistency in installed electrical systems
• Compact design for space-conscious panel layouts
• Straightforward swap-in option for maintenance work

Technical Specifications

• Model: CQD280
• Series: Siemens CQD
• Amperage: 80A
• Poles: 2
• Voltage Rating: 480/277V AC
• Interrupt Rating: 14kAIC
• Mounting Type: DIN rail
• Application: Branch circuit protection

Material Compliance and Certifications

Manufactured to meet applicable UL and IEC requirements for molded case circuit breakers used in commercial electrical distribution systems. Installation should be completed by qualified personnel in accordance with local electrical codes and safety standards.

Where It Works Best

• Siemens CQD panel systems already in service
• Commercial lighting circuits (277V applications)
• 480V branch distribution panels
• Facility maintenance and breaker replacement work
• Commercial buildings and institutional facilities
• DIN rail panel layouts where space and organization matter
• Electrical systems requiring like-for-like CQD compatibility