CQD380 - 80Amp Circuit Breaker

CQD380 - 80Amp Circuit Breaker

If you’re maintaining an existing Siemens CQD panelboard system, the CQD380 is one of those components that simply helps everything stay consistent and working the way it should. It’s a 3-pole, 80 amp molded case circuit breaker designed for 480/277V applications, commonly used in commercial and industrial electrical distribution where reliability and compatibility with existing equipment matter most.

In real-world use, this breaker is typically found in three-phase power distribution, lighting panels, and general branch circuit applications. The 80A rating supports higher-load circuits within commercial systems, while the 14kA interrupt rating provides standard protection for fault conditions in this voltage range.

The DIN rail mounting design keeps installation straightforward and organized, allowing the breaker to snap cleanly into compatible panels while supporting tidy layouts that make future servicing easier.

Key Features and Benefits

• Siemens CQD series breaker designed for existing panelboard systems
• 80A, 3-pole configuration for 480/277V applications
• 14kA interrupt rating for standard commercial protection needs
• DIN rail mounting for fast, clean installation
• Commonly used in three-phase distribution and lighting circuits
• Ideal for like-for-like replacement in CQD systems
• Helps maintain consistency across installed electrical infrastructure
• Supports organized, service-friendly panel layouts
• Designed for maintenance and system continuity work
• Compact design for efficient use of panel space

Technical Specifications

• Model: CQD380
  
• Series: Siemens CQD
  
• Amperage: 80A
  
• Poles: 3
  
• Voltage Rating: 480/277V AC
  
• Interrupt Rating: 14kAIC
  
• Mounting Type: DIN rail
  
• Application: Commercial and industrial branch circuit protection
  

Material Compliance and Certifications

Manufactured in compliance with applicable UL and IEC standards for molded case circuit breakers used in commercial electrical systems. Installation should be performed by a qualified electrician in accordance with all local electrical codes and safety requirements.

Where It Works Best

• Existing Siemens CQD panelboard systems
• Commercial lighting and power distribution circuits
• 480V three-phase electrical systems
• 277V lighting control applications
• Maintenance and breaker replacement projects
• Industrial and commercial electrical panels
• DIN rail enclosure installations
• Facilities maintaining legacy Siemens infrastructure