CQD315 - 15Amp Circuit Breaker

CQD315 - 15Amp Circuit Breaker

If you’re working inside a Siemens CQD panel, the CQD315 is one of those breakers that keeps things simple. It’s a 3-pole, 15 amp circuit breaker designed for 480/277V systems, and it’s typically used in setups where you’re maintaining an existing panel rather than redesigning anything. In other words, it’s built for the practical side of electrical work—swapping out a like-for-like component so the system keeps running the way it should.

You’ll usually see this breaker in commercial lighting circuits, small three-phase loads, and control panel applications. At 15 amps, it handles lighter branch circuits, while the 14kA interrupt rating provides standard protection for this class of equipment. It’s a straightforward fit when consistency with existing Siemens CQD systems matters more than anything else.

Because it mounts on DIN rail, installation stays quick and tidy. It locks into place cleanly, helping keep panel layouts organized and making future maintenance easier when the time comes.

Key Features and Benefits

• Siemens CQD series breaker for existing panel systems
• 15 amp, 3-pole design for 480/277V applications
• 14kA interrupt rating for standard commercial protection
• DIN rail mounting for quick, clean installation
• Commonly used in lighting and low-load three-phase circuits
• Ideal for like-for-like replacement in CQD panels
• Helps maintain consistency in installed electrical systems
• Compact design supports organized panel layouts
• Makes routine maintenance and swaps more straightforward

Technical Specifications

• Model: CQD315
• Series: Siemens CQD
• Amperage: 15A
• Poles: 3
• Voltage Rating: 480/277V AC
• Interrupt Rating: 14kAIC
• Mounting Type: DIN rail
• Application: Three-phase branch circuit protection

Material Compliance and Certifications

Built in accordance with applicable UL and IEC standards for molded case circuit breakers used in commercial electrical distribution systems. Installation should be performed by qualified personnel following all local electrical codes and safety guidelines.

Where It Works Best

• Existing Siemens CQD panelboard systems
• Commercial lighting and small-load distribution circuits
• 480V three-phase branch circuits
• 277V lighting control applications
• Electrical maintenance and replacement work
• Industrial and commercial control panels
• DIN rail panel layouts where organization matters
• Like-for-like CQD series breaker replacement jobs