CQD2100 - 100Amp Circuit Breaker

CQD2100 - 100Amp Circuit Breaker

The CQD2100 Siemens CQD miniature circuit breaker is a 100 Amp, 2-pole breaker used in commercial and industrial electrical systems where 277/480V circuits need steady, predictable protection. You’ll typically see this breaker in lighting panels, power distribution boards, and control cabinets, especially in facilities that use DIN rail layouts to keep everything organized and service-friendly.

It’s rated for 480/277 VAC applications with a 14 kA interrupting capacity, making it suitable for standard branch-circuit protection in commercial environments. The 2-pole design disconnects both conductors simultaneously, which is commonly required for 277/480V systems used in lighting and distribution applications.

At its core, it’s a straightforward breaker that fits into existing Siemens setups and does its job without complication—protecting circuits in systems where consistency, space efficiency, and easy replacement are what matter most.

Key Features and Benefits

• 100 Amp, 2-pole breaker for 480/277V circuits
• Designed for Siemens CQD DIN rail systems
• 14kA interrupting rating for branch circuit protection
• Compact DIN rail-mounted design for easy installation
• Common in lighting and distribution panels
• Used in commercial and industrial electrical systems
• Supports organized multi-breaker layouts
• 2-pole disconnect for 277/480V applications
• Ideal for maintenance, retrofit, and new builds
• Simple, consistent circuit protection component

Technical Specifications

• Catalog Number: CQD2100
• Product Type: Miniature Circuit Breaker
• Series: CQD
• Amperage Rating: 100A
• Poles: 2
• Voltage Rating: 480/277VAC
• Interrupting Rating: 14kA
• Mounting Type: DIN Rail
• Application: Branch circuit protection
• Net Weight: approx. 1.499 lb

Material Compliance and Certifications

The CQD2100 Siemens breaker is built in accordance with applicable UL and IEC standards for low-voltage circuit protection equipment. It is intended for installation in compatible DIN rail systems and should be installed by qualified electrical personnel in accordance with all applicable electrical codes and manufacturer guidelines.

Where It Works Best

• Commercial lighting panels
• Industrial control cabinets
• 277/480V distribution systems
• DIN rail panelboard assemblies
• Electrical maintenance and retrofit work
• Building power distribution systems
• Siemens-compatible installations
• Multi-circuit electrical enclosures