Siemens QS2100 100A 2P Circuit Breaker | AmpState

The Siemens QS2100 100A 2P Circuit Breaker is a dependable protection device for panelboards, load centers, and electrical distribution systems. Designed as an exact-fit replacement, it helps you keep your BOM aligned with the original Siemens part number, simplifying procurement and maintenance planning.

With the QS2100 part number, this 2-pole breaker delivers reliable interrupting capacity for a 100 A circuit, making it ideal for retrofit projects, spare stock for critical facilities, and new builds that require consistent Siemens-compatible protection.

Key specifications

• Part Number: QS2100
• Amperage: 100 A
• Poles: 2-Pole
• Type: Circuit Breaker
• Applications: Panelboards, load centers, and electrical distribution systems
• Availability: Available from AmpState

Practical uses and benefits

• Replacement projects: Restore protection in legacy Siemens installations without reengineering panels
• Spare stock: Maintain BOM alignment to the original part number for fast swaps
• Downtime reduction: Quick, reliable swaps keep critical facilities online during maintenance
• Scalable protection: Suitable for both upgrades and new distribution circuits requiring dependable 2-pole protection

Why choose this for your Siemens ecosystem

Unlike generic breakers, the QS2100 is engineered to meet Siemens’ exacting specifications for fit, trip behavior, and compatibility with panelboard layouts. This ensures predictable performance within your existing electrical distribution system and minimizes compatibility surprises during installation.

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.