Siemens QJ3B100 100A 3P 240V Circuit Breaker | AmpState

Meet the Siemens QJ3B100—a rugged, reliable three-pole circuit breaker engineered to provide precise protection in panelboards, load centers, and electrical distribution networks. With a 100-amp rating and 240V operation, this unit is built to handle demanding multi-load configurations with confidence.

Designed for procurement accuracy, this model is a direct part-number match for seamless replacements. AmpState offers the exact Siemens QJ3B100, streamlining maintenance inventories and speeding up restocks for panel builders and service teams. When every part counts, choosing the correct 100A, 3P, 240V breaker minimizes downtime and ensures consistent protection across your distribution system.

• Manufacturer: Siemens
• Part Number: QJ3B100
• Product Type: Circuit Breaker
• Amperage: 100 A
• Poles: 3
• Voltage: 240V

• Precise compatibility with Siemens panelboards and load centers, reducing fit risk during replacements and upgrade projects.
• Three-pole design delivers balanced protection for 3-phase 240V systems, helping to safeguard motors, conveyors, and other load centers.
• Ideal for maintenance inventories where having the exact part number (QJ3B100) on hand accelerates repairs and minimizes downtime.
• Durable construction optimized for reliable interrupting performance in commercial environments and long service life in steady operation.

Ideal use cases: upgrading or replacing breakers in existing Siemens panel systems, stocking spare inventory for panel builders, and provisioning protection for 3-phase, 240V distribution in commercial or light industrial settings. This breaker fits Siemens QJ-series installations where exact component matching is essential for code compliance and dependable protection.

AmpState makes it straightforward to source this exact part. If you’re unsure about fit, a quick check with AmpState can confirm compatibility with your Siemens panel model and voltage requirements, helping you avoid delays and misorders.