Siemens | QJ23B20001S01 | Circuit Breaker | 200A | 3-Pole | 240V

Introducing the Siemens QJ23B20001S01 circuit breaker—a precise, trusted solution for protecting your 240V, three‑phase electrical system. Built for reliability in maintenance, retrofit, and replacement projects, this unit is designed to plug into panels that require exact Siemens specifications and the proven performance of the QJ family.

Key specifications

• Amperage: 200 A
• Poles: 3-Pole
• Voltage: 240 V
• Part number: QJ23B20001S01

Why this model matters

Not all breakers are interchangeable. The QJ23B20001S01 is a purpose-built Siemens component that aligns with the exact trip characteristics and electrical footprint required by compatible panels. Using the dedicated part number ensures you’re selecting a device that matches your system’s protection needs, reducing the risk of misfit, nuisance trips, or compatibility issues during service or upgrades.

Important compatibility note

Before ordering, confirm fit and ratings for your specific panel. The part number is the best reference for compatibility, helping you identify the correct form factor and electrical performance for your Siemens installation.

Common use cases

• Maintenance and service of existing Siemens panels that require 200 A, 3‑pole protection
• Retrofit projects where upgrading protection or replacing aged components is needed
• Spare-part stock to minimize downtime during electrical servicing

What sets it apart

This breaker is not a generic substitute. It’s a Siemens-specific device crafted to meet the QJ series standards, offering dependable overcurrent protection for 240V systems. Rely on the exact part number (QJ23B20001S01) to guarantee compatibility and performance, so your electrical protection remains consistent across your installation.