Siemens | QJ3B200HA02 | Circuit Breaker | 200A | 3-Pole | 240V

Introducing the Siemens QJ3B200HA02 Circuit Breaker — a robust 200A, 3-pole, 240V protection device built for reliability in demanding electrical setups. Designed for maintenance, retrofit, and replacement projects, this breaker ensures your power system stays protected when you need it most, with exact specifications that match your existing equipment.

Why this Siemens breaker stands out

• Precise compatibility: The part number QJ3B200HA02 is your best reference for ensuring a correct fit in compatible Siemens panels and configurations. Always confirm the panel model and alignment with the QJ series before ordering.
• High-current, three-pole protection: With a 200A rating across 3 poles, it safeguards three hot conductors in 240V systems, making it well-suited for 3-phase feeders and large load centers.
• Designed for practical, real-world use: This unit is ideal for routine maintenance, panel retrofits, and replacement projects where exact specs are essential to maintain system protection and reliability.
• Durable, dependable operation: Built to withstand the rigors of commercial and industrial environments, helping minimize unplanned downtime and keep critical equipment online.
• Clear fit guidance: The product notes emphasize verifying fit and ratings prior to purchase, ensuring you don’t run into compatibility surprises during installation.

Ideal use cases

• Maintenance: Replace worn or aging breakers to restore full overcurrent protection and maintain panel integrity.
• Retrofit: Upgrade or modernize existing Siemens installations that require exact 3-pole, 240V protection with a 200A capacity.
• Replacement: Swap out a failed breaker in compatible QJ-series panels without compromising electrical standards.

How to verify compatibility (practical tips)

• Check your panel label and confirm it supports a 3-pole, 240V configuration with similar current ratings.
• Use the exact part number, QJ3B200HA02, as the primary compatibility reference when ordering.
• If in doubt, compare mounting style and bus connectors to existing breakers in the panel to ensure a seamless install.

With the Siemens QJ3B200HA02, you’re choosing a purpose-built solution for reliable circuit protection where it matters most. Whether you're maintaining an aging system, performing a targeted retrofit, or replacing a failed unit, this 200A, 3-pole, 240V breaker delivers the performance and compatibility that professionals rely on.