Siemens | QJ3B200A02 | Circuit Breaker | 200A | 3-Pole | 240V | Bolt-On

When your electrical system demands robust, reliable protection for a three‑phase 240V load, the Siemens QJ3B200A02 Circuit Breaker delivers. This 200A, 3‑pole, bolt‑on device is engineered for durable performance in maintenance, retrofit, and replacement projects where exact specifications matter—and the part number is your most reliable reference for compatibility.

• Amperage: 200A
• Poles: 3‑Pole
• Voltage: 240V
• Mounting: Bolt‑On
• Compatibility reminder: Part number QJ3B200A02 is the best reference for ensuring a proper fit and ratings.

Why this Siemens breaker stands out

The bolt‑on design provides a secure mechanical connection that simplifies installation in compatible panels, making service and future upgrades smoother. Built to handle demanding three‑phase mains, this breaker helps protect feeders and equipment against overloads with precise coordination to Siemens’ QJ series standards. It’s a smart choice when you’re upgrading an aging panel, retrofitting to support higher loads, or replacing a failed unit with a like‑for‑like specification.

Ideal use cases

• Maintenance and replacement in commercial or light industrial panels that require a solid 200A, 3‑pole protection solution.
• Retrofits where existing Siemens equipment calls for a bolt‑on 240V, 200A breaker to maintain electrical safety and code compliance.
• Panel upgrades that need consistent, compatible components to minimize downtime and sensor/feeder disruption.

How it fits into your project

If you’re upgrading distribution capacity or restoring panel functionality after a routine service, this QJ3B200A02 breaker ensures you’re selecting a device designed for the exact electrical characteristics of your system. Always confirm fit and ratings before ordering—the part number is the most reliable compatibility guide, and Siemens panels that support bolt‑on QJ breakers typically align with this specification.

Practical tips for a smooth install

• Match the panel model and bus configuration to confirm bolt‑on compatibility with 200A, 3‑pole devices.
• Keep a spare QJ3B200A02 on hand for rapid replacements in critical service applications.
• Document the upgrade with the part number and panel model for future maintenance and inspections.