Siemens | JD3B250 | Circuit Breaker | 250A | 3-Pole | 240V | Bolt-On

Meet the Siemens JD3B250 circuit breaker—a robust, high-current solution designed for 240V systems. With a 250A rating and a three-pole configuration, this bolt-on unit delivers solid overcurrent protection for demanding industrial and commercial panels. Built for maintenance, retrofit, and replacement scenarios, it’s a reliable choice when exact specifications matter.

• 250A, 3-Pole, 240V configuration—orchestrates safe power distribution across three phases with clear, decisive protection.
• Bolt-On mounting—secure, durable installation that simplifies panel retrofits and reduces vibration-related concerns in active environments.
• Part number JD3B250—the precise reference to use when matching existing equipment and ensuring compatibility.
• Maintenance, retrofit, or replacement—designed to slot into panels that require consistent, reliable protection without compromising layout or performance.

Compatibility and ordering note: Confirm fit and ratings before ordering. The JD3B250 part number is the best reference for compatibility with Siemens panels and related equipment.

Ideal for

Mechanical rooms, data centers, manufacturing floors, and any facility-wide electrical distribution where three-phase 240V power requires dependable interruption protection at 250A. If you’re upgrading an older panel, performing a retrofit, or replacing a worn breaker, the JD3B250 is purpose-built to meet those needs with precision.

How it solves common problems

• Prevents nuisance trips and protects equipment from overcurrent events in high-load applications.
• Offers a straightforward bolt-on install to minimize downtime during maintenance windows.
• Ensures exact compatibility through the JD3B250 designation, reducing guesswork in replacement projects.

Specifications at a glance

• 250A
• Poles: 3-Pole
• Voltage: 240V
• Mounting: Bolt-On
• Part Number: JD3B250
• Application: Circuit protection for 3-phase 240V systems

Practical installation tips

• Verify that your panel is designed to accept bolt-on circuit breakers and supports a 250A rating in a 3-pole, 240V configuration.
• Prepare the mounting area by clearing debris and ensuring a clean, dry connection point to maintain performance and safety.
• Follow all local electrical codes and safety practices during retrofit or replacement work.