Siemens | QJ23B09000S01 | Circuit Breaker | 90A | 3-Pole | 240V | Bolt-On

Siemens QJ23B09000S01 is a 90 Amp, 3-pole, 240 Volt bolt-on circuit breaker designed for dependable protection in industrial and commercial panels. When replacement, retrofit, or maintenance is on the agenda, this part offers a precise match to the original specifications, with the part number serving as your best compatibility reference.

Key specifications

• Amperage: 90 A
• Poles: 3-Pole
• Voltage: 240 V
• Mounting: Bolt-On

What makes this breaker unique

• Bolt-on mounting provides a secure, vibration-resistant connection in compatible Siemens panels, making field installations straightforward and reliable.
• Part number QJ23B09000S01 serves as the clearest reference for compatibility, helping you verify exact fit during replacements or retrofits.
• Designed with maintenance, retrofit, and replacement projects in mind — a practical choice when you’re upgrading or restoring critical panel protection.

Ideal use cases

• Replacing a worn or failed 3-pole breaker in 240 V three-phase distribution systems.
• Retrofit projects in industrial control panels, machine tool enclosures, or HVAC equipment where Siemens compatibility is essential.
• Maintenance inventories for facilities with Siemens panel ecosystems, ensuring quick, accurate part swaps to minimize downtime.

Why choose this Siemens breaker for your project

Choosing the Siemens QJ23B09000S01 means aligning with a trusted, engineering-backed solution purpose-built for reliability in demanding environments. The 90 A capacity supports robust protection for three-phase circuits, while the bolt-on design improves installation stability and serviceability. This part helps you maintain consistent electrical protection without guesswork—exactly what’s needed for predictable performance and safer electrical systems.

Installation and compatibility tips

• Always confirm fit and ratings before ordering—the part number is the best reference for compatibility with your panel.
• Ensure you’re mounting in a compatible Siemens enclosure designed for bolt-on breakers, and use the appropriate mounting hardware as specified by your panel’s documentation.
• Keep a labeled spare on hand for planned maintenance or urgent replacements to reduce panel downtime.