Siemens | QJ3B09000S01 | Circuit Breaker | 90A | 3-Pole | 240V | Bolt-On

Introducing the Siemens QJ3B09000S01 Circuit Breaker — a rugged, bolt-on protection solution designed for 240V, 3-pole systems. With a 90A rating across three poles, this breaker provides reliable shutdown protection for demanding panels in commercial and industrial settings. The bolt-on mounting delivers a secure, vibration-resistant connection that stands up to the rigors of real-world electrical environments.

Key specifications at a glance

• Amperage: 90A
• Poles: 3-Pole
• Voltage: 240V
• Mounting: Bolt-On
• Part number: QJ3B09000S01

Why this Siemens QJ3B09000S01 is a smart choice

• Designed for maintenance, retrofit, and replacement projects where matching specs are essential, ensuring you don’t over- or under-spec the protection for your panel.
• The bolt-on design provides a robust mechanical connection, minimizing the risk of loose contacts and enhancing reliability in challenging environments.
• Direct reference compatibility is centered on the part number — QJ3B09000S01 — making it the most precise guide for fit in Siemens panels that support the QJ3 bolt-on line.

Compatibility and installation notes

Before ordering, confirm fit and ratings against your panel’s requirements. The part number is the best reference for compatibility, and the bolt-on configuration is intended for Siemens panels designed to accept this style of breaker. If you’re upgrading from a different setup, plan for a straightforward, secure removal of the old unit and a clean bolt-on mounting of the QJ3B09000S01 to restore protected operation quickly.

Practical use cases

• Routine maintenance on 3-phase 240V distribution systems where 90A circuits require reliable interruption.
• Retrofits of older installations needing to replace worn or obsolete breakers with a modern Siemens bolt-on option.
• Emergency replacements in service cabinets where downtime must be minimized and precise amperage matching is critical.

When you need a dependable, correctly rated bolt-on circuit breaker for 240V, 3-pole applications, the Siemens QJ3B09000S01 delivers predictable protection and fast, secure installation. Add it to your panel and restore circuit integrity with confidence.