Siemens | QJH23B09000S01 | Circuit Breaker | 90A | 3-Pole | 240V | Bolt-On

Siemens QJH23B09000S01 is a 90A, 3-Pole, 240V bolt-on circuit breaker designed for reliable protection in electrical panels. It’s built for maintenance, retrofit, and replacement projects where exact specifications matter, ensuring seamless compatibility with Siemens panel systems and their mounting footprint.

Key specifications

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

Why this 90A 3-Pole bolt-on breaker stands out

Unlike generic substitutes, this Siemens breaker's 3-Pole design provides synchronized protection across three conductors, making it ideal for three-phase loads and large motor circuits. The bolt-on mounting delivers a secure, robust connection that stays firmly seated through vibrations and routine panel maintenance, helping to minimize nuisance trips and intermittent faults often seen with clip-on alternatives.

Ideal use cases

• Retrofit or upgrade projects in Siemens-compatible panels where a 90A, 3‑pole, 240V solution is required
• Protection for three-phase motor feeders, conveyors, pumps, and other high‑load equipment
• Replacement for worn or failed breakers that match the QJH23B09000S01 specifications

Compatibility and installation notes

Notes: Confirm fit and ratings before ordering. The part number QJH23B09000S01 is the best reference for compatibility, ensuring the same mounting, trip characteristics, and electrical footprint as your existing equipment.

Practical guidance for a smooth setup

Before installation, verify that your panel is rated for 240V three‑phase service and that the intended load aligns with a 90A protection scheme. Use the bolt-on mounting to achieve a solid, vibration‑resistant fit, and follow your panel manufacturer’s torque specs and safety guidelines to complete the installation safely and efficiently.