Siemens BQ3B09000S01 90A 3P 240V Circuit Breaker, Shunt Trip | AmpState

Meet the Siemens BQ3B09000S01—a 90 A, 3-pole, 240 V circuit breaker with an integrated shunt trip. Designed for panelboards, load centers, and distributed electrical systems, it delivers targeted protection where it matters most. AmpState keeps this direct part-number match in stock for quick, reliable replacements, making maintenance planning simpler and faster.

What makes this breaker stand out

• Shunt Trip for remote safety: The integrated shunt-trip capability enables immediate, remote disconnection in response to external control signals or safety interlocks, supporting safer emergency shutdowns and coordinated protection across your system.
• Precise 90 A, 3-Pole, 240 V protection: Ideal for three-phase feeders and loads common in commercial and light industrial environments, delivering coordinated protection across all phases with a single unit.
• Direct part-number match for reliability: A smart choice for panel builders and maintenance teams who need exact Siemens part numbers to ensure compatibility, reducing the risk of ordering the wrong component and minimizing downtime.
• Inventory you can trust: Available from AmpState, making it easier to stock spare breakers for critical panels and faster replacement when a fault occurs.

Ideal use cases

• Replacing failed or outdated breakers in three-phase distribution systems that operate at 240 V.
• Emergency shutdown integration where remote trip capability is required—linking with building management, safety interlocks, or automation systems for rapid disconnection.
• Spare inventory for panel builders and service teams that must maintain exact Siemens components to preserve system integrity and warranty compatibility.

Key specifications at a glance

• Manufacturer: Siemens
• Part number: BQ3B09000S01
• Product type: Circuit Breaker
• Amperage: 90 A
• Poles: 3
• Voltage: 240 V
• Special feature: Shunt Trip

Practical installation tips

• Verify that your panelboard or load center is compatible with the BQ3B90xx series and supports shunt-trip operation for remote disconnection.
• Ensure correct torque on mounting and wiring terminals according to Siemens installation guidelines to maintain reliable trip performance.
• Plan for remote-trip signaling in your safety architecture—confirm that control circuits provide a clean, compliant signal to trigger the shunt trip when needed.
• Keep a dedicated spare in your maintenance stock to minimize downtime during a fault or upgrade project.

Why choose AmpState for this Siemens breaker

AmpState specializes in providing exact-pit parts with reliable availability. With the Siemens BQ3B09000S01, you’re getting a proven solution for critical distribution points, backed by fast access to spare inventory and guided compatibility assistance to confirm fit and performance.

If you’re confirming fit or matching a part number for a specific panel configuration,AmpState offers quick support to validate compatibility and ensure a seamless replacement process for your Siemens protection strategy.