Siemens BQ2B09000S01 - 90 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens BQ2B09000S01 — a robust 90A, 240V, 2-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and loadcenters. Built for reliability, it combines sturdy mounting with precise protection to keep electrical systems safe and running smoothly.

• Secure bolt-on mounting: a rigid bus connection that resists vibration and maintains a solid electrical path, even in demanding environments.
• Thermal-magnetic trip unit: delivers stable, repeatable protection performance for both overload conditions and instantaneous short circuits, helping to prevent nuisance trips and equipment damage.
• 2-pole, 240V operation: ideal for protecting larger 240V circuits and multi-wire branch circuits in residential, commercial, and light industrial settings.
• OEM compatibility: designed to work with matching Siemens OEM load centers and panelboards, ensuring seamless integration and dependable long-term performance.

This device answers common questions like “Is there a high-current 240V breaker that fits my Siemens panel?” and “Can I rely on a single, dependable unit for both overload and short-circuit protection?” The BQ2B09000S01 is crafted for use in a range of applications—from home upgrade projects that expand 240V circuits to commercial environments where steady protection is essential for critical equipment and lighting systems. Its bolt-on design simplifies installation and provides a durable connection that stands up to vibration and daily use.

What you get with this Siemens MCCB

Designed for branch circuit overcurrent and short-circuit protection, this 90A, 240V, 2-pole breaker is a practical choice for electricians and facilities managers who demand reliability and straightforward maintenance. The thermal-magnetic mechanism ensures predictable response under fault conditions, helping equipment owners minimize downtime and protect wiring and devices downstream.

Technical specifications

• Manufacturer: Siemens
• Part number: BQ2B09000S01
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• Amperage rating: 90A
• Voltage rating: 240V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

For professionals seeking durable, plug-and-play protection that integrates seamlessly with Siemens load centers and panelboards, the BQ2B09000S01 delivers clear value: reliable protection, straightforward installation, and compatibility you can trust across residential, commercial, and light industrial projects.