Siemens BQ3B090 - 90 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Siemens BQ3B090 — a 90A, 240V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built to endure in demanding electrical environments, this breaker combines robust construction with precise protection, ensuring your essential circuits stay safe and uninterrupted.

• Secure bolt-on mounting: Provides a rigid, vibration-resistant bus connection that stays tight, reducing connections loosening over time.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection performance across varying temperatures and electrical loads, helping minimize nuisance trips.
• OEM-compatible: Designed to pair with matching Siemens load centers and panelboards for seamless integration and reliable overall protection.
• Three-pole 90A design: Efficiently protects three-phase circuits in a single device, simplifying panel layouts for commercial and light industrial applications.
• Versatile applications: Suitable for residential, commercial, and light industrial installations that require dependable 90A branch-circuit protection.

Key specifications

• Manufacturer: Siemens
• Part Number: BQ3B090
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 90A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal for upgrading existing panelboards or configuring new installations where Siemens compatibility is essential. The BQ3B090’s bolt-on design ensures a solid bus connection and straightforward installation, while the thermal-magnetic trip unit provides dependable protection that adapts to real-world load conditions. Whether you’re stocking spare components for maintenance, outfitting a commercial space, or wiring a light industrial system, this 3-pole breaker delivers targeted, reliable protection for your critical circuits.