Siemens BQ3B10000S01 - 100 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens BQ3B10000S01 is a purpose-built 100A, 240V, 3-pole bolt-on molded case circuit breaker designed to protect your electrical distribution with precision. Built for reliable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters, this unit delivers solid performance where it matters most.

Key features that matter in real-world installations

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection — designed to stay properly seated in environments where vibration or movement could affect connections, ensuring dependable protection over time.
• Thermal-magnetic trip unit for stable, repeatable protection performance — combines thermal and magnetic sensing to respond consistently to both overloads and short circuits, reducing nuisance trips and improving reliability.
• 3-pole, 100 A at 240 V — suitable for three-phase circuits and 240V distribution, providing coordinated disconnection across all poles when trip conditions are met.
• Compatibility with matching OEM load centers and panelboards — designed to integrate with Siemens-based panel systems for streamlined replacement and modernizations.
• Residential, commercial, and light industrial applications — versatile protection for a range of service equipment, from home panels to small business installations.

Why this breaker matters in your electrical system

Choosing the Siemens BQ3B10000S01 means prioritizing consistency and safety in critical distribution tasks. The bolt-on design provides a robust, vibration-resistant connection to the bus, which translates to fewer connection-related issues and steadier protection in environments with equipment activity or structural movement. The thermal-magnetic trip unit ensures that protection is both fast and predictable, so you’re less likely to experience both nuisance trips and delayed responses to dangerous faults. When you’re upgrading or expanding, this breaker aligns with Siemens load centers and panelboards, simplifying installation and ensuring compatibility with existing protection schemes.

Ideal use cases

• Replacing a failed or aging 3-pole breaker in Siemens panelboards or loadcenters that require bolt-on mounts.
• Upgrading service equipment in light commercial settings where stable 240V, three-phase protection is needed.
• Installing new branch circuits that demand reliable 100 A protection with a secure, vibration-resistant connection.
• Modernizing electrical distribution in residential complexes or small industrial spaces using Siemens panels that call for OEM-compatible components.

Technical specifications at a glance

• Manufacturer: Siemens
• Part number: BQ3B10000S01
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100 A
• Voltage rating: 240 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical installation tips

To maximize performance, ensure the panelboard or load center is designed for bolt-on molded case breakers and that mounting screws and bus connections are clean and free of corrosion prior to installation. Verify compatible OEM hardware for a seamless fit and follow standard electrical safety procedures during replacement or installation.

For reliable, long-lasting protection in 100 A, 240 V, 3-pole applications, the Siemens BQ3B10000S01 delivers precise trip behavior, durable mounting, and OEM compatibility that electricians trust for both upgrades and new installations.