Siemens QR22B125 - 125 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens QR22B125 — a 125A, 240V, 2-pole bolt-on molded case circuit breaker engineered to deliver reliable overcurrent and short-circuit protection where it matters most. Designed for seamless integration in panelboards and load centers, this breaker keeps your electrical system safe while supporting smooth, long-term operation in a variety of settings.

• Secure bolt-on mounting — a rigid, vibration-resistant bus connection that minimizes loosening risks in demanding installations and reduces maintenance concerns over time.
• Thermal-magnetic trip unit — provides stable, repeatable protection against both overloads and short circuits, helping prevent nuisance trips while safeguarding downstream circuitry.
• 125A, 240V, 2-pole configuration — sized to protect larger branch circuits and coordinate effectively with compatible panelboards and load centers.
• OEM-compatible design — matches Siemens OEM load centers and panelboards for a clean, reliable fit with existing equipment and field upgrades.
• Versatile application — ideal for residential, commercial, and light industrial environments where dependable branch circuit protection is essential.

Technical highlights at a glance: Siemens QR22B125, molded case circuit breaker, 125A rating, 240V, 2-pole, Bolt-on mounting, purpose-built for branch circuit overcurrent and short-circuit protection.

Who benefits most: electricians, facilities managers, and contractors looking for a robust, space-efficient solution that installs quickly in compatible Siemens panelboards. If you’re upgrading or replacing a breaker in a panelboard or load center, the QR22B125 delivers predictable performance, minimizes downtime, and aligns with existing Siemens equipment for straightforward maintenance and service continuity.

Practical use scenarios: - Installing or upgrading large-diameter branch circuits in residential subpanels or commercial load centers. - Replacing aging breakers in Siemens panelboards where bolt-on mounting and a thermally magnetic protection profile are recommended. - Projects requiring a reliable, vibration-resistant connection in environments with equipment movement or vibrations.