Siemens HQR22B125H 125A 240V 2-Pole Bolt-On Circuit Breaker

Meet the Siemens HQR22B125H — a purpose-built 125 A, 240 V, 2-pole bolt-on molded case circuit breaker engineered for dependable protection in panelboards and load centers. Built to endure the demands of residential, commercial, and light industrial environments, this unit delivers precise, reliable performance when it matters most.

• Bolt-on mounting provides a rigid, vibration-resistant bus connection, helping maintain consistent electrical contact even in panels subject to movement or vibration.
• Thermal-magnetic trip unit delivers stable, repeatable protection across varying loads and temperatures, reducing nuisance trips while reliably interrupting fault conditions.
• 125 A, 240 V, 2-Pole design offers robust branch-circuit overcurrent and short-circuit protection suitable for a wide range of panelboard configurations.
• OEM-compatible designed to be compatible with matching Siemens OEM load centers and panelboards, ensuring seamless integration with existing infrastructure.
• Versatile application ideal for residential, commercial, and light industrial installations, including service panels, distribution boards, and subpanels requiring solid, dependable protection.

Why this matters

The HQR22B125H isn’t just a breaker — it’s a safeguard for your electrical system. With its bolt-on reliability, you get a secure connection that resists loosening over time, while the thermal-magnetic trip mechanism responds predictably to overloads and short circuits. That combination translates to fewer unexpected outages, easier maintenance, and a safer, more resilient electrical installation.

Technical snapshot

• Manufacturer: Siemens
• Part Number: HQR22B125H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125 A
• Voltage Rating: 240 V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

For professionals building or upgrading panel systems, the Siemens HQR22B125H delivers precise protection with a robust, long-lasting connection. It’s a deliberate choice for reliable power distribution in spaces where consistent performance and safety are non-negotiable.