Siemens | HQR22B125H | Circuit Breaker | 125A | 2-Pole | 240V | 100kA | Bolt-On

Introducing the Siemens HQR22B125H circuit breaker—a purpose-built solution for robust electrical protection in 240V systems. This 125-amp, 2-pole device delivers dependable overcurrent protection with a high 100kA interrupting rating, making it a reliable choice for maintenance, retrofit, and replacement projects where precise, compatible specs matter. With a bolt-on termination, it provides a secure, durable connection that electricians trust for long-term performance.

• Amperage: 125 A
• Poles: 2-Pole
• Voltage: 240 V
• Interrupting rating: 100 kA
• Termination: Bolt-On
• Part number: HQR22B125H

This Siemens circuit breaker is specifically suited for maintenance, retrofit, and replacement scenarios where matching specifications are essential. Its bolt-on design ensures a solid mechanical mount and reliable electrical contact, while the 2-pole configuration protects both conductors in shared circuits—an important consideration for balanced protection in 240V applications.

Why choose the HQR22B125H?

• High interrupting capacity (100kA) means quick clearance of fault currents, helping safeguard wiring and connected equipment.
• Precisely matched to Siemens HQR-series hardware and compatible installations, reducing guesswork during replacement or upgrades.
• Clear, definitive part reference—the HQR22B125H part number is the best guide for compatibility when ordering or cross-referencing.
• Bolt-on termination provides a rigid, vibration-resistant connection ideal for panels subject to movement or harsher environments.

Ideal for electrical professionals tackling panel maintenance, system retrofits, or component replacements where 125A, 2-pole protection at 240V is required. Use cases include service panels, distribution boards, and load centers where upgrade cycles or fault-driven replacements demand a reliable Siemens solution with a proven track record.

Practical tips for installation and compatibility

• Before ordering, confirm fit and ratings against your panel or enclosure specifications; use the exact part number HQR22B125H as the reference to avoid mismatches.
• Inspect mounting hardware and panel labeling to ensure bolt-on breakers are supported by your current equipment.
• Schedule replacement during planned maintenance windows to minimize downtime and ensure proper testing of the protection circuit after installation.