Siemens | QJ23B175HL | Circuit Breaker | 175A | 3-Pole | 240V | Bolt-On

Meet the Siemens QJ23B175HL circuit breaker—a purpose-built, high-current 3-pole unit designed for demanding 240V, 3-phase applications. With a 175A rating, this bolt-on breaker delivers reliable protection for heavy-duty circuits, making it an ideal choice for maintenance, retrofit, and replacement projects where exact specs matter.

• 175 A amperage provides robust overcurrent protection for high-demand feeders, minimizing the risk of equipment damage and unexpected outages.
• 3-Pole design ensures true 3-phase protection and helps maintain power quality across motors, pumps, and conveyors by reducing phase imbalances.
• 240V operation aligns with common industrial and commercial electrical systems, offering compatible performance for standard 3-phase layouts.
• Bolt-On mounting delivers a secure mechanical connection and straightforward retrofitting or replacement in compatible Siemens panelboards.
• Precise compatibility reference centered on the part number QJ23B175HL—use this as the definitive check when verifying fit with your panel, bus configuration, and protection scheme.

Why this Siemens QJ series breaker stands out: it’s built for durability in busy environments, with a design that supports quick service and dependable operation in continuous-duty applications. The bolt-on configuration helps ensure a solid bus connection and repeatable protection characteristics, which is particularly valuable in retrofit scenarios where panel layouts are fixed but protection needs evolve.

Ideal use cases and practical guidance:

• Swap in the QJ23B175HL to preserve protection coordination in existing Siemens panels without reconfiguring bus bars or trip settings.
• Use for 240V feeders powering motors, fans, and industrial equipment where reliable interruption protection is critical.
• Keep on hand a spare with the exact amperage, pole count, and voltage to minimize downtime during scheduled service windows.

Important note: always confirm fit and ratings before purchasing. The QJ23B175HL part number is your best reference for compatibility, and ensure your panel supports bolt-on devices and the corresponding bus geometry for a secure, code-compliant installation.