Siemens | QN2175H | Circuit Breaker | 175A | 2-Pole | 240V | 22kA

Siemens QN2175H Circuit Breaker combines precision protection with rugged reliability for 240V electrical systems. This 2-pole unit delivers 175A of continuous current and a robust 22kA interrupting capacity, making it a trusted choice for safeguarding feeders and branch circuits in commercial and light industrial environments.

Designed for maintenance, retrofit, and replacement projects where exact specifications matter, the QN2175H is the dependable fit when your panel and protection requirements align with Siemens’ QN series. Its exact part number is the best reference for compatibility, ensuring you get the right device for your existing equipment and configuration.

Key specifications at a glance

• Amperage: 175A
• Poles: 2-Pole
• Voltage: 240V
• Interrupting capacity: 22kA
• Part number: QN2175H

Why this Siemens breaker stands out

Unlike generic substitutes, this unit is engineered to work seamlessly with Siemens panelboards and related hardware. The 2-pole configuration ensures simultaneous protection of both hot legs in 240V circuits, while the 22kA rating provides fast fault clearing under high-short-circuit conditions. This combination minimizes equipment damage and downtime, preserving critical electrical infrastructure.

Who should consider the QN2175H

• Facilities upgrading or maintaining Siemens panel systems that require 175A, 2-pole protection
• Maintenance teams performing routine service on 240V distribution networks
• Retrofit projects where exact specifications must match existing protection schemes

Important compatibility notes

Before ordering, confirm fit and ratings to ensure seamless integration with your panel. The part number is the most reliable reference for compatibility, helping you avoid mismatches and delays.

Installation and safety tips

• Follow manufacturer torque specifications and wiring diagrams during installation
• De-energize equipment and observe lockout/tagout procedures
• Consider keeping a spare QN2175H on hand for planned maintenance or quick replacement

Practical use cases

Ideal for 240V distribution feeders in commercial spaces, data centers, and light industrial setups where high-current protection and swift fault clearing are essential. Use during panel upgrades, legacy panel replacements, or any scenario requiring a precise 175A, 2-pole protection solution with a 22kA interrupting capacity.