Siemens QJ22B175H - 175 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens QJ22B175H, a reliable 2-pole bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and load centers. With a 175A rating at 240V, this unit is built to guard critical 240V circuits in residential, commercial, and light industrial settings while delivering consistent, repeatable protection performance.

Why the QJ22B175H stands out

• Secure bolt-on mounting: Provides a rigid, vibration-resistant bus connection that stays true even in busy electrical environments, helping maintain consistent protection over time.
• Thermal-magnetic trip unit: Delivers stable, predictable response to overloads and short circuits, reducing nuisance trips and safeguarding downstream equipment.
• 2-pole design for 240V circuits: Ensures both hot conductors are switched together, delivering complete protection for 240V feeders and connected loads.
• OEM compatibility: Specifically designed to work with matching Siemens OEM load centers and panelboards, simplifying upgrades or replacements without compromising performance.
• Ideal for a range of environments: Suitable for residential, commercial, and light industrial applications where reliable overcurrent and short-circuit protection is essential.

Who should consider this breaker?

• Electricians upgrading or maintaining panelboards in commercial spaces, schools, small offices, or retail environments that require robust protection for 240V circuits.
• Facilities engineers managing light industrial equipment feeds and HVAC systems that demand dependable, vibration-tolerant protection solutions.
• Homeowners or contractors handling high-load 240V circuit feeders where a sturdy bolt-on solution is preferred for long-term reliability.

Applications and use cases

Use the Siemens QJ22B175H to secure branch circuits that power essential equipment in panelboards and load centers. The bolt-on design minimizes movement and arcing risks in installations subject to vibration, while the thermal-magnetic trip unit provides dependable protection across varying temperatures and electrical conditions. Its compatibility with OEM Siemens panels makes it an ideal substitute during panel upgrades or service upgrades without reconfiguring the entire electrical system.

Technical specifications at a glance

• Manufacturer: Siemens
• Part number: QJ22B175H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 175A
• Voltage rating: 240V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Designed for professionals who demand consistent protection, straightforward installation, and compatibility with Siemens load centers, the QJ22B175H is a practical, high-value choice for safeguarding electrical systems of all scales. Trust in a breaker built to endure and perform when it matters most—backed by AmpState and ready to integrate into your next panel upgrade or service project.