Siemens QN2175RH - 175 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

Siemens QN2175RH is a 2-pole, 175A, 240V plug-in molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Built for quick installation and easy replacement, this breaker is a solid choice for heavy-duty circuits in residential, commercial, and light industrial settings.

Why this breaker stands out

When you need reliable protection for high-current feeders, the QN2175RH provides a robust, field-ready solution. The plug-in connection enables fast, tool-friendly installation and straightforward swaps during maintenance or panel upgrades. Its molded case construction offers durable isolation and consistent performance in demanding environments.

Key benefits

• Fast plug-in connection for quick installation and easy replacements, minimizing panel downtime.
• Thermal-magnetic trip unit delivers stable, repeatable protection by sensing both overloads and short circuits, helping prevent damage to connected equipment.
• OEM-compatible design ensures seamless compatibility with matching Siemens load centers and panelboards, simplifying upgrades and replacements.
• Ideal for branch circuit protection in residential panels, commercial distribution, and light industrial applications requiring high-current performance.

Technical snapshot

• Manufacturer: Siemens
• Part Number: QN2175RH
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 175 A
• Voltage Rating: 240 V
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Real-world use cases

• Upgrading a residential service panel to reliably feed high-draw circuits like electric water heaters, large HVAC units, or subpanels for workshops. • Replacing aging breakers in commercial load centers where quick swaps minimize downtime. • Installing in light industrial panels that require robust, high-current protection with dependable tripping behavior.

How it solves common problems

• Downtime reduction: The plug-in design simplifies replacement, reducing service interruption during maintenance or upgrades.
• Consistent protection: Thermal-magnetic actuation provides predictable trip performance across temperature changes and load conditions.
• Long-term compatibility with OEM load centers ensures a smoother upgrade path and fewer compatibility concerns.

Practical tips for use

• Verify the panel’s compatibility with Siemens OEM load centers to ensure a perfect fit and reliable operation.
• Use as a protective device for high-current branch circuits to safeguard wiring, devices, and downstream equipment.
• During panel maintenance, keep the plug-in connectors clean and free from debris to maintain a solid electrical connection.