Siemens Q170 - 70 A, 120 V, 1-Pole Plug-In Circuit Breaker | AmpState

Siemens Q170 is a 70A, 120V, 1-pole plug-in molded case circuit breaker designed to shield your electrical system from overcurrent and short-circuit events. Specifically engineered for panelboards and load centers, this breaker pairs fast installation with reliable, repeatable protection for a broad range of settings.

• Fast plug-in connection enables tool-free, snap-in installation and straightforward replacement when a fault occurs, keeping panel downtime to a minimum.
• Thermal-magnetic trip unit combines a thermal element for gradual inrush handling with a magnetic trip for immediate response to short circuits, delivering stable protection across diverse loads.
• One-pole, 70A at 120V is ideal for single, higher-current branch circuits feeding heavy loads in residential or light commercial panels.
• OEM-compatible design works with matching Siemens OEM load centers and panelboards, ensuring a secure fit and predictable performance.
• Versatile applications suited for residential service panels, commercial equipment racks, and light industrial distribution where reliable isolation is critical.

Why this matters for your electrical setup

The Q170's plug-in format saves time during installation and maintenance, reducing labor costs and panel downtime. The thermal-magnetic trip mechanism provides crisp, accurate tripping behavior, so you’re protected during a fault without unnecessary interruptions during normal operation. When you pair this breaker with compatible Siemens panelboards, you’re investing in long-term reliability and consistent electrical performance across the system.

Specifications at a glance

• Manufacturer: Siemens
• Part Number: Q170
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 70 A
• Voltage Rating: 120 V
• Number of Poles: 1
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal for specific use cases

Use the Siemens Q170 in panels that serve large single circuits such as high-demand outlets and equipment in homes, small offices, or light industrial spaces. It’s well-suited for retrofit installations where you need to upgrade to a higher amperage circuit breaker without reworking the entire panel. For new builds, it ensures you have a robust, plug-in solution that is quick to deploy and easy to service.