Siemens Q2125 - 125 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

The Siemens Q2125 is a 125A, 240V, 2-pole plug-in molded case circuit breaker designed to shield your electrical system from branch-circuit overloads and short circuits. Engineered for dependable performance in panelboards and loadcenters, it’s a reliable choice for protection that electricians trust.

• Fast plug-in connection for quick installation and easy replacement, helping minimize downtime during panel upgrades or maintenance.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining thermal (long-term) and magnetic (instantaneous) trip actions to respond to overloads and short circuits.
• OEM-compatible design ensures seamless integration with matching Siemens OEM load centers and panelboards, simplifying stocking and future upgrades.
• Versatile application suitable for residential, commercial, and light industrial environments where reliable branch-circuit protection is required.

The Q2125 is built to handle demanding loads while delivering precise protection. Its 2-pole configuration ensures both live conductors disconnect simultaneously, enhancing safety and reducing potential arcing. The plug-in mounting style streamlines panel maintenance and replacement processes, allowing you to rapidly swap in a new unit without rewiring.

Technical specifications

• Manufacturer: Siemens
• Part Number: Q2125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases include panelboard and loadcenter installations where a trusted 125A, 240V, 2-pole plug-in breaker is required to protect larger branch circuits, feeders, or subpanel connections. With its robust construction and precise trip characteristics, the Siemens Q2125 helps you maintain electrical safety, reliability, and service continuity across a range of settings.