Siemens MBK225 - 225 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

Meet Siemens MBK225 — a 225 A, 240 V, 2-pole plug-in molded case circuit breaker designed to deliver dependable overcurrent and short-circuit protection for panelboards and loadcenters. Built to integrate seamlessly with Siemens systems, this unit ensures fast installation and straightforward replacement without sacrificing protection quality.

• Fast plug-in connection for quick installation and hassle-free replacements, reducing downtime during panel maintenance.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance against overcurrent and short circuits across a range of load profiles.
• OEM compatibility matches Siemens load centers and panelboards, ensuring proper fit, trip characteristics, and electrical coordination.
• Versatile application suitable for residential, commercial, and light industrial installations where robust branch circuit protection is needed.

Key specifications

• Manufacturer: Siemens
• Part Number: MBK225
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 225 A
• Voltage Rating: 240 V
• Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Why choose MBK225 in your electrical panel? It offers a precise balance of protection and ease of service. The plug-in design allows quick swaps when panels are upgraded or serviced, while the thermal-magnetic trip mechanism responds quickly to fault conditions, helping to prevent damage to connected equipment and wiring. By selecting an MBK225, you’re choosing a component that aligns with Siemens' panel ecosystems, reducing the risk of mismatched trip curves and ensuring reliable coordination with your existing protection scheme.

Ideal use cases include replacing aging MCCBs in residential subpanels, updating commercial service panels, or stocking spare breakers for dependable emergency maintenance in light industrial settings. Whether you’re a licensed electrician, facility manager, or DIYer with a compliant electrical project, MBK225 provides the protection your circuits demand without complicating your panel design.