Siemens ED63B125 - 125 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens ED63B125 is a 125 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for professional installations, it provides robust protection where it matters most—keeping electrical systems safe and uptime steady.

What sets this breaker apart:

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection. This design minimizes movement and wear in environments with vibration or mechanical vibrations, helping maintain reliable protection over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance across a wide range of temperatures and load conditions, reducing nuisance trips and ensuring swift response to faults.
• OEM-compatible compatibility with matching Siemens load centers and panelboards, ensuring a seamless integration into existing electrical infrastructure without compromise.
• Diversified applications suitable for residential, commercial, and light industrial setups, making it a versatile choice for a variety of panel configurations.

Technical snapshot

• Manufacturer: Siemens
• Part Number: ED63B125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

Perfect for panelboard upgrades, subpanel additions, and new installations where a compact, reliable 3-pole protection device is required. It’s well-suited for environments ranging from residential service panels to commercial spaces and light industrial equipment racks, where predictable trip behavior and durable mounting matter most.

Why choose this Siemens 3-pole bolt-on breaker

Choosing the ED63B125 means prioritizing a robust, purpose-built solution designed to pair with Siemens’ own panel products while delivering consistent protection in demanding conditions. The combination of bolt-on rigidity, a thermal-magnetic trip mechanism, and OEM compatibility translates to fewer concerns about fit, alignment, and performance under load—so you can focus on reliable electrical system operation.

Technical reliability, straightforward installation, and clear fitment within Siemens panelboards make the ED63B125 a practical choice for professionals seeking a dependable 125 A, 3-pole solution for branch protection across residential, commercial, and light industrial applications.