Siemens | CK3B225 | Circuit Breaker | 3-Pole

Siemens CK3B225 is a 3-pole circuit breaker designed to deliver reliable protection in 3-phase electrical systems. This OEM-level device is ideal for maintenance, retrofit, and replacement projects where exact fit and consistent performance matter.

Why choose the CK3B225 for your Siemens panel or compatible equipment?

• 3-Pole design provides synchronized protection across all three current-carrying conductors in a three-phase circuit, helping prevent unbalanced loads and equipment damage.
• OEM compatibility leverages Siemens engineering for dependable operation within approved panels and gear. Use the CK3B225 as the primary reference for compatibility.
• Simplified maintenance with a straightforward swap that minimizes downtime when replacing a worn or tripped breaker.
• Clear part identification ensures you order the correct unit the first time, reducing the risk of mismatches in critical systems.

Ideal use cases include servicing three-phase motor drives, distribution panels, or load centers in commercial or industrial environments where Siemens breakers are specified.

• Match the original breaker part number on your panel labeling to CK3B225.
• Check that the panel rating and physical fit align with a 3-pole breaker designed for your equipment.
• Confirm the line/load configuration and trip characteristics align with your protection requirements.

Important: Confirm fit and ratings before ordering. The part number is the best reference for compatibility.