Siemens | LGB3K025B | Circuit Breaker | 25A | 3-Pole | 600V | Bolt-On

Siemens LGB3K025B is a robust three‑phase circuit breaker engineered for demanding electrical systems. With a 25A rating, 3 poles, and a 600V maximum, this bolt‑on unit delivers dependable overcurrent protection for motors, feeders, and three‑phase panels in commercial and light industrial environments.

• Amperage: 25A
• Poles: 3‑Pole
• Voltage rating: 600V
• Mounting: Bolt‑On
• Part number: LGB3K025B — best reference for compatibility

This model stands out in retrofit and replacement projects where exact specifications matter. The LGB3K025B aligns with existing Siemens panels and control gear, helping minimize downtime and compatibility surprises during maintenance shutdowns. The bolt‑on design provides secure, vibration‑resistant mounting, while the 3‑pole configuration ensures synchronized protection across all three phases.

Ideal use cases

• Replacing a failed breaker in Siemens or compatible panelboards with identical 25A, 3‑pole, 600V specifications
• Retrofit projects that require precise part matching to reduce installation risk and downtime
• Maintenance of three‑phase feeders in manufacturing lines and commercial equipment
• Protection of motor circuits and other high‑surge applications where reliable trip behavior is essential

Installation and compatibility considerations

• Always confirm fit and ratings before ordering — the part number LGB3K025B is the most reliable reference for compatibility
• Verify panel labeling to ensure the system requires a 3‑pole, 600V, 25A Bolt‑On breaker
• Use appropriate mounting hardware and follow standard torque practices to ensure secure electrical contact

For professionals seeking dependable, Siemens‑engineered protection with clear replacement fit, the LGB3K025B delivers consistent performance, predictable trip characteristics, and straightforward maintenance. Add it to your system to maintain reliable three‑phase protection where it matters most.