Siemens KMB3F800 800A 3-Pole 600 V Circuit Breaker

Engineered by Siemens, the KMB3F800 is a high-capacity 3-pole circuit breaker designed to safeguard large electrical systems. With an 800 A current rating and a 600 V nominal voltage, this unit is built for demanding industrial and commercial environments where heavy loads and three-phase power are the norm.

Three-pole protection for balanced reliability: The 3-pole configuration ensures synchronized protection across all three phases, helping prevent phase imbalances that can stress motors and sensitive equipment.

Fast, dependable protection: This breaker provides reliable overload and short-circuit protection, helping minimize equipment damage and downtime. Its robust design makes it suitable as a main or feeder breaker in robust distribution networks.

Seamless integration with Siemens systems: Part Number KMB3F800 identifies a component designed for Siemens-compatible panels and distribution setups, simplifying procurement, replacement, and maintenance in established facilities.

Ideal use cases include main service disconnects in large electrical panels, motor feeders in manufacturing environments, distribution boards in commercial facilities, and upgrades to three-phase power systems where reliability matters most.

• Current rating: 800 A
• Poles: 3
• Voltage rating: 600 V
• Part Number: KMB3F800

Choosing the Siemens KMB3F800 means selecting a protector designed to handle high-current, three-phase service with consistent performance, backed by Siemens engineering and compatibility with a wide range of industrial electrical installations.