Siemens KM3-S800 Circuit Breaker, 800A, 3-Pole, 600V

The Siemens KM3-S800 Circuit Breaker is designed for serious industrial use, delivering reliable protection for demanding electrical systems. With an 800 A rating, a three-pole configuration, and a 600 V operating capacity, this unit is purpose-built for heavy-duty service, maintenance, and replacement projects in industrial environments. Key features that matter in real-world applications

• 800 A continuous current rating for high-demand circuits
• Three-pole design ensures balanced protection across phases
• 600 V maximum system voltage tailored to industrial power distributions
• Part number KM3-S800 used to verify exact compatibility with your equipment
• Siemens reliability and engineering behind essential protection for critical infrastructure

Where this breaker fits best

• Main service entrances and feeders in manufacturing plants, processing facilities, and large workshop layouts
• Replacement in existing distribution panels where high-capacity circuit protection is required
• Motor control centers and heavy electrical distribution where robust interrupting capability is essential

Why verify compatibility and how this helps your project

Compatibility starts with the part number and ends with your application requirements. The KM3-S800 is designed to align with Siemens' engineering standards for industrial protection. To ensure a perfect fit, cross-check the exact model (KM3-S800), the 3-pole configuration, and the 800 A rating against your panel specifications and the equipment it protects. If you’re unsure, you can rely on our support to confirm whether this breaker matches your enclosure, bus geometry, and mounting style.

Practical considerations for installation and use

• Plan for a qualified electrician to install and wire the breaker in accordance with local codes and manufacturer guidelines
• Confirm the panel or switchgear accepts a KM3-S800 form factor and mounting arrangement
• Label the circuit clearly and document the part number for future maintenance or replacements
• Maintain system safety by verifying proper torque on termination terminals and secure mounting

A trusted choice for industrial protection

If you’re updating or replacing aging protection in a demanding environment, the Siemens KM3-S800 offers a clear path to dependable performance. Its high amperage, robust three-pole design, and 600 V capability are built to safeguard critical lines and equipment under peak loads. Interested in confirming compatibility or exploring how this breaker integrates with your existing systems? Message us, and we’ll help verify fit by part number and application requirements to keep your project on track.