Siemens SLM1D 800A 3P Circuit Breaker | AmpState

Introducing the Siemens SLM1D 800A 3P Circuit Breaker — a robust protection device built for panelboards, load centers, and comprehensive electrical distribution systems. When your application demands reliable three-phase protection with a high current rating, the SLM1D delivers steady performance and precise tripping behavior to keep equipment and people safe.

This unit is a smart pick for teams who value exact part-number compatibility. With a direct Siemens part-number match, you eliminate guesswork during replacements, streamline maintenance cycles, and reduce the risk of mismatched components in critical assemblies. It’s an especially smart choice for spare inventory where fast, accurate fit matters most.

Key specifications at a glance:

• Part Number: SLM1D
• Manufacturer: Siemens
• Product Type: Circuit Breaker
• Amperage: 800 A
• Poles: 3
• Applications: panelboards, load centers, and general electrical distribution
• Availability: Available from AmpState

Why this matters in real-world setups. An 800-amp, 3-pole configuration provides balanced protection across all three phases, making it suitable for high-load feeders and large motors found in commercial, industrial, or utility-like distributions. By using the exact Siemens SLM1D part, you ensure compatibility with existing Siemens panel ecosystems, maintain consistent trip characteristics, and simplify ordering across multiple projects.

Ideal use cases include:

• Retrofitting or replacing a failed breaker in Siemens-panel installations where performance and compatibility are non-negotiable.
• Maintaining spare parts inventories for facilities with high uptime requirements, so outages don’t derail production schedules.
• Designing new builds or upgrades that require dependable high-current protection for three-phase feeders.
• Distribution rooms, industrial facilities, and data centers where standardized Siemens components streamline maintenance and procurement.

How this breaker helps you outpace downtime and maintenance cycles. The SLM1D’s high-current capability supports large-scale distribution without compromising safety margins. Its three-pole design ensures synchronized protection across all lines, reducing the risk of unbalanced faults and equipment damage. And because it’s a genuine Siemens component, you gain predictable performance and smoother compatibility with existing Siemens gear, panels, and bus assemblies.

Practical tips to maximize value:

• When ordering, pair the SLM1D with corresponding Siemens panel or load-center configurations to avoid cross-compatibility issues.
• Keep a labeled spare on hand as part of a proactive maintenance strategy to minimize downtime during service outages.
• Consult your panel labeling or manufacturer documentation to confirm suitability for your specific voltage and trip characteristics (and reach out if you need help confirming fit).
• Coordinate procurement with AmpState to verify availability and lead times, ensuring you have the right part when you need it.

If you’re unsure about compatibility, AmpState offers assistance to confirm fit for your exact panel or distribution setup. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.