Siemens | SCLD69400NGT | Circuit Breaker | 400A | 3-Pole | 600V

Introducing the Siemens SCLD69400NGT circuit breaker — a purpose-built protection device for demanding three-phase power systems. With a robust 400A rating, a 3-pole configuration, and a 600V maximum, this unit is engineered to keep critical industrial, commercial, and large equipment installations safe and reliably online.

Why this Siemens breaker stands out

• Exact compatibility you can trust: The part number SCLD69400NGT is your best reference for fit and ratings. Before ordering, double‑check that this model matches your panel and service requirements.
• High-current, three-phase protection: A true 3-pole design delivers balanced protection across all phases, helping prevent uneven current, overheating, and nuisance trips in demanding distribution networks.
• 600V maximum operating voltage: Designed for modern industrial and commercial environments where higher voltage distribution is common, providing reliable overcurrent interruption when needed.
• Maintenance, retrofit, and replacement ready: Ideal for upgrading aging equipment, retrofitting existing panels, or replacing a failing device where the exact specifications are required to maintain system integrity.
• Siemens reliability in critical protection: Built with the engineering attention you expect from Siemens, delivering consistent performance and predictable trip behavior when faults occur.

Who this is for and practical use cases

This breaker is a strong fit for facilities managers, electrical contractors, and engineers tackling panel upgrades or replacements in 3‑phase systems. Use cases include:

• Upgrading legacy distribution panels to meet current safety and reliability standards
• Replacing a failed 400A, 3‑pole, 600V protection device in commercial or light industrial racks
• Installing or retrofitting service feeders and large motor circuits that require solid 3‑phase protection
• Coordinating protection schemes in data centers, manufacturing lines, and energy-intensive equipment rooms

Specifications at a glance

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Part reference: SCLD69400NGT
• Notes: Confirm fit and ratings before ordering; the part number is the best reference for compatibility

Installation and best practices

• Verify panel compatibility and upstream protection to ensure proper coordination with adjacent breakers and devices.
• Have a licensed electrician perform replacement to maintain safety standards and correct torque on connections.
• Keep a record of the catalog number and panel model for future maintenance or warranty considerations.

When you need trustworthy, high-capacity protection that aligns with established Siemens panels and 3-phase systems, the SCLD69400NGT delivers the performance you rely on. It’s not just a breaker—it’s a strategic component for reliability, safety, and long-term electrical system resilience.