Siemens | SJD69400NGTH | Circuit Breaker | 400A | 3-Pole | 600V | Bolt-On

Meet the Siemens SJD69400NGTH Circuit Breaker—a purpose-built, high-current protection solution designed for demanding industrial power systems. With a robust 400A rating, this 3-pole device delivers reliable three-phase protection in environments where uptime and safety matter most. Built for bolt-on mounting, it provides a secure, vibration-resistant connection that stands up to the rigors of busy electrical panels.

This unit is specifically identified by the part number SJD69400NGTH, making it the best reference for compatibility when you’re maintenance, retrofit, or replacement-focused. It’s engineered to handle a 600V operational environment, aligning with common industrial distributions and ensuring consistent protection for critical loads.

Key features at a glance

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Mounting: Bolt-On
• Part reference: SJD69400NGTH
• Best use cases: maintenance, retrofit, and replacement in compatible Siemens panels

Why this bolt-on breaker stands out

Whether you’re upgrading a system to handle higher loads or replacing a worn-out unit, the SJD69400NGTH offers a dependable, field-proven solution. The bolt-on design ensures a solid mechanical grip and durable electrical connections, reducing the risk of loose contacts and improving long-term reliability in industrial settings. The 3-pole configuration provides comprehensive across-the-line protection for three-phase equipment, while the 600V rating covers a broad range of commercial and manufacturing applications.

Ideal applications

• Maintenance and service to preserve safety and continuity in existing Siemens panels
• Retrofits to accommodate higher-current motor drives, conveyors, and heavy machinery
• Replacement during planned downtime to minimize production interruption

How to ensure a precise fit

Before ordering, confirm the panel’s ratings and compatibility with the SJD69400NGTH reference. The part number is the most reliable signal for matching this breaker to your Siemens equipment, helping you avoid compatibility pitfalls and unnecessary lead times. If your system requires a 400A, 3-pole, 600V bolt-on protection device, this Siemens breaker is designed to slot in where specified.

Installation and safety notes

Adhere to all installation guidelines from the manufacturer. Ensure power is isolated during replacement and secure mounting hardware to maintain safe operation. Keeping a compatible spare on hand can reduce downtime and keep critical processes running smoothly.