Siemens | NGG1B030 | Circuit Breaker | 30A | 1-Pole | 347V

Meet the Siemens NGG1B030, a purpose-built 30A, 1-pole circuit breaker designed for 347V electrical environments. This unit is crafted for maintenance, retrofit, and replacement projects where precise compatibility and reliable overcurrent protection are essential.

Why choose the Siemens NGG1B030?

• Exact 30A protection to guard circuits against overloads, helping prevent wiring damage and unplanned outages while supporting consistent performance in demanding load conditions.
• Single-pole design ideal for straightforward, space-efficient disconnects in compatible panels and 1-phase distribution setups.
• 347V compatibility tailored for higher-voltage systems often found in commercial or industrial applications, ensuring appropriate interruption within the voltage range.
• Clear reference for compatibility the part number NGG1B030 serves as the definitive reference when matching with Siemens panels and bus configurations.
• Maintenance, retrofit, and replacement-ready a dependable choice when upgrading aging infrastructure or restoring protection after component wear.

What problems does it solve?

The NGG1B030 provides reliable, predictable trip behavior, helping you maintain electrical safety and system uptime. By delivering precise current interruption at or below 30A, it protects conductors, devices, and downstream equipment from overheating and fault conditions in 347V circuits.

Ideal use cases

• Retrofit projects in existing Siemens panels that operate at 347V, where a like-for-like 30A, 1-pole breaker is required.
• Maintenance replacements to quickly restore protection without altering panel configurations.
• New installations or panel upgrades in commercial/industrial settings that utilize 347V distribution networks.

Fit and compatibility notes

Notes: Confirm fit and ratings before ordering. The part number is the best reference for compatibility with your Siemens panel. If you’re unsure, cross-check the panel model, bus arrangement, and voltage requirements against the NGG1B030 specifications.

Practical installation tips

• Power down the panel and follow proper lockout/tagout procedures before servicing.
• Install the NGG1B030 in panels that accept Siemens NGG1B-series breakers and support 347V circuits.
• Operate within the 30A rating to maintain safe, reliable protection for your circuit.