Siemens | NGB3K030B | Circuit Breaker | 30A | 3-Pole | 347V

Siemens NGB3K030B Circuit Breaker is a precise protective device designed for 3‑phase systems requiring 347V and 30A protection. Built to Siemens' exacting engineering standards, this 3‑pole breaker delivers reliable overload protection and predictable trip behavior, helping keep industrial equipment safe and available.

Key specifications at a glance:

• Amperage: 30A
• Poles: 3‑Pole
• Voltage rating: 347V
• Part number reference: NGB3K030B, the best compatibility identifier

This breaker excels in maintenance, retrofit, and replacement scenarios where exact spec matching matters. If you’re upgrading an older installation or refreshing a critical panel, using the exact Siemens NGB3K030B ensures consistent trip characteristics and predictable behavior under fault conditions.

Why choose this Siemens 3‑pole 347V breaker?

• Exact fit for Siemens panels and assemblies that require a 3‑pole configuration at 347V, reducing the risk of incompatibility or nuisance trips.
• Part-number‑based compatibility: when ordering, verify the NGB3K030B reference to align with the existing panel labeling and catalog data.
• Streamlined maintenance workflow: the same device mindset you rely on for other Siemens protective devices, aiding stock management and service planning.

Practical use tips and considerations:

• Before ordering, confirm that your panel’s voltage and pole configuration align with 347V, 3‑pole protection. The official part number is the most reliable reference for compatibility.
• Use this breaker in environments where precise overload protection at 347V is required, such as certain commercial or industrial equipment racks and distribution panels.
• Keep a record of the part number (NGB3K030B) in maintenance logs to simplify future replacements and warranty checks.

Note: a correct fit is essential for safe operation. If your system uses different voltages, pole counts, or a non‑Siemens panel, identify the exact equivalent for your electrical infrastructure. This Siemens 30A, 3‑Pole, 347V circuit breaker is designed to deliver dependable protection when the spec matches your panel and load requirements.