Siemens NFG3B225L Circuit Breaker, 225A, 3-Pole, 600V

The Siemens NFG3B225L circuit breaker is built for industrial electrical service, maintenance, and replacement projects. As part of the durable VL series, this 225 A, 3-pole unit delivers dependable protection for three-phase systems up to 600 V, making it an essential component for demanding facilities and equipment racks.

• Amperage: 225 A
• Poles: 3
• Voltage: 600 V
• Series: VL
• Part Number: NFG3B225L
• Product Type: Circuit Breaker

Why this VL-series breaker stands out

Designed to handle industrial workloads, the NFG3B225L provides robust three-phase protection in a compact, reliable package. Its VL-series lineage is known for consistent performance in service equipment, distribution panels, and replacement scenarios where durable, field-replaceable protection is critical. With a 600 V rating, it is suited for medium-voltage panel setups that power heavy machinery and manufacturing lines.

Ideal use cases

• Main service disconnects in large industrial panels requiring 225 A protection
• Feeders for three-phase equipment and industrial motors in manufacturing environments
• Replacement within existing VL-series installations requiring exact part-number compatibility

Compatibility and verification

To ensure the right fit, verify the application requirements against the part number. The NFG3B225L is the definitive reference for compatibility in VL-series configurations. If you’re unsure about fit, our team can assist with part-number verification and application guidance to confirm seamless installation.

Practical tips for installation and maintenance

• Before ordering, confirm the part number exactly matches NFG3B225L and that the VL-series family is suitable for your panel and voltage requirements.
• Check that the three-pole arrangement aligns with your three-phase distribution, and verify enclosure clearance and mounting compatibility.
• Plan for routine inspections of electrical connections and periodic testing to ensure reliable trip performance in demanding environments.
• Store replacement breakers in a clean, dry area to prevent corrosion or contamination that could affect performance.