Siemens NEB3B025B 25A 3P 600V Circuit Breaker | AmpState

Meet the Siemens NEB3B025B—a durable 3-pole circuit breaker designed to deliver dependable overcurrent protection in panelboards, load centers, and electrical distribution systems. With a 25-amp rating and a 600V maximum, this unit is built for real-world commercial and light industrial applications where reliable protection matters.

Designed to be a precise replacement part, the NEB3B025B helps you keep your bill of materials (BOM) aligned with the original Siemens specification while minimizing downtime during maintenance or upgrades.

• Amperage and configuration: 25 A, 3 poles (3P) for multi-branch protection
• Voltage rating: 600 V maximum to support typical distribution systems
• Intended use: Ideal for panelboards, load centers, and electrical distribution networks
• Part integrity: Maintains original part-number compatibility (NEB3B025B) for seamless replacements
• Purchase and support: Available from AmpState; assistance available to confirm part fit and compatibility

Use cases and scenarios:

• Replacing a worn or tripped breaker in existing Siemens panel installations without renumbering the BOM
• Stocking a spare for service crews to reduce downtime during outages
• Upgrading or maintaining electrical distribution in commercial environments where 3P protection is required

Why choose this Siemens NEB3B025B from AmpState? You’re getting an authentic Siemens part with a clear lineage to the original specification, designed to fit standard panelboards and load centers that rely on reliable 3P protection at 25A. If you’re unsure about fit, message us and we’ll help confirm compatibility before you purchase.