Siemens | NFK3B225L | Circuit Breaker | 225A | 3-Pole

Meet the Siemens NFK3B225L — a purpose-built 3-pole circuit breaker designed for reliable three-phase protection in demanding industrial and commercial electrical systems. With an amperage rating of 225A, this unit is crafted for high-current distribution where precise, durable protection is non-negotiable. It’s intentionally positioned for maintenance, retrofit, and replacement projects, giving you a dependable component you can trust to keep systems running smoothly.

Key specifications at a glance

• Amperage: 225A
• Poles: 3-Pole
• Part number: NFK3B225L
• Intended use: maintenance, retrofit, and replacement where matching specs are required

Why this model stands out

The NFK3B225L is a purpose-built Siemens circuit breaker that aligns exactly with Siemens panels and compatible distribution gear. Using the precise part number as your compatibility reference minimizes guesswork during replacements, reduces downtime, and ensures the protective device delivers the expected performance in a three-phase setup. This isn’t a generic substitute — it’s a deliberate choice for projects that demand exact-fit protection and dependable operation.

Ideal use cases

• Upgrading or replacing worn or failed 3-phase breakers in industrial or commercial panels
• Retrofit projects where a 3-pole, 225A protection device is required
• Maintenance planning with a clearly identifiable Siemens part number for quick sourcing
• Spare-part readiness for service crews handling high-current electrical distributions

Compatibility and installation guidance

Before ordering, verify fit and ratings by matching the exact part number NFK3B225L to your panel or distribution board. The 3-pole configuration should correspond to your three-phase wiring, and the 225A rating should align with the circuit’s expected load. As with any replacement, consult your panel’s documentation and ensure the Siemens NFK3B225L remains within your system’s protective and safety specifications.

Designed for professionals who need trustworthy, long-lasting protection in demanding environments, the Siemens NFK3B225L provides precise compatibility, solid performance, and peace of mind for critical power distribution tasks. Add it to your cart and safeguard your three-phase circuits with a source trusted by electrical teams worldwide.