Siemens | NGB3K070B | Circuit Breaker | 70A | 3-Pole

The Siemens NGB3K070B is a 70‑amp, 3‑pole circuit breaker engineered for reliable protection in three‑phase electrical systems. Built for maintenance, retrofit, and replacement projects where exact specifications matter, this unit helps safeguard your panel while keeping downtime to a minimum.

Key specifications

• Amperage: 70A
• Poles: 3‑Pole
• Part number: NGB3K070B

Note: Confirm fit and ratings before ordering. The part number is the best reference for compatibility.

Why this breaker stands out

• Precise compatibility: Designed to meet the exact specs of Siemens panels and configurations that use the NGB3K070B reference.
• Three‑phase protection: Deliberately sized for 3‑pole installations, providing balanced protection across all phases.
• Serviceable replacement: A practical solution for maintenance and retrofit projects where matching the original specifications minimizes rework.
• Clear, reliable operation: Designed to consistently respond to overloads and adverse conditions, helping to protect downstream equipment and wiring.

Ideal applications

• Maintenance work in commercial or industrial electrical panels requiring a 70A, 3‑pole breaker.
• Retrofit projects where upgrading or replacing aging breakers with exact specifications is essential.
• Replacement in systems that rely on precise part numbers for compatibility and uptime.

Installation and compatibility tips

Before purchasing, verify that the NGB3K070B matches your panel’s required ratings and physical fit. Since part numbers are the best reference for compatibility, cross‑check the exact model to avoid mismatches. If you’re performing the installation yourself, ensure the main disconnect is de‑energized and that local electrical codes are followed. For complex panel configurations or uncertain compatibility, consult a licensed electrician to confirm safe, compliant integration.