ABB | S5N-2P-450A | Circuit Breaker | 450A | 2-Pole | 600V

ABB S5N-2P-450A is a high-availability circuit breaker designed for demanding industrial power distribution. With a 450A amperage rating, a 2-Pole configuration, and a 600V maximum system voltage, it delivers reliable protection where you need it most.

Designed for maintenance, retrofit, and replacement projects, this ABB breaker steps in where exact specifications matter, ensuring you maintain safe, code-compliant electrical systems without unnecessary downtime.

Key specifications you can rely on

• Amperage: 450A
• Pole count: 2-Pole
• Voltage rating: 600V
• Part number: S5N-2P-450A (best reference for compatibility)

Why this ABB breaker stands out

Compared to generic replacements, the S5N-2P-450A is built to align with ABB’s engineering standards, offering predictable interruption performance and compatibility with ABB panels and installations that specify the S5N family. The two-pole design provides synchronized interruption across two conductors, helping you prevent partial faults from leaving equipment energized.

Ideal use cases

• Maintenance in existing ABB panels or switchgear where the S5N family is specified
• Retrofit projects upgrading protection to a 450A 2-pole, 600V setup
• Replacement of failed breakers in critical infrastructure with matching ratings

Practical notes: Always confirm fit and ratings before ordering. The part number S5N-2P-450A is the best reference for compatibility, ensuring you get an exact match to your panel or switchgear. If you’re unsure, reference the panel’s documentation or contact your distributor with this model line to verify fit.