ABB | S5N-2P-400A | Circuit Breaker | 400A | 2-Pole | 600V

ABB S5N-2P-400A circuit breaker delivers dependable overcurrent protection for demanding industrial power distributions. With a 400 A rating, a 2-pole configuration, and a 600 V nominal rating, this unit is designed to safeguard feeders and critical equipment in manufacturing, facilities, and large electrical panels. It's the go-to choice for maintenance, retrofit, and replacement projects where exact specifications matter.

• Amperage: 400 A
• Poles: 2-Pole
• Voltage: 600 V
• Part reference: S5N-2P-400A
• Applications: Maintenance, retrofit, and replacement in panels and switchgear requiring matching specs

Why choose this ABB unit? The S5N-2P-400A pairing is tailored for systems where precise, reliable protection is non‑negotiable. The part number S5N-2P-400A serves as the bestCompatibility reference, so before ordering, confirm fit and ratings against your equipment and panel manufacturer specifications to ensure seamless interchange with existing gear.

Ideal use scenarios include replacing a failed breaker in a mid- to large-sized distribution panel, upgrading protection for high‑current feeders, or retrofitting older installations to comply with current 600 V system requirements. This model is built to align with ABB’s longstanding performance standards, providing predictable operation and straightforward installation for professionals handling industrial electrical infrastructure.

Practical notes for installation and selection:

• Always verify that your panel or switchgear supports a 2‑pole device and a 600 V rating for safe, compliant operation.
• Cross-check the exact part number (S5N-2P-400A) as the primary reference to ensure mechanical fit and electrical compatibility.
• Engage a qualified electrician to perform installation, and keep panel labeling in sync with the protective device specifications.