ABB S273-K3 Circuit Breaker, 3A, 3-Pole

Meet the ABB S273-K3 Circuit Breaker — a purpose-built, three-pole protection device rated at 3 A for industrial electrical systems. Engineered by ABB for reliability in service, maintenance, and replacement projects, this breaker ensures fast, predictable disconnection to protect both equipment and personnel in three-phase networks.

• Part Number: S273-K3
• Amperage: 3 A
• Poles: 3
• Type: Circuit Breaker
• Brand: ABB

What makes this model stand out:

• Three-pole protection designed for balanced, three-phase circuits, ensuring coordinated disconnection across all lines.
• Rugged, compact construction ideal for tight industrial panels, switchgear, and control enclosures where dependable protection matters.
• Exact part-number compatibility (S273-K3) helps you confidently match replacements to your equipment documentation.
• ABB engineering lineage supports consistent performance and predictable operation in demanding environments.

Ideal use cases:

• New installations in industrial control panels requiring 3-pole protection with a 3 A rating.
• Maintenance and replacement projects where the S273-K3 specification is specified in equipment manuals.
• Three-phase distribution in manufacturing, processing facilities, warehouses, or compact switchgear environments.

How to verify compatibility and install with confidence:

• Verify fit by the exact part number (S273-K3) and cross-check with your panel schedule, wiring diagram, and protective requirements.
• For uncertain cases, our team can help confirm compatibility based on your system’s three-phase configuration and application needs.

Need help confirming fit or selecting the right ABB component for your project? Our experts are ready to assist with part-number verification and practical installation guidance to keep your maintenance or replacement rollout on track.