ABB S203UP-K2 2A 3P 480V Circuit Breaker, Bolt-On | AmpState

The ABB S203UP-K2 is a 2 A, 3-pole, 480V bolt-on circuit breaker crafted for dependable circuit protection in panelboards, load centers, and comprehensive electrical distribution networks. This unit is particularly valuable for retrofit work and maintenance planning, where keeping a consistent part number simplifies inventory and scheduling without sacrificing safety or performance.

• Bolt-on mounting design enables quick, secure installation in compatible ABB panels, minimizing downtime during upgrades or repairs.
• 3-pole, 480V capacity makes it ideal for three-phase distribution systems common in commercial and industrial environments.
• 2 A amperage rating provides precise protection for small feeders and sensitive equipment within a larger electrical distribution scheme.
• Stable part number (S203UP-K2) is especially advantageous for retrofit projects where consistent SKU identification supports maintenance planning and parts stocking.
• ABB reliability ensures compatibility with your existing ABB distribution ecosystem, reducing integration risk and simplifying future replacements.
• Easy procurement through AmpState with support to confirm fit and compatibility for your specific panel or load center.

Who should consider the ABB S203UP-K2?

Electrical contractors, facility managers, and maintenance teams working in industrial or commercial settings where 480V three-phase power is standard will appreciate the clarity and ease of use this bolt-on breaker delivers. When upgrades or routine maintenance demand a precise, compatible replacement that won’t disrupt your electrical protection plan, the S203UP-K2 provides a reliable, long-term solution.

Use cases and practical scenarios

• Retrofit projects where you must preserve a specific part number while upgrading protection and performance.
• Maintenance planning for panelboards and load centers that require a predictable, serviceable 3P 480V breaker in the 2 A range.
• Replacement in ABB-based electrical distributions to maintain system compatibility and reduce field rework.

Need help matching a part number or confirming compatibility? AmpState is ready to assist—send a message and we’ll help you verify fit for your panel, bus configuration, and overall electrical layout.