{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203-K13","brand":"ABB","brandSlug":"abb","productSlug":"S203-K13","canonicalUrl":"https://aoctrl.com/abb/S203-K13","factsUrl":"https://aoctrl.com/api/mcp/products/S203-K13","rawCanonicalId":null},"summary":{"shortDescription":"ABB S203-K13 miniature circuit breaker, K-curve, 3-pole, 0.17 kg, current production.","salesMarkdown":"## What the K-curve means for the panel The S203-K13: The K-curve trips magnetically between 8 and 12 times rated current, making it the right choice for inductive loads like motors, transformers, and solenoid valves where inrush is higher than a B-curve would tolerate but the application doesn't need the D-curve's 10–20× range. On a 3-pole breaker, that K-characteristic applies across all poles simultaneously — important when you're coordinating downstream contactors or soft-starts that share a common fault path. Lifecycle status is current — no PCN or LTB on this code. No official ABB successor exists because none is needed; this is the active catalog part.","metaTitle":"ABB S203-K13 Miniature Circuit Breaker, K-Curve 3-Pole, Curr","metaDescription":"ABB S203-K13 miniature circuit breaker, K-curve, 3-pole. Current production. Sourced to order against RFQ. Weight 0.17 kg. Category: Molded Case Circuit Breakers.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Part #":"S203-K13","Weight":"0.17 kgs","Category":"Circuit Breakers","Sub Category":"Molded Case Circuit Breakers","Top Category":"Circuit Breakers, Fuses & Protection","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$27.43","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/S203-K13/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy S203-K13 and how do I get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the K-curve on the S203-K13?","answer":"The K-curve trips magnetically between 8 and 12 times rated current, suited for inductive loads like motors and transformers that draw higher inrush than resistive loads."},{"question":"Will S203-K13 drop into a panel specified around SH203T-C32?","answer":"Both are 3-pole DIN-rail miniature circuit breakers from ABB's System pro M compact family with identical 0.17 kg weight and same physical footprint. The difference is the trip curve — S203-K13 uses K-curve (8–12× In) while SH203T-C32 uses C-curve (5–10× In). If the panel was coordinated for C-curve selectivity, swapping to K-curve may shift the coordination study. Check the upstream breaker's let-through and the downstream load's inrush before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203-K13","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/S203-K13 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}