{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S203P-K32","brand":"ABB","brandSlug":"abb","productSlug":"S203P-K32","canonicalUrl":"https://aoctrl.com/abb/S203P-K32","factsUrl":"https://aoctrl.com/api/mcp/products/S203P-K32","rawCanonicalId":null},"summary":{"shortDescription":"ABB S203P-K32 miniature circuit breaker, 3-pole, 32 A, trip curve K, 480/277 VAC, 10 kA interrupting, DIN rail mount.","salesMarkdown":"## 32 A K-Curve MCB for Motor Branch Circuits The ABB S203P-K32 is a 3-pole miniature circuit breaker rated 32 A with a K-curve trip characteristic, designed for motor branch circuits and inductive loads where inrush currents exceed those of resistive circuits. The K-curve trips magnetically between 8 and 12 times rated current, so it holds through motor starting surges but clears a hard fault fast. At 277 VAC line-to-neutral (480 VAC line-to-line), the interrupting rating is 10 kA — sufficient for most commercial and light industrial panelboards. ## DIN Rail Integration Three-pole width occupies 3 modular units (52.5 mm). Line and load terminals accept up to 25 mm² conductors; torque to 2.5 Nm. For panel builders: the K-curve means this breaker coordinates with downstream contactors and overload relays on motor starters without nuisance tripping on inrush.","metaTitle":"S203P-K32 ABB Miniature Circuit Breaker, 32A 3-Pole K-Curve","metaDescription":"ABB S203P-K32 miniature circuit breaker, 32 A, 3-pole, K-curve, 10 kA interrupting at 277 VAC. DIN rail. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Amps":"32","Type":"Trip Curve K","Poles":"3","title":"S203P-K32","Mounting":"DIN Rail","Volts AC":"277","description":"Breaker, Miniature, 3-Pole, 32 Amp|Miniature Circuit Breaker; 3-Poles, 32 Amps, 480/277 VAC","lifecycle_stage":"current","Interrupt Rating AC":"10 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$55.88","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1b888e9d473400bd32917551d1de57a0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the interrupting rating of S203P-K32?","answer":"The S203P-K32 has a 10 kA interrupting rating at 277 VAC."},{"question":"Will S203P-K32 drop into a panel that was specified around S203-D13 without rewiring?","answer":"Both the S203P-K32 and S203-D13 share the same 3-pole DIN-rail footprint, 277 VAC rating, and 10 kA interrupting capacity. The difference is the trip curve: K-curve (8-12x In) vs D-curve (10-20x In). The K-curve is tighter on magnetic trip, so verify coordination with the existing upstream protective device before swapping."},{"question":"Where can I buy S203P-K32?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S203P-K32","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/S203P-K32 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}