{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S803S-D25","brand":"ABB","brandSlug":"abb","productSlug":"S803S-D25","canonicalUrl":"https://aoctrl.com/abb/S803S-D25","factsUrl":"https://aoctrl.com/api/mcp/products/S803S-D25","rawCanonicalId":null},"summary":{"shortDescription":"ABB S800S series, S803S-D25 miniature circuit breaker, 3-pole, Trip Curve D, 25 A, 230 VAC, 50 kA interrupting rating, DIN rail mount.","salesMarkdown":"## What the ratings mean for fit The ABB S803S-D25 is a 3-pole miniature circuit breaker from the S800S series, rated 25 A with a Trip Curve D characteristic. The D-curve means it tolerates the high inrush currents typical of motor starting, transformer energisation, and other inductive loads — the magnetic trip threshold sits at 10–20× rated current, so nuisance tripping on start-up is avoided while still clearing a hard short. The 50 kA interrupting rating at 230 VAC tells you this MCB can safely clear a fault up to that level without welding its contacts or cascading damage upstream. That figure matters when the available fault current at the panel is known to be high — it gives selectivity headroom for downstream coordination. Snaps onto standard DIN rail, so it integrates into any 35 mm rail enclosure alongside contactors, relays, and other panel gear. The 3-pole format covers three-phase circuits — motor feeds, distribution sub-mains, or branch circuits where all phases need simultaneous overcurrent protection.","metaTitle":"ABB S803S-D25 MCB, 3P D 25A, 50 kA","metaDescription":"ABB S803S-D25 S800S MCB, 3-pole, Trip Curve D, 25 A, 230 VAC, 50 kA interrupting rating. DIN rail mount. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Amps":"25","Type":"Trip Curve D","Poles":"3","title":"S803S-D25","Mounting":"DIN Rail","Volts AC":"230","description":"ABB S803S-D25 MCB S800S 3P D 25A|ABB S803SD25","lifecycle_stage":"current","Interrupt Rating AC":"50 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f1032bbb0e29891c35df273da6e7c5f4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy S803S-D25?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is S803S-D25's interrupting rating?","answer":"The S803S-D25 has a 50 kA interrupting rating at 230 VAC, which determines the maximum fault current it can safely clear."},{"question":"What does Trip Curve D mean on this MCB?","answer":"Trip Curve D means the magnetic trip operates at 10–20× rated current, making the S803S-D25 suitable for circuits with high inrush loads like motors and transformers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/S803S-D25","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/S803S-D25 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}}