{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"2CDS253103R0254","brand":"ABB","brandSlug":"abb","productSlug":"2CDS253103R0254","canonicalUrl":"https://aoctrl.com/abb/2CDS253103R0254","factsUrl":"https://aoctrl.com/api/mcp/products/2CDS253103R0254","rawCanonicalId":null},"summary":{"shortDescription":"ABB System pro M compact S200 series, 4-pole MCB (DIN Rail), 2CDS253103R0254, C-curve, 25 A, 440 V, 6 kA Icn / 20 kA Icu, IP20 / IP40.","salesMarkdown":"## Line-down fit check — 25 A, C-curve, 4-pole ABB 2CDS253103R0254 is a 4-pole miniature circuit breaker from the System pro M compact S200 series, rated 25 A with a C tripping characteristic. The C-curve means it trips between 5× and 10× rated current — standard for inductive and motor-start loads where inrush is higher than a resistive heater but lower than a transformer bank. Rated short-circuit breaking capacity Icn is 6 kA per IEC 60898, with an ultimate Icu of 20 kA per IEC 60947-2. The Icu figure tells you the breaker can safely clear a fault up to 20 kA once — the Icn is the service rating for repeated operation. For a distribution board fed from a transformer with a prospective short-circuit current under 6 kA, this breaker holds up across multiple faults without needing replacement after every trip. ## What the 25 A and C-curve mean for a panel builder The 25 A rating with a C-curve is sized for general lighting and socket-outlet circuits in commercial or light-industrial panels, or for motor branch circuits where the starting surge stays within 5–10× In. Rated insulation voltage is 440 V — the breaker fits three-phase 400 V systems with margin. Overvoltage category III means it's rated for fixed-installation distribution boards, not for equipment-level protection. Mounts on a DIN rail — snaps into the standard 35 mm profile. The bi-directional cylinder-lift terminals accept both busbar and cable entry from either side, and the tightening torque max of 2.8 Nm is typical for 25 A terminals: a standard screwdriver with a torque-limiting handle avoids over-torque that cracks the housing. ## IP rating and enclosure fit Rated IP20 on the front face — protected against finger contact but not water ingress. IP40 applies to the enclosure sides when the breaker is mounted in a distribution board. This is the standard rating for indoor DIN-rail MCBs in a closed panel; no special sealing needed for a clean, dry electrical room.","metaTitle":"ABB 2CDS253103R0254 4-Pole MCB, C-Curve, 25 A, 6 kA","metaDescription":"ABB 2CDS253103R0254 miniature circuit breaker, 4-pole, C-curve, 25 A rated current, 6 kA Icn, 20 kA Icu. DIN rail mount. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"69 mm","Poles":"4","Width":"70 mm","title":"2CDS253103R0254","Height":"88 mm","IP Rating":"IP20;IP40","description":"Miniature Circuit Breaker, C, 25A, 440V, IP20 / IP40","Mounting Type":"DIN Rail Mount","Rated Current":"25 A","lifecycle_stage":"current","Overvoltage Category":"III","Terminal Contact Type":"Bi-Directional Cylinder Lift","Rated Insulation Voltage":"440 V","Tripping Characteristics":"C","Tightening Torque - Screw-Type Max.":"2.8 Nm","Rated Short-Circuit Breaking Capacity Icn":"6 kA","Rated Short-Circuit Breaking Capacity Icu":"20 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$24.13","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1a963bd5fceef66361105c94b2d8f275.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the breaking capacity on this breaker — Icn vs Icu?","answer":"Icn (rated short-circuit breaking capacity per IEC 60898) is 6 kA. Icu (ultimate breaking capacity per IEC 60947-2) is 20 kA. The Icn is the service rating — the breaker can be relied on to clear faults up to 6 kA repeatedly. The Icu of 20 kA is the one-shot maximum it can interrupt without exploding; after a fault at that level the breaker must be replaced."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/2CDS253103R0254","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/2CDS253103R0254 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}}