{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"2CDS271337R0337","brand":"ABB","brandSlug":"abb","productSlug":"2CDS271337R0337","canonicalUrl":"https://aoctrl.com/abb/2CDS271337R0337","factsUrl":"https://aoctrl.com/api/mcp/products/2CDS271337R0337","rawCanonicalId":null},"summary":{"shortDescription":"ABB 1-Pole MCB (DIN Rail), K tripping curve, 4 A rated current, 440 V rated insulation voltage, 11.2 kA Icn, IP20/IP40, DIN Rail Mount.","salesMarkdown":"## K-curve 4 A — inductive-load branch protection The ABB 2CDS271337R0337 is a 1-pole miniature circuit breaker with K tripping characteristics, rated 4 A continuous current and 440 V rated insulation voltage. The K curve means the magnetic trip threshold sits at 8–12× In — designed to ride through the inrush of transformers, solenoid valves, and motor starters without nuisance tripping on the magnetizing surge. Rated short-circuit breaking capacity Icn is 11.2 kA per the standard, with an ultimate Icu of 15 kA — the breaker clears a fault up to that level without welding the contacts, then remains serviceable. Overvoltage category III rating confirms it is rated for fixed-installation downstream of the service entrance, not just outlet-level protection. ## DIN-rail footprint and panel integration Snaps onto standard 35 mm DIN rail per EN 60715. The 17.5 mm width (1 module) and 69 mm depth fit a single-pole position in any distribution board or control panel — no extra clearance needed beyond the standard busbar comb spacing. Height is 111 mm, matching the ABB S200 series envelope. IP20 on the front face (finger-safe terminals with the breaker in the ON position), IP40 on the sides (tool-proof against wire probes). The bi-directional cylinder-lift terminal accepts both copper and aluminium conductors up to the rated cross-section; tightening torque max 2.8 Nm ensures the connection holds through thermal cycling.","metaTitle":"ABB 2CDS271337R0337 1-Pole MCB, K Curve, 4 A","metaDescription":"ABB 2CDS271337R0337 miniature circuit breaker, K tripping curve, 4 A rated current, 440 V insulation, 11.2 kA Icn. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"69 mm","Poles":"1","Width":"17.5 mm","Height":"111 mm","IP Rating":"IP20;IP40","Mounting Type":"DIN Rail Mount","Rated Current":"4 A","lifecycle_stage":"current","Overvoltage Category":"III","Terminal Contact Type":"Bi-Directional Cylinder Lift","Rated Insulation Voltage":"440 V","Tripping Characteristics":"K","Tightening Torque - Screw-Type Max.":"2.8 Nm","Rated Short-Circuit Breaking Capacity Icn":"11.2 kA","Rated Short-Circuit Breaking Capacity Icu":"15 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$64.72 – $69.11","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7cb1d5ff54fafc0d4839f5f7791fbe60.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/2CDS271337R0337/alternatives.json"},"ai":{"faq":[{"question":"What does the K tripping curve mean on the ABB 2CDS271337R0337?","answer":"The K curve trips magnetically at 8–12 times the rated current (4 A), so the magnetic trip threshold is 32–48 A. This is higher than a B or C curve — it is chosen for circuits with inductive inrush like transformers, solenoid banks, or small motor starters where the start surge would otherwise trip a standard breaker."},{"question":"What is the difference between Icn and Icu on this MCB?","answer":"Icn (11.2 kA) is the rated short-circuit breaking capacity per the product standard — the breaker must clear a fault at that level and still be functional afterward. Icu (15 kA) is the ultimate breaking capacity: it clears the fault once but may not be reusable. For branch-circuit protection, Icn is the design figure; Icu is the safety margin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/2CDS271337R0337","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/2CDS271337R0337 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}}