{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C253TM250C","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C253TM250C","canonicalUrl":"https://aoctrl.com/schneider/C253TM250C","factsUrl":"https://aoctrl.com/api/mcp/products/C253TM250C","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX250, TM-D trip unit, 250 A at 50 °C, 3-pole 3D, thermal-magnetic LI protection, EN/IEC 60947-2.","salesMarkdown":"It provides LI protection — thermal overload (L) via a fixed long-time delay and adjustable magnetic short-circuit (I) pickup from 5 to 10 x In. The 3-pole 3D configuration suits three-phase distribution panels where earth-leakage protection is handled separately or not required. Rated operational voltage is 690 V AC 50/60 Hz and 750 V DC, so the trip unit handles standard 400/480 VAC distribution as well as DC bus circuits up to 750 V. The long-time protection delay is fixed at 120 to 400 s at 1.5 x In, with a faster 15 s trip at 6 x Ir — that thermal curve is preset and not field-adjustable, so verify coordination with downstream breakers. The instantaneous pickup (Ii) is adjustable from 5 to 10 x In, giving you a 1250 to 2500 A magnetic trip window to avoid nuisance trips on motor inrush while still clearing hard faults. ## Integration notes This is a trip unit, not a complete breaker — it installs into the ComPacT NSX100...250 fixed-mount frame. IP40 front-face protection keeps tools and fingers out but is not washdown-rated; keep the panel sealed if installed in wet areas.","metaTitle":"Schneider Electric C253TM250C ComPacT NSX250 Trip Unit, 250","metaDescription":"C253TM250C trip unit for ComPacT NSX250, 250 A thermal-magnetic, LI protection, EN/IEC 60947-2. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C253TM250C","Standards":"EN/IEC 60947-2","description":"Trip unit TM250D, ComPacT NSX250, thermal magnetic, rating 250A, 50 degrees C, 3 poles 3D","Network type":"AC DC","Trip unit name":"TM-D","Protection type":"L : for overload protection (thermal) I : for short-circuit protection (magnetic)","lifecycle_stage":"current","Pollution degree":"3 conforming to IEC 60947-1","Range of product":"ComPacT NSX100...250","Trip unit rating":"250 A at 50 °C","Network frequency":"50/60 Hz","Poles description":"3P","Device application":"Distribution","Trip unit technology":"Thermal-magnetic","IP degree of protection":"IP40 conforming to IEC 60529","Earth-leakage protection":"Without","Product or component type":"Trip unit","Protected poles description":"3D","Circuit breaker mounting mode":"Fixed","Trip unit protection functions":"LI","[Ue] rated operational voltage":"690 V AC 50/60 Hz 750 V DC","Electrical shock protection class":"Class II","Ambient air temperature for storage":"-50...85 °C","Ambient air temperature for operation":"-25...70 °C","Long-time protection delay adjustment type tr":"Fixed","[Tr] Long-Time Protection Delay Adjustment Range":"120...400 s at 1.5 x In 15 s at 6 x Ir","[Ir] long-time protection pick-up adjustment range":"0.7...1 x In","Instantaneous protection pick-up adjustment type Ii":"Adjustable","[Ii] instantaneous protection pick-up adjustment range":"5...10 x In","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/976c91866de2cea3505937573486d7c0.pdf","sourceUrl":"https://www.se.com/nl/en/product/C253TM250C/trip-unit-tm250d-compact-nsx250-thermal-magnetic-rating-250a-50-degrees-c-3-poles-3d/"},"ai":{"faq":[{"question":"Where can I buy C253TM250C and how do I get a price?","answer":"The C253TM250C is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your required quantity."},{"question":"What is C253TM250C's listed range and standards?","answer":"The C253TM250C belongs to the ComPacT NSX100...250 range and is certified to EN/IEC 60947-2 for circuit-breaker performance and safety."},{"question":"What protection functions does the C253TM250C provide?","answer":"It provides LI protection: thermal overload (L) with a fixed long-time delay, and magnetic short-circuit (I) with an adjustable pickup from 5 to 10 x In."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C253TM250C","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/C253TM250C 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}}