{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C104TM025C","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C104TM025C","canonicalUrl":"https://aoctrl.com/schneider/C104TM025C","factsUrl":"https://aoctrl.com/api/mcp/products/C104TM025C","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX100...250 series, TM-D thermal-magnetic trip unit, 25 A at 50 °C, 4 poles 4D, LI protection, EN/IEC 60947-2.","salesMarkdown":"It's the replaceable protection element that determines the breaker's overload and short-circuit response — not the breaker frame itself. Rated 25 A at 50 °C, it protects 4 poles in a 4D configuration, meaning all four poles are monitored and the neutral is fully protected at 1 x Ir. The trip unit carries LI protection: thermal L for overload, magnetic I for short-circuit. The instantaneous magnetic pickup is fixed at 300 A, and the long-time thermal pickup is adjustable from 0.7 to 1 x In. The adjustable long-time pickup (Ir) from 0.7 to 1 x In lets you fine-tune the overload threshold without swapping the trip unit: at 0.7 x In you get a 17.5 A effective setting, at 1.0 x In you get the full 25 A. The fixed instantaneous pickup at 300 A means the magnetic trip clears short-circuits above that level — about 12 x In — which is typical for distribution protection where you want some selectivity downstream. The 4D protected poles with neutral protection at 1 x Ir means the neutral pole is fully rated and monitored — not just switched. This matters for 4-wire systems where the neutral carries load and a fault on any phase needs to be cleared. The fixed long-time delay (tr) gives a 120...400 s band at 1.5 x In and 15 s at 6 x Ir — that's a standard thermal curve for distribution, not for motor starting. If you're protecting a motor load, you'd want a different trip unit with a longer delay.","metaTitle":"Schneider C104TM025C ComPacT NSX Trip Unit, TM-D, 25 A, 4P","metaDescription":"C104TM025C thermal-magnetic trip unit for ComPacT NSX100...250. 25 A at 50 °C, 4 poles 4D, LI protection. EN/IEC 60947-2. Active, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C104TM025C","Standards":"EN/IEC 60947-2","description":"Trip unit TM25D for ComPacT NSX100 circuit breakers, thermal magnetic, rating 25A, 50 degrees C, 4 poles 4D","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","Neutral position":"Left","Pollution degree":"3 conforming to IEC 60947-1","Range of product":"ComPacT NSX100...250","Trip unit rating":"25 A at 50 °C","Network frequency":"50/60 Hz","Poles description":"4P","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","Neutral protection settings":"1 x Ir (4D)","Protected poles description":"4D","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":"Fixed","[Ii] instantaneous protection pick-up adjustment range":"300 A","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/041ccbc37ec4b2486bf993aeb38bef1b.pdf","sourceUrl":"https://www.se.com/ae/en/product/C104TM025C/trip-unit-tm25d-for-compact-nsx100-circuit-breakers-thermal-magnetic-rating-25a-50-degrees-c-4-poles-4d/"},"ai":{"faq":[{"question":"What is C104TM025C's listed range and standards?","answer":"The C104TM025C belongs to the ComPacT NSX100...250 range and complies with EN/IEC 60947-2, the standard for low-voltage circuit breakers."},{"question":"How do I get current pricing and availability for C104TM025C?","answer":"Pricing and availability are confirmed at quote time against an RFQ. Submit a request through the storefront for a current quote on this active-production trip unit."},{"question":"What is the closest alternative to C104TM025C in the ComPacT family?","answer":"The C104TM025C is a specific TM-D trip unit rated 25 A at 50 °C with 4 poles 4D. Within the same ComPacT NSX100...250 platform, the closest alternative would be a different rating (e.g., 32 A or 40 A) or a different trip technology (electronic Micrologic) — but those change the protection curve and adjustability. There is no direct pin-compatible drop-in with identical ratings; the trip unit must match the frame and the application's protection requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C104TM025C","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/C104TM025C 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}}