{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C104TM040C","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C104TM040C","canonicalUrl":"https://aoctrl.com/schneider/C104TM040C","factsUrl":"https://aoctrl.com/api/mcp/products/C104TM040C","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX100/160, TM-D thermal-magnetic trip unit, rating 40 A at 50 °C, 4 poles 4D, LI protection.","salesMarkdown":"It is rated 40 A at 50 °C, with four protected poles (4D) and the neutral on the left side. The 40 A rating is at 50 °C ambient — if your enclosure runs hotter, you derate. The long-time pickup (Ir) is adjustable from 0.7 to 1.0 × In, so you can fine-tune the overload threshold to the actual load without swapping the trip unit. The thermal delay (tr) is fixed at 120…400 s at 1.5 × In and 15 s at 6 × Ir — that long band at 1.5× lets a moderate overload ride through without opening, which is what you want for a feeder with a mix of loads. The 4D pole configuration protects all four poles, with neutral protection set to 1 × Ir. This trip unit snaps into a ComPacT NSX100 or NSX160 breaker frame — the same frame accepts ratings from 15 A to 160 A, so swapping a trip unit changes the breaker's rating without pulling the whole device off the DIN rail or mounting plate. The breaker itself mounts fixed (not plug-in or drawout), which is typical for distribution panels where you do not need quick swap-out. IP40 front-of-panel protection is standard; the rear terminals are live when the breaker is closed, so standard safe-isolation practice applies.","metaTitle":"Schneider Electric C104TM040C ComPacT NSX TM-D Trip Unit, 40","metaDescription":"Schneider Electric C104TM040C thermal-magnetic trip unit for ComPacT NSX100/160. 40 A at 50°C, 4 poles 4D, IEC 60947-2. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C104TM040C","Standards":"EN/IEC 60947-2","description":"Trip unit TM40D, ComPacT NSX100/160, thermal magnetic, rating 40A, 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":"40 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":"500 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/c9e2be40a44cf3ea1cc1e5897c2db7cd.pdf","sourceUrl":"https://www.se.com/vn/en/product/C104TM040C/trip-unit-tm40d-compact-nsx100-160-thermal-magnetic-rating-40a-50-degrees-c-4-poles-4d/"},"ai":{"faq":[{"question":"Where can I buy C104TM040C and get a price?","answer":"The C104TM040C 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 a firm price and lead time."},{"question":"What standards does C104TM040C comply with?","answer":"The C104TM040C is designed and certified to EN/IEC 60947-2, the standard for low-voltage switchgear and controlgear circuit breakers. It also carries pollution degree 3 per IEC 60947-1."},{"question":"What is the closest alternative to C104TM040C in the ComPacT family?","answer":"Within the same ComPacT NSX100…250 frame, the closest sibling is a TM-D trip unit with a different rating — for example, a 32 A or 50 A unit. The frame, pole configuration, and protection functions are identical; only the thermal-magnetic calibration changes. No pin-compatible drop-in exists outside the TM-D series because the trip unit interface is frame-specific."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C104TM040C","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/C104TM040C 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}}