{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C163TM125C","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C163TM125C","canonicalUrl":"https://aoctrl.com/schneider/C163TM125C","factsUrl":"https://aoctrl.com/api/mcp/products/C163TM125C","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX, TM-D trip unit, thermal-magnetic, 125 A at 50 °C, 3 poles 3D, EN/IEC 60947-2.","salesMarkdown":"It provides LI protection — thermal overload (L) and magnetic short-circuit (I) — for distribution applications in AC or DC networks. Rated 125 A at 50 °C, it fits a 3-pole 3D breaker with fixed mounting. The instantaneous pickup is fixed at 1250 A (10× In), and the long-time pickup is adjustable from 0.7 to 1× In. That means you can dial the overload threshold down to 87.5 A if the load requires it, without changing the trip unit. Rated operational voltage is 690 V AC (50/60 Hz) and 750 V DC, so it handles standard 480Y/277 V and 600 V panels with headroom, and can be used in DC bus applications up to 750 V. This is a trip unit, not a complete breaker — it installs into a ComPacT NSX160 or NSX250 fixed-mount circuit breaker. The TM-D unit has no earth-leakage protection built in. If you need ground-fault detection, you'll need a separate Vigi module or an electronic trip unit with that function. The 3D pole configuration protects all three phases; the neutral is unprotected unless you add a 4-pole breaker. No second-source cross-reference exists within the same frame — the TM-D is the standard thermal-magnetic option for NSX160/250.","metaTitle":"Schneider Electric C163TM125C ComPacT NSX Trip Unit, 125 A,","metaDescription":"Schneider Electric C163TM125C thermal-magnetic trip unit for ComPacT NSX160/250, rated 125 A at 50 °C, 3 poles 3D, EN/IEC 60947-2. Active production, 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":"C163TM125C","Standards":"EN/IEC 60947-2","description":"Trip unit TM125D for ComPacT NSX160/250 circuit breakers, thermal magnetic, rating 125A, 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":"125 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":"Fixed","[Ii] instantaneous protection pick-up adjustment range":"1250 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/0f0f46bbe00095304e094e1a47301214.pdf","sourceUrl":"https://www.se.com/ae/en/product/C163TM125C/trip-unit-tm125d-for-compact-nsx160-250-circuit-breakers-thermal-magnetic-rating-125a-50-degrees-c-3-poles-3d/"},"ai":{"faq":[{"question":"What is C163TM125C's listed range and standards?","answer":"It belongs to the ComPacT NSX100...250 range and complies with EN/IEC 60947-2 for circuit-breaker performance and safety."},{"question":"What are the key ratings of C163TM125C?","answer":"Rated 125 A at 50 °C, 690 V AC / 750 V DC, with a fixed instantaneous pickup of 1250 A and adjustable long-time pickup from 0.7 to 1× In. It provides LI (thermal-magnetic) protection for 3-pole distribution applications."},{"question":"Where can I buy C163TM125C?","answer":"This trip unit is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C163TM125C","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/C163TM125C 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}}