{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C125N42AFM","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C125N42AFM","canonicalUrl":"https://aoctrl.com/schneider/C125N42AFM","factsUrl":"https://aoctrl.com/api/mcp/products/C125N42AFM","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NS new generation, C125N42AFM, 1250 A at 50 °C, 4P, MicroLogic 2.0 A electronic trip unit, 50 kA Icu at 415 V AC, IP40.","salesMarkdown":"The C125N42AFM is a fixed-mount ComPacT NS new generation MCCB from Schneider Electric, rated 1250 A at 50 °C with a MicroLogic 2.0 A electronic trip unit providing L (long-time overload) and I (instantaneous short-circuit) protection per EN/IEC 60947-2. The 4-pole configuration with neutral on the left handles three-phase distribution with a switched neutral. The IP40 enclosure keeps out tools and wires over 1 mm but not moisture, so mount it in a dry indoor panel or a weatherhead-rated enclosure. Fixed-mount on a backplate (mounting support), with front-facing connections on both the line and load sides — no rear or plug-in base. Dimensions are 327 mm high, 280 mm wide, 147 mm deep, with a 70 mm connection pitch between phases. The LCD display on the front shows real-time current readings (ammeter measurement type), and four red LEDs signal fault types plus one yellow LED for overload. Pollution degree 3 (IEC 60947) means it tolerates conductive dust in industrial environments, but the IP40 rating still calls for a clean panel interior or an additional enclosure for washdown areas.","metaTitle":"C125N42AFM ComPacT NS 1250A 4P MCCB, MicroLogic 2.0, 50 kA 4","metaDescription":"C125N42AFM ComPacT NS new generation MCCB, 1250 A at 50 °C, 4P, MicroLogic 2.0 A electronic trip unit, 50 kA Icu at 415 V AC, IP40. 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":"C125N42AFM","Depth (D)":"147 mm","Standards":"EN/IEC 60947-2","Width (W)":"280 mm","Height (H)":"327 mm","description":"Circuit breaker, ComPacT NS1250N, 50kA at 415VAC, 4P, fixed, manually operated, MicroLogic 2.0A control unit, 1250A","Control type":"Manually operated","Display type":"LCD display","Network type":"AC","Power losses":"44 W","Product name":"ComPacT NS new generation","Mounting mode":"Fixed","Thermal memory":"20 mn","Trip unit name":"MicroLogic 2.0 A","Number of poles":"4P","Protection type":"L : for overload protection (long time) I : for instantaneous short-circuit protection","lifecycle_stage":"current","Connection pitch":"70 mm","Local signalling":"4 LEDs (red) for fault indication 1 LED (yellow) for overload","Mounting support":"Backplate","Neutral position":"Left","Pollution degree":"3 conforming to IEC 60947","Range of product":"ComPacT NS630b...1600 new generation","Trip unit rating":"1250 A at 50 °C","Breaking capacity":"85 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 40 kA Icu at 500/525 V AC 50/60 Hz conforming to IEC 60947-2 30 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2","Network frequency":"50/60 Hz","Relative humidity":"0...95 %","Upside connection":"Front","Device application":"Distribution","Operating altitude":"0...2000 m without derating 2000 m...5000 m with derating","[In] rated current":"1250 A at 50 °C","Downside connection":"Front","Type of measurement":"Ammeter","Overvoltage category":"III","Trip unit technology":"Electronic","Utilisation category":"Category B","Electrical durability":"2000 cycles at 690 V In 3000 cycles at 690 V In/2 4000 cycles at 440 V In 5000 cycles at 440 V In/2","Mechanical durability":"10000 cycles","Breaking capacity code":"N 50 kA 415 V AC","IK degree of protection":"IK07 conforming to EN 50102","IP degree of protection":"IP40 conforming to IEC 60529","Earth-leakage protection":"Without","Product or component type":"Circuit breaker","Suitability for isolation":"Yes conforming to EN/IEC 60947-2","Neutral protection setting":"No protection (3D) 0.5 x Ir (3D + N/2) 1 x Ir (4D)","Protected poles description":"4D","Auxiliary contact composition":"1 NO/NC","[Ui] rated insulation voltage":"800 V AC 50/60 Hz conforming to IEC 60947-2","Trip unit protection functions":"LI","[Ue] rated operational voltage":"690 V AC 50/60 Hz","Zone selective interlocking ZSI":"Without","Electrical shock protection class":"Class II on front face","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-25...70 °C","[Ics] rated service breaking capacity":"50 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 40 kA at 500/525 V AC 50/60 Hz conforming to IEC 60947-2 30 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2","[Tr] Long-Time Delay Adjustment Range":"12.5...600 s at 1.5 x Ir 0.5...24 s at 6 x Ir 0.7...16.6 s at 7.2 x Ir","[Uimp] rated impulse withstand voltage":"8 kV conforming to IEC 60947-2","[Icw] rated short-time withstand current":"19.2 kA 1 s conforming to IEC 60947-2","Long-time protection delay adjustment type tr":"Adjustable 9 settings","[Ir] long-time protection pick-up adjustment range":"0.4...1 x In","Instantaneous protection pick-up adjustment type Ii":"Adjustable","[Ii] instantaneous protection pick-up adjustment range":"1.5...10 x Ir","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable 9 settings"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dcee30b0d7218547ff18ea782b132c5b.pdf","sourceUrl":"https://www.se.com/ph/en/product/C125N42AFM/circuit-breaker-compact-ns1250n-50ka-at-415vac-4p-fixed-manually-operated-micrologic-2-0a-control-unit-1250a/"},"ai":{"faq":[{"question":"How do I get current pricing and availability for C125N42AFM?","answer":"The C125N42AFM is sourced to order through independent distribution. Submit an RFQ — current pricing and availability are confirmed at quote time."},{"question":"What is C125N42AFM's breaking capacity at 415 V AC?","answer":"50 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2. That is the N breaking capacity code — sufficient for most industrial distribution panels at 400 V line voltage."},{"question":"What compliance documentation does Schneider Electric provide for C125N42AFM?","answer":"The MCCB is certified to EN/IEC 60947-2, with IP40 per IEC 60529 and IK07 per EN 50102. Overvoltage category III and pollution degree 3 are listed. RoHS, REACH, and UL documentation are typically included in the manufacturer's compliance pack — request them with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C125N42AFM","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/C125N42AFM 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}}