{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C125N32EFM","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C125N32EFM","canonicalUrl":"https://aoctrl.com/schneider/C125N32EFM","factsUrl":"https://aoctrl.com/api/mcp/products/C125N32EFM","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NS new generation, C125N32EFM, 3P fixed-mount MCCB, 1250 A MicroLogic 2.0 E electronic trip unit, 50 kA Icu at 415 V AC, IP40, current lifecycle.","salesMarkdown":"The C125N32EFM is a 3-pole fixed-mount ComPacT NS new generation MCCB from Schneider Electric, rated 1250 A at 50 °C with a MicroLogic 2.0 E electronic trip unit. It carries an N breaking capacity code — 50 kA Icu at 380/415 V AC per IEC 60947-2 — which means it can safely interrupt a bolted fault up to that level on a 415 V distribution bus without upstream cascading. The MicroLogic 2.0 E provides L (long-time overload) and I (instantaneous short-circuit) protection curves, with an electronic trip unit that holds thermal memory for 20 minutes after a trip event. That thermal memory matters for motor or transformer feeders where repeated inrush can heat the conductor without reaching the instantaneous threshold — the trip unit remembers the prior thermal state and shortens the allowable cool-down. The energy meter measurement type means the unit reports energy consumption data through the LCD display, useful for submetering a distribution panel without a separate meter. Rated Icu at 440 V AC is 50 kA, dropping to 40 kA at 500/525 V AC and 30 kA at 660/690 V AC. The utilisation category B rating means the breaker is tested for selectivity under short-circuit conditions — it can be used as the main or tie breaker in a selective scheme where downstream devices clear faster and this unit stays closed to keep healthy feeders live. ## Physical integration and environment Fixed backplate mount, 210 mm wide by 327 mm tall by 147 mm deep, with a 70 mm connection pitch. IP40 enclosure protection keeps out tools and debris but is not rated for washdown — this is a dry indoor gear installation. IK07 impact rating means it withstands a 2 J hammer blow, typical for a switchboard environment. Operating altitude is 0 to 2000 m without derating, with derating required above 2000 m up to 5000 m.","metaTitle":"C125N32EFM ComPacT NS new generation, 1250 A, 50 kA at 415 V","metaDescription":"C125N32EFM ComPacT NS new generation 3P fixed-mount MCCB. 1250 A MicroLogic 2.0 E electronic trip unit, 50 kA Icu at 415 V AC. Current lifecycle stage. Sourced to order against RFQ","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Range":"ComPacT","Depth (D)":"147 mm","Standards":"EN/IEC 60947-2","Width (W)":"210 mm","Height (H)":"327 mm","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 E","Number of poles":"3P","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","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":"Energy meter","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","Protected poles description":"3D","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":"$2,562.16","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d392c587e20662e02a9fa564c3d5864c.pdf","sourceUrl":"https://www.se.com/za/en/product/C125N32EFM/circuit-breaker-compact-ns1250n-50ka-at-415vac-3p-fixed-manually-operated-micrologic-2-0e-control-unit-1250a/","alternativesUrl":"https://aoctrl.com/api/mcp/products/C125N32EFM/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy C125N32EFM and how is it quoted?","answer":"We source C125N32EFM to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of C125N32EFM at 415 V?","answer":"50 kA Icu at 380/415 V AC per IEC 60947-2, with an N breaking capacity code. At 220/240 V AC it is 85 kA Icu."},{"question":"What trip unit does C125N32EFM use?","answer":"A MicroLogic 2.0 E electronic trip unit providing L (long-time overload) and I (instantaneous short-circuit) protection, with a 20-minute thermal memory and an energy meter measurement function."},{"question":"What are the physical dimensions of C125N32EFM?","answer":"210 mm wide, 327 mm tall, 147 mm deep. Fixed backplate mount with front-facing connections and a 70 mm connection pitch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C125N32EFM","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/C125N32EFM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}