{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C125H35AFM","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C125H35AFM","canonicalUrl":"https://aoctrl.com/schneider/C125H35AFM","factsUrl":"https://aoctrl.com/api/mcp/products/C125H35AFM","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NS new generation, C125H35AFM, 3P fixed MCCB, 1250 A at 50 °C, MicroLogic 5.0 A electronic trip unit LSI, 70 kA Icu at 415 V AC, IP40, front connection.","salesMarkdown":"It carries a MicroLogic 5.0 A electronic trip unit providing LSI protection — long-time overload (L), short-time short-circuit (S), and instantaneous short-circuit (I) — with a 20-minute thermal memory for nuisance-trip avoidance on re-energized loads. Rated 1250 A at 50 °C, it is sized for main feeder or large distribution duty in commercial and industrial switchboards. This breaker is code H, delivering 70 kA Icu at 415 V AC and 85 kA Icu at 240 V AC per IEC 60947-2. At 690 V AC it still holds 42 kA Icu. The utilization category B rating confirms it is suitable for selectivity (cascading) schemes where the breaker must pass through a higher fault current to a downstream device. ## Physical integration into the panel Fixed-mounted on a backplate, this breaker occupies a 210 mm width, 327 mm height, and 147 mm depth footprint — substantial, so verify gland-plate and bus-bar clearance before layout. Both line and load connections are front-accessed, with a 70 mm connection pitch. The IP40 enclosure (IK07 impact) suits indoor switchgear but not washdown; if the panel sees hose-down cleaning, plan for an upstream enclosure. ## What the MicroLogic 5.0 A trip unit gives you The electronic trip unit provides an ammeter display and four red LEDs for fault indication plus one yellow LED for overload pre-alarm. The LSI protection curve is field-adjustable for long-time pickup and delay, short-time pickup and delay, and instantaneous pickup — no earth-leakage module fitted (specified as 'Without'). The 20-minute thermal memory means if the breaker trips on overload and is reclosed quickly, the trip curve accounts for residual heating, preventing re-trip on a still-warm conductor. This matters for motor or transformer feeders where repetitive starting inrush could otherwise cause nuisance trips.","metaTitle":"C125H35AFM ComPacT NS New Generation Circuit Breaker, 1250 A","metaDescription":"Schneider Electric C125H35AFM molded case circuit breaker, ComPacT NS new generation, 1250 A rated current, 70 kA Icu at 415 V AC, MicroLogic 5.0 A trip unit, 3P, fixed. Active pro","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 5.0 A","Number of poles":"3P","Protection type":"L : for overload protection (long time) S : for short time short-circuit protection 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 70 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 65 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 500/525 V AC 50/60 Hz conforming to IEC 60947-2 42 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":"H 70 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":"LSI","[Ue] rated operational voltage":"690 V AC 50/60 Hz","Zone selective interlocking ZSI":"With","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":"52 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 52 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 48 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 37 kA at 500/525 V AC 50/60 Hz conforming to IEC 60947-2 31 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","[Tsd] Short-Time Delay Adjustment Range":"0.1...0.4 s I²t=on 0...0.4 s I²t=off","[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","Short-time protection delay adjustment type tsd":"Adjustable","Short-time protection pick-up adjustment type Isd":"Adjustable 9 settings","[Ir] long-time protection pick-up adjustment range":"0.4...1 x In","Instantaneous protection pick-up adjustment type Ii":"Adjustable","[Isd] Short-time protection pick-up adjustment range":"1.5...10 x Ir","[Ii] instantaneous protection pick-up adjustment range":"Off 2...15 x In","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable 9 settings"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4,949.71","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e4105510fc5643d1c202babe148c2126.pdf","sourceUrl":"https://www.se.com/vn/en/product/C125H35AFM/circuit-breaker-compact-ns1250h-70ka-at-415vac-3p-fixed-manually-operated-micrologic-5-0a-control-unit-1250a/","alternativesUrl":"https://aoctrl.com/api/mcp/products/C125H35AFM/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for C125H35AFM?","answer":"Pricing and stock levels are confirmed at quote time. Submit an RFQ through the storefront; the sourcing desk will return current availability and a firm price for your quantity."},{"question":"What is the closest pin-compatible alternative to C125H35AFM?","answer":"No direct pin-compatible alternative is listed. The MicroLogic 5.0 A trip unit and the specific H breaking capacity code are unique to this order code. For a parametric substitute within the same ComPacT NS new generation family, consult the Schneider Electric selector guide with your required rating and breaking capacity."},{"question":"What compliance documentation does this brand provide for C125H35AFM?","answer":"The breaker is certified to EN/IEC 60947-2. The manufacturer provides a declaration of conformity and the product label carries the relevant marks. For specific RoHS, REACH, or UL documentation, request the compliance package at quote time — it is typically available as a PDF from the manufacturer's document portal."},{"question":"What is C125H35AFM's listed range (ComPacT) on this component line?","answer":"It belongs to the ComPacT NS new generation range, specifically the ComPacT NS630b...1600 new generation product family."},{"question":"What is C125H35AFM's listed depth?","answer":"The depth is 147 mm, with a width of 210 mm and height of 327 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C125H35AFM","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/C125H35AFM 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}}