{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C125H35EFM","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C125H35EFM","canonicalUrl":"https://aoctrl.com/schneider/C125H35EFM","factsUrl":"https://aoctrl.com/api/mcp/products/C125H35EFM","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NS new generation, C125H35EFM, 3P MCCB, 1250 A, MicroLogic 5.0 E electronic trip unit, 85 kA Icu at 240 V AC, fixed mount, IP40.","salesMarkdown":"The Schneider Electric C125H35EFM is a ComPacT NS new generation molded case circuit breaker, part of the NS630b...1600 range, rated 1250 A at 50 °C with a MicroLogic 5.0 E electronic trip unit. The 85 kA Icu at 220/240 V AC (70 kA at 380/415 V, 65 kA at 440 V, 50 kA at 500/525 V, 42 kA at 660/690 V) per IEC 60947-2 tells you the maximum fault current this breaker can safely interrupt without welding its contacts — critical for selectivity studies and SCCR compliance in a distribution panel. The 1250 A frame means it handles main feeder or large motor circuit duty where the load current stays under that threshold at 50 °C ambient. The MicroLogic 5.0 E trip unit provides L (long-time overload), S (short-time short-circuit), and I (instantaneous) protection curves, plus energy metering — so you get both trip coordination and consumption data from one device. The electronic trip gives adjustable settings, unlike fixed thermal-magnetic units, which matters when you need to fine-tune selectivity with downstream breakers. Fixed mounting on a backplate with front connections top and bottom, 70 mm connection pitch. The 3P (three-pole) configuration suits three-phase AC distribution networks at 50/60 Hz. IP40 enclosure protection keeps out tools and small debris; IK07 impact rating handles incidental knocks during installation. Power losses are 44 W at rated current — useful for thermal management inside a sealed enclosure. The 20-minute thermal memory in the MicroLogic 5.0 E means the trip unit remembers prior heating after a fault, so it doesn't reset too soon on a hot breaker. Electrical durability is 2000 cycles at 690 V In, 3000 at In/2; mechanical durability is 10,000 cycles. That's typical for a distribution-class MCCB — not a switching device, but fine for infrequent manual operations and fault clearing. Altitude derating applies above 2000 m — up to 5000 m with derating. Relative humidity range is 0-95%. Overvoltage category III, utilization category B. These are standard for main distribution boards in commercial and industrial buildings. This MCCB mounts fixed to a backplate — no DIN rail, no draw-out cradle. The 327 mm height, 210 mm width, and 147 mm depth mean it needs a dedicated compartment in the switchboard, not a crowded sub-panel. The LCD display on the MicroLogic 5.0 E shows real-time current, energy, and trip data — useful for commissioning and troubleshooting without a separate meter. Four red LEDs for fault indication and one yellow LED for overload give immediate visual status. Manually operated — no motor operator or shunt trip included, though those can be added as accessories. The 44 W heat dissipation should be factored into the enclosure cooling calculation, especially if multiple breakers are ganged.","metaTitle":"Schneider Electric C125H35EFM ComPacT NS, 1250 A, 85 kA","metaDescription":"Schneider Electric C125H35EFM ComPacT NS new generation molded case circuit breaker, 1250 A, 85 kA Icu at 240 V AC, MicroLogic 5.0 E trip unit, 3P, IP40. Active production, sourced","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 E","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":"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":"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":"$3,360.22","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/62b84cea7e6e3ff5ead058b690f5620c.pdf","sourceUrl":"https://www.se.com/ae/en/product/C125H35EFM/circuit-breaker-compact-ns1250h-70ka-at-415vac-3p-fixed-manually-operated-micrologic-5-0e-control-unit-1250a/","alternativesUrl":"https://aoctrl.com/api/mcp/products/C125H35EFM/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for C125H35EFM?","answer":"Pricing and availability are confirmed at quote time against an RFQ. Submit a request through the storefront for a current quote with lead time."},{"question":"What is C125H35EFM's listed range on this component line?","answer":"The C125H35EFM belongs to the Schneider Electric ComPacT NS new generation range, specifically the ComPacT NS630b...1600 new generation family."},{"question":"What is C125H35EFM's listed depth?","answer":"The C125H35EFM has a depth of 147 mm."},{"question":"What compliance documentation does this brand provide for C125H35EFM?","answer":"The C125H35EFM is designed and tested to EN/IEC 60947-2. It carries IP40 per IEC 60529 and IK07 per EN 50102. Pollution degree 3 per IEC 60947. For specific RoHS, REACH, or UL documentation, the manufacturer's compliance declarations are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C125H35EFM","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/C125H35EFM 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}}