{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C125H45EFM","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C125H45EFM","canonicalUrl":"https://aoctrl.com/schneider/C125H45EFM","factsUrl":"https://aoctrl.com/api/mcp/products/C125H45EFM","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NS new generation, C125H45EFM, 4-pole MCCB, 1250 A, MicroLogic 5.0 E trip unit, 70 kA Icu at 415 V AC, fixed mount, LCD display, energy meter.","salesMarkdown":"Schneider Electric C125H45EFM is a 4-pole fixed-mount ComPacT NS new generation MCCB. Rated 1250 A at 50 °C with a MicroLogic 5.0 E electronic trip unit that includes an integrated energy meter — the E suffix means it measures and reports energy consumption directly through the trip unit's LCD display. Breaking capacity is 70 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2, with a code H designation. At 220/240 V it reaches 85 kA Icu, and at 660/690 V it holds 42 kA Icu. The trip unit provides L (long-time overload), S (short-time short-circuit), and I (instantaneous) protection curves, plus a 20-minute thermal memory. That thermal memory prevents nuisance tripping on reclose after a brief overload — the breaker remembers the previous thermal state and adjusts the curve so it doesn't trip too early on a second start. Fixed backplate mount, 327 mm high × 280 mm wide × 147 mm deep. Front connections both top and bottom — wire entry and busbar landing on the same face, which simplifies panel layout. Connection pitch is 70 mm, standard for this frame size. IP40 enclosure protection, IK07 impact resistance. Manually operated with an LCD display showing measured values and fault codes — four red LEDs for fault indication, one yellow for overload. Neutral on the left. Rated for 0–2000 m altitude without derating; above that up to 5000 m with derating. 0–95 % relative humidity range.","metaTitle":"C125H45EFM ComPacT NS 1250A 4P MCCB, MicroLogic 5.0 E, 70 kA","metaDescription":"Schneider Electric C125H45EFM ComPacT NS new generation MCCB. 1250 A rated, 4-pole, MicroLogic 5.0 E trip unit with energy metering. 70 kA Icu at 415 V AC. Current production, avai","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)":"280 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":"4P","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","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 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","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":"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":"$3,842.71","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/08bb6d727b9216d94c6768b698210a04.pdf","sourceUrl":"https://www.se.com/vn/en/product/C125H45EFM/circuit-breaker-compact-ns1250h-70ka-at-415vac-4p-fixed-manually-operated-micrologic-5-0e-control-unit-1250a/","alternativesUrl":"https://aoctrl.com/api/mcp/products/C125H45EFM/alternatives.json"},"ai":{"faq":[{"question":"What breaking capacity does C125H45EFM have at 415 V?","answer":"70 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2. The H breaking capacity code designates this level. At 220/240 V it reaches 85 kA Icu, and at 660/690 V it holds 42 kA Icu."},{"question":"What trip unit does C125H45EFM use?","answer":"MicroLogic 5.0 E electronic trip unit with L (overload), S (short-time short-circuit), and I (instantaneous) protection. The E suffix adds integrated energy metering displayed on the LCD. Trip rating is 1250 A at 50 °C."},{"question":"What compliance standards does C125H45EFM meet?","answer":"Designed and tested to EN/IEC 60947-2. Rated for pollution degree 3 and overvoltage category III. IP40 enclosure, IK07 impact resistance. Altitude rating 0–2000 m without derating, up to 5000 m with derating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C125H45EFM","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/C125H45EFM 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}}