{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C125H320FM","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C125H320FM","canonicalUrl":"https://aoctrl.com/schneider/C125H320FM","factsUrl":"https://aoctrl.com/api/mcp/products/C125H320FM","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NS new generation, C125H320FM, 3P circuit breaker, 1250 A, MicroLogic 2.0 trip unit, 70 kA Icu at 415 V AC, fixed mount.","salesMarkdown":"The C125H320FM is a Schneider Electric ComPacT NS new generation 3-pole circuit breaker rated 1250 A at 50 °C, fitted with a MicroLogic 2.0 electronic trip unit. The 2.0 provides L (long-time overload) and I (instantaneous short-circuit) protection — no ground-fault element. ## Breaking capacity — what the H code means for your fault level At 220/240 V AC it delivers 85 kA Icu; at 440 V AC it is 65 kA Icu; at 500/525 V AC it is 50 kA Icu; and at 660/690 V AC it is 42 kA Icu. All figures are per IEC 60947-2. For a 415 V panel with a transformer rating above 2 MVA, 70 kA Icu gives headroom over a typical 50 kA fault-current spec — no need to cascade or current-limit upstream. ## Installation and environment constraints Fixed-mount on a backplate, with front connections both top and bottom. Connection pitch is 70 mm. The breaker is IP40 rated (finger-safe, not washdown) and carries an IK07 impact rating. Operating altitude is 0–2000 m without derating; derate above that. Overvoltage category III suits fixed-installation distribution panels. ## Durability and thermal behaviour Mechanical durability is 10,000 cycles. The MicroLogic 2.0 trip unit includes a 20-minute thermal memory — after a trip, the breaker remembers the thermal state of the conductors for 20 minutes, preventing immediate re-closure onto a still-hot circuit. Power losses at rated current are 44 W.","metaTitle":"Schneider Electric C125H320FM ComPacT NS Circuit Breaker, 12","metaDescription":"Schneider Electric C125H320FM ComPacT NS new generation 3P circuit breaker. 1250 A at 50 °C, MicroLogic 2.0 trip unit, 70 kA Icu at 415 V AC. Active production. Sourced to order.","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","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","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 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","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":"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":"-50...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","[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":"$2,536.68","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/213deb2b09ae23f910e5ad0ec0ea4fdf.pdf","sourceUrl":"https://www.se.com/au/en/product/C125H320FM/circuit-breaker-compact-ns1250h-70ka-at-415vac-3p-fixed-manually-operated-micrologic-2-0-control-unit-1250a/","alternativesUrl":"https://aoctrl.com/api/mcp/products/C125H320FM/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for C125H320FM?","answer":"Submit an RFQ against this order code. The part is sourced through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is the closest alternative to C125H320FM in the ComPacT family?","answer":"Within the same ComPacT NS630b...1600 new generation range, the closest alternative would be a variant with a different trip unit rating or breaking capacity code. The C125H320FM is a 1250 A, 70 kA at 415 V AC configuration with a MicroLogic 2.0 trip unit. A direct replacement would share the same frame size and trip unit technology."},{"question":"What is C125H320FM's listed range?","answer":"The C125H320FM belongs to the ComPacT NS630b...1600 new generation range, part of the broader ComPacT family."},{"question":"What is C125H320FM's listed depth?","answer":"The depth is 147 mm."},{"question":"What compliance documentation does this brand provide for C125H320FM?","answer":"The breaker is certified to EN/IEC 60947-2 and carries an IP40 rating per IEC 60529 and IK07 per EN 50102. It is suitable for isolation per EN/IEC 60947-2. For RoHS, REACH, and UL documentation, refer to the manufacturer's compliance declarations for the ComPacT NS new generation series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C125H320FM","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/C125H320FM 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}}