{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EZC400N3400N","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"EZC400N3400N","canonicalUrl":"https://aoctrl.com/schneider/EZC400N3400N","factsUrl":"https://aoctrl.com/api/mcp/products/EZC400N3400N","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric EasyPact EZC400N series, EZC400N3400N, 3-pole molded case circuit breaker, 400 A rated current, 36 kA breaking capacity at 440 V AC, thermal-magnetic TM-D trip unit.","salesMarkdown":"## What this 400 A MCCB actually does on the line The Schneider Electric EZC400N3400N is a 3-pole molded case circuit breaker from the EasyPact EZC400N family, rated 400 A at 40 °C with a TM-D thermal-magnetic trip unit. The 36 kA Icu at 440 V AC (50/60 Hz) means it can safely interrupt a fault current of that magnitude without welding contacts or venting plasma into the panel — that's the number that decides whether it holds on a 400 V distribution bus or blows upstream. It's a Category A breaker (no intentional short-time delay), so it's built for fast clearing on feeder and distribution duty, not selective coordination downstream of a main. The 400 A frame with a 5000 A magnetic trip threshold gives it a solid pickup for motor-start inrush or transformer energization without nuisance tripping. ## Breaking capacity — the real fit gate The N breaking capacity code on this EZC400N3400N delivers 36 kA Icu at 440 V AC and 40 kA at 220/230 V, both per IEC 60947-2. The TM-D trip unit gives fixed thermal and magnetic settings — no interchangeable rating plugs, so the 400 A is what it is. Fixed mounting on a backplate — no DIN rail, so plan for a drilled mounting surface or an enclosure sub-panel. Front-front connections (line and load both front-accessible) simplify busbar runs and cable entry in a dead-front enclosure. IP20 finger-safe terminals are standard; IK07 impact rating means it handles accidental tool drops during panel work. Positive contact indication on the toggle gives visual confirmation of contact position. The thermal-magnetic trip covers both overload (thermal) and short-circuit (magnetic) protection. No earth-leakage protection built in; if ground-fault is required, pair it with an external RCD or specify the EZC400N with a Vigil option.","metaTitle":"Schneider Electric EZC400N3400N EasyPact EZC400N 3P 400A Cir","metaDescription":"Schneider Electric EZC400N3400N EasyPact EZC400N molded case circuit breaker, 3-pole, 400 A rated current, 36 kA breaking capacity at 440 V AC. TM-D thermal-magnetic trip unit, IEC","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"110 mm","Width":"140 mm","title":"EZC400N3400N","Colour":"Black","Height":"255 mm","Standards":"EN/IEC 60947-2 GB/T 14048.2 JIS C8201-2-2 EN/IEC 60947-1","description":"circuit breaker,Easypact EZC400N,TMD, 400A,3 poles 3d","Control type":"Toggle","Network type":"AC","Mounting mode":"Fixed","Trip unit name":"TM-D","Protection type":"Overload protection Short-circuit protection","lifecycle_stage":"current","Connection pitch":"44 mm","Local signalling":"Positive contact indication","Mounting support":"Backplate","Pollution degree":"3 conforming to IEC 60947","Quantity per set":"1 piece","Range of product":"EasyPact","Trip unit rating":"400 A at 50 °C","Breaking capacity":"36 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 40 kA Icu at 220/230 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 380 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 400/415 V AC 50/60 Hz conforming to IEC 60947-2","Device short name":"Easypact EZC400N","Network frequency":"50/60 Hz","Poles description":"3P","Upside connection":"Front","Device application":"Distribution","[In] rated current":"400 A at 40 °C","Downside connection":"Front","Circuit breaker name":"Easypact EZC400N","Trip unit technology":"Thermal-magnetic","Utilisation category":"Category A","Electrical durability":"Category A: 4000 cycles 415 V AC 50/60 Hz conforming to IEC 60947-2","Mechanical durability":"10000 cycles","Breaking capacity code":"N","IK degree of protection":"IK07 conforming to EN 50102","IP degree of protection":"IP20 conforming to IEC 60529","Earth-leakage protection":"Without","Magnetic tripping current":"5000 A","Product or component type":"Circuit breaker","Suitability for isolation":"Yes conforming to IEC 60947-2","Contact position indicator":"Yes","Neutral protection setting":"Without protection","Protected poles description":"3t","[Ui] rated insulation voltage":"690 V AC 50/60 Hz conforming to IEC 60947-2","[Ue] rated operational voltage":"440 V AC 50/60 Hz conforming to IEC 60947-2","Long time delay adjustment type":"Fixed","Ambient air temperature for storage":"-35...85 °C","Long time pick-up adjustment type Ir":"Fixed","Ambient air temperature for operation":"-25...70 °C","[Ics] rated service breaking capacity":"18 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 20 kA at 220/230 V AC 50/60 Hz conforming to IEC 60947-2 18 kA at 380 V AC 50/60 Hz conforming to IEC 60947-2 18 kA at 400/415 V AC 50/60 Hz conforming to IEC 60947-2","[Uimp] rated impulse withstand voltage":"6 kV conforming to IEC 60947-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$324.61","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7b2a881eb9fda56159b0f76abf3bff63.pdf","sourceUrl":"https://www.se.com/ng/en/product/EZC400N3400N/circuit-breakereasypact-ezc400n-tmd-400a-3-poles-3d/"},"ai":{"faq":[{"question":"Where can I buy EZC400N3400N and what is the lead time?","answer":"The EZC400N3400N is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for the latest lead time and price."},{"question":"What is the closest alternative to EZC400N3400N in the EasyPact family?","answer":"Within the same EasyPact EZC400N frame, the closest alternative is the EZC400N3200N (200 A trip) or EZC400N3250N (250 A trip) if you need a lower amp rating but the same 36 kA breaking capacity and 3-pole form factor. For higher breaking capacity, the EZC400H3400N (H code, 50 kA at 440 V) shares the same footprint but uses a different trip unit calibration. None are pin-compatible in the sense of a drop-in trip unit — the TM-D is fixed."},{"question":"What compliance documentation does Schneider provide for EZC400N3400N?","answer":"The EZC400N3400N is certified to EN/IEC 60947-2, GB/T 14048.2, and JIS C8201-2-2. It carries IP20 finger protection and IK07 impact rating. RoHS and REACH compliance documentation is available from Schneider Electric's product compliance portal; the breaker is suitable for isolation per IEC 60947-2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/EZC400N3400N","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/EZC400N3400N when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}