{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EZC400N3250","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"EZC400N3250","canonicalUrl":"https://aoctrl.com/schneider/EZC400N3250","factsUrl":"https://aoctrl.com/api/mcp/products/EZC400N3250","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric EasyPact EZC400N, 3-pole circuit breaker, 400 A rated, 36 kA Icu at 440 V AC, thermal-magnetic TM-D trip unit, fixed mount.","salesMarkdown":"The EZC400N3250 is a 3-pole EasyPact EZC400N circuit breaker from Schneider Electric, rated 400 A at 40 °C with a thermal-magnetic TM-D trip unit. This breaker carries a 36 kA Icu (ultimate breaking capacity) at 440 V AC, 50/60 Hz, per IEC 60947-2. At 220/230 V AC it bumps to 40 kA Icu. The 'N' in the part number tells you it's the standard breaking capacity level in the EZC400 family; there's also an 'H' (high) and 'S' (superior) variant if you need more. The TM-D trip unit is thermal-magnetic — a bimetal strip handles overloads (slow response to sustained overcurrent), and a solenoid handles short-circuits (instantaneous trip). The magnetic trip is factory-set to 3500 A, which is about 8.75x the 400 A frame rating. That's a typical fixed magnetic setting for distribution breakers; it avoids nuisance tripping on motor inrush but clears a hard fault fast. Overload protection is adjustable via the TM-D rating plug — this unit ships with a 250 A plug at 50 °C, so if your ambient in the panel runs hot, the breaker derates accordingly. No earth-leakage module built in; you add an external Vigi unit if you need ground-fault protection. Mounts fixed to a backplate — no DIN rail here. Dimensions are 255 mm high, 185 mm wide, 140 mm deep. The 44 mm pole pitch is standard for this class of molded-case breaker, so bus-bar kits and lug kits from the EasyPac range fit without surprises. Front-connect top and bottom means you land cables straight in without reaching around the back. IP20 finger-safe protection on the front; IK07 impact rating means it shrugs off a tool drop or a panel door slam. Pollution degree 3 per IEC 60947 — that's conductive pollution (like dust with moisture), so it's fine in most industrial enclosures but not sealed for washdown. Meets EN/IEC 60947-1 and 60947-2 (low-voltage switchgear and controlgear), plus GB/T 14048.2 (Chinese national standard) and JIS C8201-2-2 (Japanese industrial standard). Utilisation category A means it's not intended for frequent switching under load; that's for the contactor, not the breaker.","metaTitle":"EZC400N3250 EasyPact EZC400N 3P 400A Circuit Breaker, 36kA I","metaDescription":"Schneider Electric EZC400N3250 EasyPact EZC400N 3-pole circuit breaker, 400 A rated current, 36 kA Icu at 440 V AC. Active production. Sourced to order. Quoted against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"140 mm","Width":"185 mm","title":"EZC400N3250","Colour":"Black","Height":"255 mm","Standards":"JIS C8201-2-2 EN/IEC 60947-2 EN/IEC 60947-1 GB/T 14048.2","description":"circuit breaker Easypact EZC400N - TMD - 250 A - 3 poles 3d","Control type":"Toggle","Network type":"AC","Mounting mode":"Fixed","Trip unit name":"TM-D","Protection type":"Short-circuit protection Overload 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":"250 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":"3500 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":"8 kV conforming to IEC 60947-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/678137c46136b4a01e7d90c78d76e6af.pdf","sourceUrl":"https://www.se.com/th/en/product/EZC400N3250/circuit-breaker-easypact-ezc400n-tmd-250-a-3-poles-3d/"},"ai":{"faq":[{"question":"Where can I buy EZC400N3250 and how is it quoted?","answer":"The EZC400N3250 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quote — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of EZC400N3250?","answer":"The ultimate breaking capacity (Icu) is 36 kA at 440 V AC, 36 kA at 380/400/415 V AC, and 40 kA at 220/230 V AC, all per IEC 60947-2. The 'N' code indicates standard breaking capacity level."},{"question":"What compliance documentation does EZC400N3250 carry?","answer":"It meets EN/IEC 60947-1, EN/IEC 60947-2, GB/T 14048.2, and JIS C8201-2-2. It is suitable for isolation per IEC 60947-2 and carries IP20 finger protection and IK07 impact rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/EZC400N3250","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/EZC400N3250 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}}