{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EZC400H4320N","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"EZC400H4320N","canonicalUrl":"https://aoctrl.com/schneider/EZC400H4320N","factsUrl":"https://aoctrl.com/api/mcp/products/EZC400H4320N","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric EasyPact EZC400H, 4-pole MCCB, 400 A at 40 °C, 50 kA Icu at 400-415 V AC, thermal-magnetic TM-D trip unit, fixed mount, IP20.","salesMarkdown":"The EZC400H4320N is a 4-pole EasyPact EZC400H moulded-case circuit breaker rated 400 A at 40 °C with a thermal-magnetic TM-D trip unit. The 50 kA Icu at 400–415 V AC is the interrupting capacity under IEC 60947-2 — it can safely clear a fault up to 50 kA without welding or rupturing. The TM-D trip unit's magnetic pickup is fixed at 5000 A, which is about 12.5× In — a typical instantaneous threshold for thermal-magnetic MCCBs protecting cable or distribution bus. Plan for that derating if the enclosure is tightly packed or poorly ventilated. ## Deployment context Fixed-mount on a backplate with front-front connections — typical for distribution panels where the breaker bolts to a bus or sub-feed. The 45 mm connection pitch matches standard busbar spacing for 4-pole MCCBs in this frame. The EasyPact EZC400H series is Schneider's standard-distribution MCCB line, so it's widely stocked through distribution.","metaTitle":"Schneider Electric EZC400H4320N EasyPact EZC400H MCCB, 400 A","metaDescription":"Schneider Electric EZC400H4320N EasyPact EZC400H 4-pole MCCB, 400 A rated current at 40 °C, 50 kA Icu at 400-415 V AC. Thermal-magnetic TM-D trip unit. Current production. Quoted t","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"140 mm","Width":"185 mm","title":"EZC400H4320N","Colour":"Black","Height":"255 mm","Standards":"EN/IEC 60947-1 GB/T 14048.2 JIS C8201-2-2 EN/IEC 60947-2","description":"circuit breaker Easypact EZC400H - TMD - 320 A - 4 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":"45 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":"320 A at 50 °C","Breaking capacity":"50 kA Icu at 380 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 400...415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 70 kA Icu at 220...240 V AC 50/60 Hz conforming to IEC 60947-2","Device short name":"Easypact EZC400H","Network frequency":"50/60 Hz","Poles description":"4P","Upside connection":"Front","Device application":"Distribution","[In] rated current":"400 A at 40 °C","Downside connection":"Front","Circuit breaker name":"Easypact EZC400H","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":"H","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":"25 kA at 380 V AC 50/60 Hz conforming to IEC 60947-2 25 kA at 400/415 V AC 50/60 Hz conforming to IEC 60947-2 25 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 35 kA at 220/230 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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f8e327b3e81f713f9730be864cf8a46b.pdf","sourceUrl":"https://www.se.com/ae/en/product/EZC400H4320N/circuit-breaker-easypact-ezc400h-tmd-320-a-4-poles-3d/"},"ai":{"faq":[{"question":"What is the breaking capacity of EZC400H4320N at 400 V?","answer":"50 kA Icu at 400–415 V AC 50/60 Hz per IEC 60947-2. At 220–240 V it rises to 70 kA Icu."},{"question":"What compliance documentation does this breaker carry?","answer":"Certified to EN/IEC 60947-1, EN/IEC 60947-2, GB/T 14048.2, and JIS C8201-2-2. Suitable for isolation per IEC 60947-2."},{"question":"Where can I buy EZC400H4320N?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/EZC400H4320N","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/EZC400H4320N 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}}