{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EZC400N3320N","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"EZC400N3320N","canonicalUrl":"https://aoctrl.com/schneider/EZC400N3320N","factsUrl":"https://aoctrl.com/api/mcp/products/EZC400N3320N","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric EasyPact EZC400N, 3-pole MCCB, 400 A rated current, TM-D thermal-magnetic trip unit, 36 kA breaking capacity at 440 V AC.","salesMarkdown":"The Schneider Electric EasyPact EZC400N3320N is a 3-pole moulded-case circuit breaker rated 400 A at 40 °C ambient, with a TM-D thermal-magnetic trip unit set for 320 A at 50 °C. The 320 A figure at elevated temperature governs real-world fit in a non-air-conditioned enclosure. Breaking capacity hits 36 kA Icu at 440 V AC (50/60 Hz) per IEC 60947-2, with 40 kA available at 220/230 V. The N breaking-capacity code places it between standard and high-performance in the EasyPact range — adequate for most distribution panels downstream of a transformer, but verify against your prospective fault current at the mounting point. Magnetic trip is fixed at 4000 A — no adjustment range on the TM-D unit. That means the instantaneous pickup is 10× In (based on the 400 A frame), so it clears bolted faults fast but may coordinate differently with downstream devices than an adjustable electronic trip would. For motor branch circuits or feeders with high inrush, confirm the magnetic setting doesn't nuisance-trip on starting current. Fixed-mount, backplate installation — no DIN-rail adapter on this frame. The toggle operator and positive contact indicator give visual confirmation of breaker state without opening the door. IP20 finger-safe protection on the front face; IK07 impact resistance means it handles incidental tool contact during panel work. Electrical endurance is 4000 cycles at 415 V AC under Category A (no intentional maintenance), mechanical endurance 10,000 cycles. Neutral protection is not provided (3-pole, 3-phase only). For applications requiring ground-fault or neutral protection, you'd need a different frame or an external relay.","metaTitle":"Schneider EasyPact EZC400N3320N 400A 3P MCCB, 36kA 440V","metaDescription":"Schneider Electric EasyPact EZC400N3320N MCCB, 400A rated at 40°C, 36kA Icu at 440V AC. Thermal-magnetic TM-D trip unit. Current lifecycle stage. Sourced to order against RFQ.","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":"EZC400N3320N","Colour":"Black","Height":"255 mm","Standards":"JIS C8201-2-2 EN/IEC 60947-2 GB/T 14048.2 EN/IEC 60947-1","description":"Circuit Breaker Easypact, EZC400N, TMD, 320 A, 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":"320 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":"4000 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":"$347.43","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/57d4e3c15de2179e4fcb41479e7182d5.pdf","sourceUrl":"https://www.se.com/ng/en/product/EZC400N3320N/circuit-breaker-easypact-ezc400n-tmd-320-a-3-poles-3d/"},"ai":{"faq":[{"question":"What is the breaking capacity of EZC400N3320N at 440 V?","answer":"36 kA Icu at 440 V AC 50/60 Hz per IEC 60947-2, with 40 kA available at 220/230 V and 36 kA at 380/400/415 V."},{"question":"What compliance documentation does this brand provide for EZC400N3320N?","answer":"The breaker is certified to EN/IEC 60947-2, JIS C8201-2-2, and GB/T 14048.2. Standard documentation includes the IEC test certificate and manufacturer declaration of conformity — request these with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/EZC400N3320N","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/EZC400N3320N 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}}