{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EZ9F53420","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"EZ9F53420","canonicalUrl":"https://aoctrl.com/schneider/EZ9F53420","factsUrl":"https://aoctrl.com/api/mcp/products/EZ9F53420","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Easy9 series, EZ9F53420 miniature circuit breaker, 4-pole, 20 A, C-curve, 3 kA breaking capacity at 400 V AC, DIN-rail mount.","salesMarkdown":"It's a thermal-magnetic MCB for AC distribution circuits, with a breaking capacity of 3 kA Icu at 400 V AC 50/60 Hz, certified to SANS 60947-2. The C-curve means magnetic tripping occurs at 8.5 x In (170 A) within a +/-20% tolerance — standard for general-purpose loads like lighting, socket outlets, and small motor circuits where inrush isn't extreme. For a distribution board fed by a transformer with modest fault levels, this is adequate; if your calculated prospective short-circuit current exceeds 3 kA, you'll need a higher-rated device or a current-limiting upstream breaker. Clip-on mounting to DIN rail, 72 mm wide (4-pole width at 18 mm per pole), 81 mm tall, 66.5 mm deep. That's a standard footprint for a 4P MCB — no surprises on the DIN rail, but check the gland plate depth if you're squeezing it into a shallow enclosure. Pollution degree 2, so it's rated for normal industrial environments with only non-conductive contamination.","metaTitle":"Schneider Electric EZ9F53420 Easy9 MCB, 20 A, 4P, C-Curve, 3","metaDescription":"Schneider Electric EZ9F53420 Easy9 miniature circuit breaker, 20 A rated current, 4 poles, C-curve, 3 kA breaking capacity at 400 V AC. Sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"66.5 mm","Poles":"4P","Range":"Easy9","Width":"72 mm","Colour":"Grey (RAL 7035)","Height":"81 mm","Standards":"SANS 60947-2","Curve code":"C","9 Mm Pitches":"8","Control type":"Toggle","Network type":"AC","Mounting mode":"Clip-on","lifecycle_stage":"current","Limitation class":"3 conforming to SANS 60947-2","Local signalling":"Without","Mounting support":"DIN rail","Pollution degree":"2","Breaking capacity":"3 kA Icu at 400 V AC 50/60 Hz conforming to SANS 60947-2","Device short name":"Easy9 MCB","Network frequency":"50/60 Hz","Relative humidity":"95 % at -5...60 °C","Tightening torque":"2 N.m top or bottom","Device application":"Distribution","[In] rated current":"20 A","Trip unit technology":"Thermal-magnetic","Utilisation category":"Category A","Electrical durability":"4000 cycles","Mechanical durability":"10000 cycles","Connections - terminals":"Tunnel type terminal (top or bottom) 1...25 mm² rigid Tunnel type terminal (top or bottom) 1...25 mm² flexible","IP degree of protection":"IP20 conforming to IEC 60529","Magnetic tripping limit":"8.5 x In +/- 20 %","Number of protected poles":"4","Product or component type":"Miniature circuit-breaker","Suitability for isolation":"Yes conforming to SANS 60947-2","Contact position indicator":"Yes","[Ui] rated insulation voltage":"500 V AC 50/60 Hz conforming to SANS 60947-2","[Ue] rated operational voltage":"400 V AC 50/60 Hz","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-5...60 °C","[Ics] rated service breaking capacity":"3 kA 100 % x Icu at 400 V AC 50/60 Hz conforming to SANS 60947-2","[Uimp] rated impulse withstand voltage":"4 kV conforming to SANS 60947-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/80409ee8a74bbb045ac17635079c61ac.pdf","sourceUrl":"https://www.se.com/vn/en/product/EZ9F53420/miniature-circuit-breaker-mcb-easy9-4p-20a-c-curve-3ka-sans-609472/","alternativesUrl":"https://aoctrl.com/api/mcp/products/EZ9F53420/alternatives.json"},"ai":{"faq":[{"question":"What is EZ9F53420's listed poles (4P) on this component line?","answer":"It is a 4-pole (4P) breaker — all four poles are protected, switching line and neutral in a single-phase or three-phase-plus-neutral distribution board."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/EZ9F53420","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/EZ9F53420 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}}