{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N18559","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N18559","canonicalUrl":"https://aoctrl.com/schneider/A9N18559","factsUrl":"https://aoctrl.com/api/mcp/products/A9N18559","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 Vigi C120 add-on residual current device, A9N18559, 3P, 125 A rated current, 1000 mA earth-leakage sensitivity, Type A-SI (Super Immunised), selective time delay, voltage independent tripping, clip-on 35 mm DIN rail mount, IP20.","salesMarkdown":"The A9N18559 is an add-on residual current device (RCD) from the Schneider Electric Acti9 Vigi C120 range. It is a 3-pole (3P) block rated at 125 A, designed to clip onto a compatible MCB (miniature circuit breaker) via screws, providing earth-leakage protection for outgoing circuits in a distribution board. Its 1000 mA sensitivity and Type A-SI (Super Immunised) classification mean it handles high-leakage industrial loads and is immune to nuisance tripping from transient surges or DC components — a common requirement on variable-speed drive or UPS-fed circuits. Rated at 125 A continuous and 230...415 V AC 50 Hz, this block sits at the incomer or large subfeed position — think main switchboard feeders or high-current distribution. The 1000 mA earth-leakage threshold is deliberately high; it's not for personnel protection (that needs 30 mA) but for equipment and fire protection on circuits where normal leakage from filters and drives already runs tens of milliamps. Selective time delay (marked S) means it coordinates with downstream 30 mA RCDs — the downstream trips first, the upstream block holds off, keeping the rest of the board live. Voltage-independent tripping means it will clear a fault even if the neutral is lost — a safety net for IT or corner-grounded delta systems. Mechanical durability is rated at 20000 cycles — that's a maintenance interval, not a design life for frequent switching. This is a protective device, not a daily disconnect switch. Clip-on mounting onto a 35 mm symmetrical DIN rail, occupying 10 pitches of 9 mm (171 mm width). Tunnel terminals accept 1...50 mm² rigid or 1...35 mm² flexible cable, with stripping length of 15 mm and tightening torque of 3.5 N.m. Designed to EN 61009 and IEC/EN 61009-2-1, with pollution degree 3 per IEC 60947-2 and a rated impulse withstand voltage of 6 kV.","metaTitle":"A9N18559 Acti9 Vigi C120 3P 125A 1000mA RCD Add-on Block","metaDescription":"A9N18559 Acti9 Vigi C120 add-on residual current device, 3P, 125A, 1000mA sensitivity, Type A-SI. Active production. Sourced to order, RFQ for pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"73 mm","Range":"Acti9","Width":"171 mm","title":"A9N18559","Colour":"White","Height":"95 mm","Standards":"EN 61009 IEC/EN 61009-2-1","description":"Vigi C120 - earth leakage add-on block - 3P - 1000 mA - class A si","9 Mm Pitches":"10","Network type":"AC","Product name":"Acti9 Vigi C120","Mounting mode":"Clip-on","lifecycle_stage":"current","Mounting support":"35 mm symmetrical DIN rail","Pollution degree":"3 conforming to IEC 60947-2","Device short name":"Vigi C120","Network frequency":"50 Hz","Poles description":"3P","Tightening torque":"3.5 N.m","[In] rated current":"125 A","Mechanical durability":"20000 cycles","Wire stripping length":"15 mm","Connections - terminals":"Tunnel type terminals 1...35 mm² flexible Tunnel type terminals 1...50 mm² rigid","IP degree of protection":"IP20","Device location in system":"Outgoer Group incomer","Earth-leakage sensitivity":"1000 mA","Product or component type":"Add-on residual current device","Electrical connection to mcb":"By screws","[Ui] rated insulation voltage":"500 V AC 50/60 Hz conforming to IEC 60947-1","Earth-leakage protection class":"Type A-SI (Super Immunised)","[Ue] rated operational voltage":"230...415 V AC 50 Hz","Ambient air temperature for storage":"-40...60 °C","Earth-leakage protection time delay":"Selective","Residual current tripping technology":"Voltage independent","Ambient air temperature for operation":"-25...60 °C","[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/73a8ee7c9cec2421bb7fefde6ed1b54c.pdf","sourceUrl":"https://www.se.com/ae/en/product/A9N18559/vigi-c120-earth-leakage-addon-block-3p-1000-ma-class-a-si/"},"ai":{"faq":[{"question":"What is A9N18559's rated current and earth-leakage sensitivity?","answer":"It is rated at 125 A continuous with a 1000 mA earth-leakage sensitivity, Type A-SI (Super Immunised), selective time delay."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N18559","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/A9N18559 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}}