{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N18577","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N18577","canonicalUrl":"https://aoctrl.com/schneider/A9N18577","factsUrl":"https://aoctrl.com/api/mcp/products/A9N18577","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Vigi C120, earth leakage add-on block, 3P, 125 A, 500 mA, Type A, IP20, clip-on 35 mm DIN rail.","salesMarkdown":"Rated at 125 A continuous and 500 mA earth-leakage sensitivity, Type A (pulsating DC and sinusoidal AC fault detection), it covers the high-current distribution end of a panel — incomer or large subfeed — on a 230...415 V AC 50/60 Hz network. The 3-pole block mounts via clip-on to a 35 mm symmetrical DIN rail, with tunnel terminals accepting up to 50 mm² rigid or 35 mm² flexible conductors, torqued to 3.5 N·m. The 125 A rated current (In) sets the continuous load capacity — sized for a main incomer or a large sub-distribution feeder, not a branch circuit. The 500 mA earth-leakage sensitivity is a high-threshold setting, typically used where nuisance tripping from leakage in long cable runs or motor drives must be avoided, rather than for personnel protection (which requires 30 mA). Type A detection covers sinusoidal AC faults and pulsating DC faults up to 6 mA DC superimposed — relevant for circuits with single-phase rectifiers, switched-mode power supplies, or variable-speed drives that can generate pulsating DC leakage. Voltage-independent tripping means the RCD operates without needing a separate power supply or the line voltage — it uses the fault current itself to trip, so it remains functional even if the neutral is lost upstream. Rated insulation voltage 500 V AC and impulse withstand 6 kV per IEC 60947-2, pollution degree 3 — suitable for industrial panels where the environment is not clean and transient overvoltages are expected. Clip-on mounting to 35 mm DIN rail, 10 module pitches wide (171 mm), with a depth of 73 mm and height of 95 mm. The white housing and tunnel terminals are standard for panel-building; the 15 mm wire strip length and 3.5 N·m torque are typical for this conductor range. Compliant with EN 61009 and IEC/EN 61009-2-1 (the RCBO standard for RCD + MCB in one unit, though this is an add-on block), and IEC 60947-2 for the insulation and impulse ratings. IP20 finger-safe front; no washdown rating — indoor panel use only.","metaTitle":"Schneider Electric A9N18577 Vigi C120 Earth Leakage Add-on B","metaDescription":"Schneider Electric A9N18577 Vigi C120 earth leakage add-on block, 125 A rated current, 500 mA sensitivity, Type A, 3P. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"73 mm","Width":"171 mm","Colour":"White","Height":"95 mm","Standards":"EN 61009 IEC/EN 61009-2-1","9 Mm Pitches":"10","Network type":"AC","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":"50/60 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":"500 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","[Ue] rated operational voltage":"230...415 V AC 50/60 Hz","Ambient air temperature for storage":"-40...60 °C","Earth-leakage protection time delay":"Instantaneous","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c4d5f1252f0d6b177b8218ee636b4e2d.pdf","sourceUrl":"https://www.se.com/ie/en/product/A9N18577/vigi-c120-earth-leakage-addon-block-3p-500-ma-class-a/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9N18577/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy A9N18577 and how do I get a price?","answer":"The A9N18577 is sourced through independent distribution. Submit an RFQ against this order code; availability and current pricing are confirmed at quote time."},{"question":"What is the closest alternative to A9N18577 in the Vigi C120 family?","answer":"Schneider Electric has not published a direct successor order code for this specific variant. For a parametric match — 125 A, 500 mA, Type A, 3P, voltage-independent — a cross-reference to a current Vigi C120 catalog number should be verified against the panel's existing MCB compatibility and physical footprint before ordering."},{"question":"What compliance documentation does Schneider provide for A9N18577?","answer":"The A9N18577 is certified to EN 61009 and IEC/EN 61009-2-1, with insulation and impulse ratings per IEC 60947-2. RoHS and REACH declarations are typically available from Schneider Electric's documentation portal for this product series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N18577","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/A9N18577 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}}