{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N16251","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N16251","canonicalUrl":"https://aoctrl.com/schneider/A9N16251","factsUrl":"https://aoctrl.com/api/mcp/products/A9N16251","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 xID RCCB, 4P, 25 A, 30 mA, Type AC, 400-415 V AC, clip-on DIN rail.","salesMarkdown":"The Schneider Electric A9N16251 is a 4-pole residual current circuit breaker (RCCB) from the Acti9 xID range, rated 25 A with 30 mA earth-leakage sensitivity — the standard threshold for personal protection against direct contact in residential and light commercial final circuits. Breaking and making capacity is 500 A per EN/IEC 61008-1 — adequate for the fault-current levels typical of a sub-distribution board, not a main incomer. The instantaneous trip time means no intentional delay; nuisance tripping on motor-start inrush or capacitive loads is a risk to plan for. Neutral on the left, which is the standard for Schneider distribution boards. Compliance documentation covers EN/IEC 61008-1 and IEC 61008-2-1, plus tropicalisation class 2 per IEC 60068-1 (handles 95 % RH at 55 °C). Pollution degree 2 — suitable for normal industrial and commercial environments where only non-conductive pollution occurs, with occasional condensation. IP20 finger-safe terminals; no washdown rating, so mount inside a panel or enclosure. ## Integration Notes DIN-rail clip-on, 4-pole wide (72 mm), 81 mm tall, 75 mm deep. The 18 mm phase-to-phase pitch matches standard Acti9 busbar systems. Torque terminals to 3.5 N·m top or bottom; strip 14 mm of insulation. Padlocking provision for lockout/tagout on the toggle. Local signalling shows ON, OFF, and fault trip — no auxiliary contact built in, so remote status requires an external add-on. Mechanical and electrical durability are both rated at 4000 cycles — fine for a distribution RCCB switched infrequently. For frequent switching duty (e.g. as a manual disconnect on a machine), consider a contactor or switch-disconnector instead; the RCCB is a protection device first.","metaTitle":"Schneider Electric A9N16251 Acti9 xID RCCB, 25 A, 30 mA, 4P","metaDescription":"Schneider Electric A9N16251 Acti9 xID RCCB, 25 A rated current, 30 mA sensitivity, 4P, 400-415 V AC, Type AC earth leakage. Current production. 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":"75 mm","Range":"Acti9","Width":"72 mm","Colour":"White","Height":"81 mm","Standards":"EN/IEC 61008-1 IEC 61008-2-1 EN 61008-2-1","9 Mm Pitches":"8","Control type":"Toggle","Network type":"AC","Product name":"Acti9 xID","Mounting mode":"Clip-on","Tropicalisation":"2 conforming to IEC 60068-1","lifecycle_stage":"current","Connection pitch":"18 mm between phases","Local signalling":"ON, OFF, fault trip","Mounting support":"DIN rail","Neutral position":"Left","Pollution degree":"2","Device short name":"xID","Network frequency":"50 Hz","Poles description":"4P","Relative humidity":"95 % at 55 °C","Tightening torque":"3.5 N.m top or bottom","[In] rated current":"25 A","Electrical durability":"4000 cycles","Mechanical durability":"4000 cycles","Wire stripping length":"14 mm for top or bottom connection","Connections - terminals":"Tunnel type terminals (top or bottom) 1...35 mm² rigid Tunnel type terminals (top or bottom) 1...25 mm² flexible","IP degree of protection":"IP20","Earth-leakage sensitivity":"30 mA","Product or component type":"Residual current circuit breaker (RCCB)","Suitability for isolation":"Yes","Contact position indicator":"Yes","Locking options description":"Padlocking device","[Ui] rated insulation voltage":"500 V AC 50 Hz","Earth-leakage protection class":"Type AC","[Ue] rated operational voltage":"400...415 V AC 50 Hz","Rated breaking and making capacity":"500 A conforming to EN/IEC 61008-1","Ambient air temperature for storage":"-40...85 °C","Earth-leakage protection time delay":"Instantaneous","Ambient air temperature for operation":"-5...40 °C","[Uimp] rated impulse withstand voltage":"6 kV","Comb busbar and distribution block compatibility":"Downside: biconnect"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/in/en/product/A9N16251/acti-9-xid-residual-circuit-breaker-25-a-4p-30ma-class-ac-instantaneous/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9N16251/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the A9N16251 and get current pricing?","answer":"The A9N16251 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the closest alternative to the A9N16251 in the same family?","answer":"Within the Acti9 xID range, the direct alternative would be a different current rating or sensitivity variant (e.g., 40 A or 100 mA) in the same 4P Type AC form factor. There is no pin-compatible second-source outside the Schneider Acti9 platform — the terminal layout and busbar pitch are proprietary to the series."},{"question":"What is the A9N16251's depth?","answer":"The A9N16251 has a depth of 75 mm from the DIN-rail mounting surface to the front of the toggle."},{"question":"What compliance documentation does Schneider provide for the A9N16251?","answer":"The A9N16251 is certified to EN/IEC 61008-1 and IEC 61008-2-1, with tropicalisation class 2 per IEC 60068-1. Pollution degree 2 and IP20 protection. Standard Schneider declarations of conformity cover CE and UKCA marking for the European and UK markets."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N16251","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/A9N16251 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}}