{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N16321","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N16321","canonicalUrl":"https://aoctrl.com/schneider/A9N16321","factsUrl":"https://aoctrl.com/api/mcp/products/A9N16321","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 xID RCCB, 4P, 25A rated current, 30mA earth leakage sensitivity, 400-415V AC, Type A-SI super immunised, clip-on DIN rail mount.","salesMarkdown":"The Schneider Electric A9N16321 is a 4-pole residual current circuit breaker (RCCB) from the Acti9 xID series, rated at 25 A with 30 mA earth-leakage sensitivity. The Type A-SI (Super Immunised) designation means it handles pulsed DC fault currents from single-phase rectifiers and resists nuisance tripping from high-frequency leakage typical of VFDs and UPS systems — a common requirement on mixed-load panels. Rated breaking and making capacity is 500 A per EN/IEC 61008-1. That figure governs the RCCB's ability to clear a fault without welding contacts — adequate for downstream protection in a sub-distribution board but not a main incomer; selectivity with an upstream MCB or MCCB needs coordination study. Rated insulation voltage (Ui) is 500 V AC, and rated operational voltage (Ue) is 400–415 V AC — the standard 3-phase + neutral supply in European LV networks. The 4P construction switches all four poles (, L2, L3, N) simultaneously, with neutral on the left side per the connection pitch of 18 mm between phases. The 25 A rating matches a typical feeder for lighting, socket outlets, or small mixed loads. Electrical and mechanical durability are both 4000 cycles — this is a protection device, not a switching contactor; it is designed to sit closed for years and trip only on fault, not for frequent manual operation. Tunnel terminals accept 1–35 mm² rigid or 1–25 mm² flexible cable; wire stripping length is 14 mm, and tightening torque is 3.5 N·m top or bottom. IP20 rated — suitable for dry indoor enclosures only. The toggle control provides ON, OFF, and fault-trip local signalling, with a contact position indicator and provision for a padlocking device to lock the circuit off for maintenance isolation. Standards compliance includes EN/IEC 61008-1 and IEC 61008-2-1, with tropicalisation class 2 per IEC 60068-1 (resistance to heat and humidity up to 95% RH at 55 °C).","metaTitle":"Schneider Electric A9N16321 Acti9 xID RCCB, 25A 30mA 4P","metaDescription":"Schneider Electric A9N16321 Acti9 xID RCCB, 25A rated current, 30mA earth leakage sensitivity, 4P, 400-415V AC. Type A-SI super immunised. Current lifecycle stage. Sourced to order","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 EN 61008-2-1 IEC 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 A-SI (Super Immunised)","[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/A9N16321/acti-9-xid-residual-circuit-breaker-25-a-4p-30ma-class-si-instantaneous/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9N16321/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to A9N16321 in the same family?","answer":"Within the Acti9 xID range, the closest sibling differs by rated current or pole count — for example, a 40 A 4P variant or a 25 A 2P variant. There is no pin-compatible drop-in; the selection depends on the feeder current and the number of poles required."},{"question":"Where can I buy A9N16321 and what is the lead time?","answer":"This part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead-time commitment."},{"question":"What compliance documentation does Schneider provide for A9N16321?","answer":"The RCCB is certified to EN/IEC 61008-1 and IEC 61008-2-1, with tropicalisation per IEC 60068-1. Standard Schneider documentation includes the declaration of conformity (CE/UKCA) and the product datasheet. RoHS and REACH compliance are standard for the Acti9 range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N16321","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/A9N16321 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}}