{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9L40621","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9L40621","canonicalUrl":"https://aoctrl.com/schneider/A9L40621","factsUrl":"https://aoctrl.com/api/mcp/products/A9L40621","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 iPRD series, Type 2 surge arrester with pluggable cartridge, 3P+N, 40 kA Imax, 15 kA In, 230/400 V AC, for IT earthing systems, white (RAL 9003).","salesMarkdown":"## Type 2 SPD for IT networks — what the ratings mean It's a 3P+N unit — three phase conductors plus neutral — but note the 'w/o N' in the description: the neutral path is present for the SPD's internal reference, not for load-side neutral distribution. The 40 kA maximum discharge current (Imax) per mode (L/PE and N/PE) tells you it can handle a direct lightning strike's energy without failing catastrophically; the 15 kA nominal discharge current (In) is the rating it must survive 20 surges at without degradation, per IEC 61643-11. That's the number that governs real-world service life on a distribution board. ## IT-system specific — why this matters IT earthing systems are common in hospitals, data centers, and continuous-process plants where a first insulation fault must not trip the supply. The A9L40621 is engineered for that: its MOV + GDT (metal oxide varistor plus gas discharge tube) technology handles the higher phase-to-earth voltages that appear in an IT system during a fault. The maximum continuous operating voltage (Uc) is 460 V L/PE and 260 V N/PE, and the temporary overvoltage (Ut) withstand is 337 V L/N for 5 seconds, with a safe failure mode at 1453 V L/PE for 200 ms. That means it won't explode or catch fire if the system voltage temporarily spikes above nominal — it fails safely, shorting the line to earth and tripping the upstream overcurrent device. Clip-on DIN rail mounting, 72 mm wide (4 modular spaces at 18 mm each), 90 mm deep, 70 mm tall. Tunnel-type terminals on both top and bottom accept 2.5–25 mm² rigid or 4–16 mm² flexible — standard for panel wiring. The remote signalling contact (1 C/O, rated 0.25 A / 250 V AC) lets you wire a status back to a PLC or building management system. The white RAL 9003 housing matches the Acti9 range's aesthetic for visible distribution boards.","metaTitle":"Schneider Electric A9L40621 Acti9 iPRD40r Type 2 SPD, 3P+N,","metaDescription":"Schneider Electric A9L40621 Acti9 iPRD40r Type 2 surge arrester, 3P+N, 40 kA Imax, 15 kA In, for IT earthing systems. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"90 mm","Width":"72 mm","Colour":"White (RAL 9003)","Height":"70 mm","Standards":"EN 61643-11:2012 IEC 61643-11:2011","9 Mm Pitches":"8","Product name":"Acti9 iPRD","Mounting mode":"Clip-on (DIN rail)","Earthing system":"IT","lifecycle_stage":"current","Range Of Product":"Acti9","Range of product":"IPRD","Targeted country":"Norway","Device short name":"iPRD40r","Poles description":"3P + N","Relative humidity":"5...95 %","Remote signalling":"With","Tightening torque":"3.5 N.m","Compatibility code":"IPRD40r","Device application":"Distribution","Operating altitude":"2000 m","Surge arrester type":"Electrical distribution network","Connections - terminals":"Tunnel type terminal (downside) 2.5...25 mm² rigid Tunnel type terminal (upside) 2.5...25 mm² rigid Tunnel type terminal (downside) 4...16 mm² flexible Tunnel type terminal (upside) 4...16 mm² flexible","Short-circuit withstand":"5 kA 415 V Ph/Ph","Disconnector device type":"Associated circuit breaker iC60L 20 A curve C - Icu 25 kA Associated fuse gG 63 A - Icu 15 kA Associated fuse gG 80 A - Icu 50 kA","Maximum discharge current":"Common mode: 40 kA L/PE Common mode: 40 kA N/PE","Nominal discharge current":"Common mode: 15 kA (L/PE) Common mode: 15 kA (N/PE)","Product or component type":"Surge arrester with pluggable cartridge","Surge arrester class type":"Type 2","Surge arrester technology":"MOV + GDT","Signalling circuit voltage":"0.25 A/250 V AC 50/60 Hz","[Ut] temporary overvoltage":"337 V L/N 5 s withstand 1453 V L/PE 200 ms safe failure mode 1453 V N/PE 200 ms safe failure mode","Signal contacts composition":"1 SD (1 C/O)","[Ipe] Ground residual current":"0.6 mA","[Ue] rated operational voltage":"230/400 V AC (+/- 10 %) at 50/60 Hz","Ambient air temperature for storage":"-40...80 °C","Ambient air temperature for operation":"-25...60 °C","Maximum [Up] voltage protection level":"Common mode Common mode <2.2 kV type 2 N/PE","[Uc] maximum continuous operating voltage":"Common mode: 260 V N/PE Common mode: 460 V L/PE"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/vn/en/product/A9L40621/iprd40r-modular-surge-arrester-3p+n-it-w-o-n-460v-with-remote-transfert/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9L40621/alternatives.json"},"ai":{"faq":[{"question":"What is the A9L40621 used for?","answer":"It is a Type 2 surge protective device (SPD) for IT earthing systems in electrical distribution networks. It protects downstream equipment from lightning-induced surges and switching transients on 230/400 V AC three-phase systems with ungrounded neutral."},{"question":"What are the key ratings of the A9L40621?","answer":"Maximum discharge current (Imax) is 40 kA per mode; nominal discharge current (In) is 15 kA per mode; rated voltage is 230/400 V AC; maximum continuous operating voltage (Uc) is 460 V L/PE and 260 V N/PE; protection level (Up) is <2.2 kV."},{"question":"Where can I buy the A9L40621 and get current pricing?","answer":"The A9L40621 is sourced and quoted 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 compliance documentation does the A9L40621 carry?","answer":"The A9L40621 is designed and tested to EN 61643-11:2012 and IEC 61643-11:2011 standards for Type 2 surge protective devices. It carries CE marking for the European market and is targeted for Norway (IT system standard)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9L40621","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/A9L40621 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}}