{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9L20621","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9L20621","canonicalUrl":"https://aoctrl.com/schneider/A9L20621","factsUrl":"https://aoctrl.com/api/mcp/products/A9L20621","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 iPRD20r Type 2 surge arrester, 3P+N, 460V, with remote signalling, 20 kA max discharge, clip-on DIN rail mount.","salesMarkdown":"The A9L20621 is a Type 2 surge arrester from the Acti9 iPRD20r range, built for IT earthing systems in distribution panels. It uses MOV + GDT technology to clamp line-to-PE and line-to-neutral surges, with a maximum discharge current of 20 kA per mode and a nominal discharge of 5 kA. Rated at 230/400 V AC (+/-10%), it's a 3P+N unit that clips onto a DIN rail — no special tools, just snap it in and torque the tunnel terminals to 3.5 N·m. The 20 kA max discharge (common mode L/PE and N/PE) tells you this arrester can handle a direct lightning strike up to that level without failing catastrophically — but the nominal 5 kA is what it'll see in everyday switching transients. The Uc of 460 V L/PE and 260 V N/PE means it won't degrade under normal line voltage, and the TOV withstand of 337 V L/N for 5 seconds gives you a window before it goes into safe failure mode at 1453 V L/PE. That's important for IT networks where a first fault doesn't trip the supply. The short-circuit withstand of 5 kA at 415 V Ph/Ph means you need an upstream overcurrent device — the manufacturer specifies an iC60L 10 A curve C breaker (Icu 25 kA) or a gG fuse up to 80 A. Without that coordination, a fault downstream could weld the arrester's internal disconnector. The remote signalling contact (1 C/O, rated 0.25 A/250 V AC) lets a PLC or SCADA system know when the cartridge has reached end of life. The clip-on DIN rail mount (9 mm pitch, 8 modules wide) means it occupies 72 mm of rail space — standard for a 3P+N arrester with remote signalling. The tunnel terminals accept 2.5 to 25 mm² rigid or 4 to 16 mm² flexible on both top and bottom, so you can daisy-chain the PE busbar without extra connectors. The white RAL 9003 housing matches the rest of the Acti9 range.","metaTitle":"A9L20621 Acti9 iPRD20r Type 2 Surge Arrester, 3P+N, 460V","metaDescription":"A9L20621 Acti9 iPRD20r Type 2 surge arrester, 3P+N, 460V, with remote signalling. Clip-on DIN rail, 20 kA max discharge. Sourced to order against RFQ.","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":"iPRD20r","Poles description":"3P + N","Relative humidity":"5...95 %","Remote signalling":"With","Tightening torque":"3.5 N.m","Compatibility code":"IPRD20r","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 10 A curve C - Icu 25 kA Associated fuse gG 40 A - Icu 15 kA Associated fuse gG 80 A - Icu 50 kA","Maximum discharge current":"Common mode: 20 kA L/PE Common mode: 20 kA N/PE","Nominal discharge current":"Common mode: 5 kA (L/PE) Common mode: 5 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 <1.8 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/A9L20621/iprd20r-modular-surge-arrester-3p+n-it-w-o-n-460v-with-remote-transfert/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9L20621/alternatives.json"},"ai":{"faq":[{"question":"What is A9L20621 used for?","answer":"It's a Type 2 surge arrester for IT earthing systems in electrical distribution networks, protecting against lightning and switching surges up to 20 kA per mode."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9L20621","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/A9L20621 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}}