{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9L20221","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9L20221","canonicalUrl":"https://aoctrl.com/schneider/A9L20221","factsUrl":"https://aoctrl.com/api/mcp/products/A9L20221","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 iPRD20r Type 2 surge arrester, A9L20221, 2P, 460 V, IT earthing, 20 kA max discharge, with remote signalling.","salesMarkdown":"It clamps line-to-PE surges via a metal-oxide varistor (MOV) stage, rated for a nominal discharge current of 5 kA (L/PE) and a maximum discharge of 20 kA (L/PE). The protection level Up stays under 1.8 kV (L/PE), which keeps the let-through voltage inside the impulse withstand of most downstream equipment. ## Voltage ratings and temporary overvoltage handling Rated operational voltage is 230 V AC (±10 %) at 50/60 Hz, with a maximum continuous operating voltage Uc of 460 V (L/PE). The temporary overvoltage (TOV) withstand is specified: 337 V L/N for 5 seconds, and a safe failure mode at 1453 V L/PE for 200 ms — meaning the arrester will fail short-circuit rather than explode under a sustained high-voltage fault, which is critical for IT systems where the first fault doesn't trip the supply. Clip-on DIN rail mounting, 36 mm wide (2-pole width), 90 mm deep, 70 mm tall — fits a standard 4-module pitch on the rail. Tunnel-type terminals accept 2.5 to 25 mm² rigid or 4 to 16 mm² flexible on both sides; tighten to 3.5 N·m. The remote-signalling contact (1 C/O, rated 0.25 A / 250 V AC) lets a PLC or DCS monitor arrester status without climbing the panel. ## Short-circuit coordination and standards The arrester must be paired with an upstream overcurrent device: either an iC60L 10 A curve C breaker (Icu 25 kA) or a gG fuse rated 40 A or 80 A (Isc 15 kA or 50 kA respectively). Its own short-circuit withstand is 5 kA at 415 V phase-to-phase. Compliance with EN 61643-11:2012 and IEC 61643-11:2011 is listed — the Type 2 classification means it's designed for the main distribution board, not the service entrance.","metaTitle":"Schneider Electric A9L20221 Acti9 iPRD20r Surge Arrester, 2P","metaDescription":"Schneider Electric A9L20221 Acti9 iPRD20r Type 2 surge arrester. 2P, 460V, IT earthing, 20 kA max discharge. Active production. Order to RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"90 mm","Width":"36 mm","Colour":"White (RAL 9003)","Height":"70 mm","Standards":"EN 61643-11:2012 IEC 61643-11:2011","9 Mm Pitches":"4","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":"2P","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","Nominal discharge current":"Common mode: 5 kA (L/PE)","Product or component type":"Surge arrester with pluggable cartridge","Surge arrester class type":"Type 2","Surge arrester technology":"MOV","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","Signal contacts composition":"1 SD (1 C/O)","[Ipe] Ground residual current":"0.6 mA","[Ue] rated operational voltage":"230 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 <1.8 kV type 2 L/PE","[Uc] maximum continuous operating voltage":"Common mode: 460 V L/PE"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/sg/en/product/A9L20221/iprd20r-modular-surge-arrester-2p-it-460v-with-remote-transfert/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9L20221/alternatives.json"},"ai":{"faq":[{"question":"What is the A9L20221 used for?","answer":"It is a Type 2 surge arrester for electrical distribution networks in IT earthing systems (floating neutral), typically found in Norwegian industrial plants. It protects downstream equipment from lightning-induced and switching surges on the L-PE path."},{"question":"What is the closest alternative to the A9L20221?","answer":"Within the Acti9 iPRD range, the A9L20221 is the specific 2P variant for IT systems at 460 V Uc. No pin-compatible direct alternative is listed; any substitution would require a different pole count, voltage rating, or earthing-system compatibility."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9L20221","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/A9L20221 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}}