{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9L08321","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9L08321","canonicalUrl":"https://aoctrl.com/schneider/A9L08321","factsUrl":"https://aoctrl.com/api/mcp/products/A9L08321","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 iPRD8r surge arrester, 3-pole, 400 V AC, Type 2+3 MOV, IT earthing system, remote signaling contact, clip-on DIN rail, 54 x 69 x 85 mm, white (RAL 9003).","salesMarkdown":"The Schneider A9L08321 iPRD8r is a three-pole Type 2+3 surge arrester built on MOV technology, designed for IT earthing systems at 400 V AC ±10 %. It handles common-mode transients up to 8 kA maximum discharge current and 2.5 kA nominal. Use it downstream of a main SPD in distribution panels where the neutral-to-ground impedance is high (IT systems) and where you want a second-level clamp plus a very low let-through voltage for sensitive loads. Type 2+3 means it serves both as the secondary surge protection (Type 2 at the sub-distribution) and as the equipment-level fine protection (Type 3 right at the load), so you can omit a separate third-stage SPD in many cases. The Up protection level <1.8 kV common mode (L/PE) stays well inside typical equipment withstand margins for devices rated 2.5 kV. The temporary overvoltage (TOV) withstand is 337 V for 5 seconds line-to-neutral—useful in IT systems where a ground fault can shift the neutral potential. Phase-to-ground TOV withstand at 1455 V for 200 ms is a safe failure mode (the MOV goes to short-circuit, not flame). Coordination: the iPRD8r expects an upstream overcurrent device. Schneider recommends a 10 A curve C iC60L or a gG 25 A fuse. ## Panel wiring and mounting Clip-on DIN rail mounting, 6 modules wide. Terminals accept 2.5–25 mm² rigid or 4–16 mm² flexible with ferrule. Tightening torque 3.5 N·m. The tunnel terminals accept wiring from top or bottom, which simplifies busbar layout in a crowded panel. Relative humidity 5–95 % non-condensing. The remote signaling contacts are rated 0.25 A / 250 V AC, enough for driving an input on most PLCs.","metaTitle":"Schneider A9L08321 Acti9 iPRD8r Surge Arrester, Type 2+3, 3P","metaDescription":"Schneider A9L08321 iPRD8r surge arrester, Type 2+3 MOV, 3P 400V, IT earthing, remote signaling, DIN rail. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Unclassified"],"specifications":{"Depth":"69 mm","Width":"54 mm","Colour":"White (RAL 9003)","Height":"85 mm","Standards":"EN 61643-11:2012 IEC 61643-11:2011","9 Mm Pitches":"6","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":"All","Device short name":"iPRD8r","Poles description":"3P","Relative humidity":"5...95 %","Remote signalling":"With","Tightening torque":"3.5 N.m","Compatibility code":"IPRD8r","Device application":"Distribution","Operating altitude":"2000 m","Surge arrester type":"Electrical distribution network","Connections - terminals":"Tunnel type terminal (top or bottom) 2.5...25 mm² rigid Tunnel type terminal (top or bottom) 4...16 mm² flexible Tunnel type terminal (top or bottom) 4...16 mm² flexible with ferrule","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 25 A - Icu 15 kA Associated fuse gG 80 A - Icu 50 kA","Maximum discharge current":"Common mode: 8 kA L/PE","Nominal discharge current":"Common mode: 2.5 kA (L/PE)","Product or component type":"Surge arrester with pluggable cartridge","Surge arrester class type":"Type 2 + 3","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 1455 V L/PE 200 ms safe failure mode 1455 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":"400 V AC (+/- 10 %) at 50/60 Hz","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-25...60 °C","Maximum [Up] voltage protection level":"Common mode Common mode <1.8 kV type 3 L/PE","[Uc] maximum continuous operating voltage":"Common mode: 460 V L/PE"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$154.94","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c55aeaf63cd5f6812d5916053aadaf8c.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/A9L08321/alternatives.json"},"ai":{"faq":[{"question":"What is the physical size of the A9L08321?","answer":"Width 54 mm, depth 69 mm, height 85 mm. It occupies 6 module pitches on a DIN rail."},{"question":"What standards does this surge arrester comply with?","answer":"It complies with EN 61643-11:2012 and IEC 61643-11:2011."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9L08321","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/A9L08321 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}