{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9KR12440BQ","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9KR12440BQ","canonicalUrl":"https://aoctrl.com/schneider/A9KR12440BQ","factsUrl":"https://aoctrl.com/api/mcp/products/A9KR12440BQ","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 ID K range, A9KR12440BQ, 4P residual current circuit breaker (RCCB), 40 A rated current, 100 mA earth-leakage sensitivity, Type AC, instantaneous, 380-415 V AC.","salesMarkdown":"It carries a 40 A rated current and 100 mA earth-leakage sensitivity, Type AC, with instantaneous trip — no intentional delay, so it clears ground faults as fast as the waveform lets it. That 100 mA sensitivity is typical for general-purpose protection where you want to catch leakage through degraded insulation without nuisance-tripping on normal cable capacitance. The 40 A continuous rating matches a typical submain or group feeder. The 100 mA sensitivity sits between the 30 mA used for personal shock protection and the 300 mA used for fire prevention — it's the middle ground for protecting equipment and reducing unwanted trips on circuits with some natural leakage. The instantaneous time delay means it trips within the waveform cycle — no coordination with downstream selective RCCBs unless they are time-delayed (S-type). Rated breaking and making capacity is listed as Idm 500 A and Im 500 A — sufficient for clearing a solid fault to earth on a 40 A circuit, but this is not a short-circuit interrupting device. Upstream protection (MCB or fuse) must handle the prospective fault current. The RCCB is voltage-independent for its tripping mechanism, meaning it detects leakage and trips even if the phase voltage collapses — a useful trait for fault conditions where the supply is compromised. Clip-on mounting onto a DIN rail, 72 mm wide (4 module pitches at 18 mm each). Terminals accept Biconnect top or bottom: 1-35 mm² rigid or 1-25 mm² flexible. Wire stripping length is 14 mm, tightening torque 3.5 N.m. IP20 on the body, IP40 inside the modular enclosure — fine for a clean indoor distribution board, not for washdown areas. Pollution degree 2 (non-condensing, typical for controlled environments).","metaTitle":"Schneider Acti9 A9KR12440BQ RCCB, 40A 100mA 4P Type AC","metaDescription":"Schneider Electric Acti9 ID K A9KR12440BQ residual current circuit breaker (RCCB). 40A rated current, 100mA sensitivity, 4 poles, Type AC, instantaneous. DIN rail mount. Quoted to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"68 mm","Range":"Acti9","Width":"72 mm","Colour":"White","Height":"81 mm","Standards":"IS 12640-1 EN/IEC 61008-1 EN/IEC 61008-2-1","9 Mm Pitches":"8","Control type":"Toggle","Network type":"AC","Product name":"Acti9 ID K","Mounting mode":"Clip-on","Tropicalisation":"2 conforming to IEC 60068-1","lifecycle_stage":"current","Mounting support":"DIN rail","Neutral position":"Left","Pollution degree":"2","Quantity per set":"Set of 3","Device short name":"ID K","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":"40 A","Electrical durability":"AC-1: 4000 cycles","Mechanical durability":"5000 cycles","Wire stripping length":"14 mm for top or bottom connection","Connections - terminals":"Biconnect top or bottom 1...35 mm² rigid Biconnect top or bottom 1...25 mm² flexible","IP degree of protection":"IP20 conforming to IEC 60529 IP40 (modular enclosure) conforming to IEC 60529","Device location in system":"Group incomer","Earth-leakage sensitivity":"100 mA","Product or component type":"Residual current circuit breaker (RCCB)","Contact position indicator":"No","Electromagnetic compatibility":"8/20 µs impulse withstand, 200 A conforming to EN/IEC 61008-1","[Ui] rated insulation voltage":"440 V AC 50 Hz","Earth-leakage protection class":"Type AC","[Ue] rated operational voltage":"380...415 V AC 50 Hz","Rated breaking and making capacity":"Idm 500 A Im 500 A","Ambient air temperature for storage":"-25...85 °C","Earth-leakage protection time delay":"Instantaneous","Residual current tripping technology":"Voltage independent","Ambient air temperature for operation":"-5...55 °C","[Uimp] rated impulse withstand voltage":"4 kV","Rated conditional short-circuit current":"GL63: Inc 4.5 kA K60: Inc 6 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/in/en/product/A9KR12440BQ/acti-9-id-k-rccb-4p-40a-100ma-type-ac-set-of-3/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9KR12440BQ/alternatives.json"},"ai":{"faq":[{"question":"What is the rated current and earth leakage sensitivity of A9KR12440BQ?","answer":"The rated current is 40 A and the earth-leakage sensitivity is 100 mA, Type AC, instantaneous."},{"question":"What standards does the A9KR12440BQ comply with?","answer":"It complies with IS 12640-1, EN/IEC 61008-1, and EN/IEC 61008-2-1 for residual current circuit breakers."},{"question":"Where can I buy A9KR12440BQ and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9KR12440BQ","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/A9KR12440BQ 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}}