{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9C21843","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9C21843","canonicalUrl":"https://aoctrl.com/schneider/A9C21843","factsUrl":"https://aoctrl.com/api/mcp/products/A9C21843","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 iCT contactor, A9C21843, 3P, 40 A AC-7A, 400 V AC, 220-240 V AC 50 Hz coil, clip-on 35 mm DIN rail, IP20.","salesMarkdown":"It clips onto a 35 mm symmetrical DIN rail and is rated for 40 A in AC-7A duty (general-use inductive loads) and 15 A in AC-7B duty (motor loads) at 400 V AC, 50 Hz. The coil is 220-240 V AC, maintained control signal type. The 40 A AC-7A rating covers resistive and lightly inductive loads like heating banks or lighting circuits. The 15 A AC-7B rating is the one to check for motor switching — it reflects the higher inrush and inductive break duty typical of small pumps, fans, or compressors. Electrical durability is specified per duty cycle: 100,000 cycles at 40 A AC-7A, 30,000 cycles at 15 A AC-7B, and 30,000 cycles under AC-3 (cage motor starting). Mechanical durability is 1,000,000 cycles, so the contactor outlasts its electrical life in most applications. The contactor is tropicalised (2 levels conforming to EN 60947-4-1 and EN 61095), meaning it withstands 95% relative humidity at 55 °C without performance degradation — relevant for panels in coastal or unconditioned spaces. The 54 mm width (9 mm pitches × 6) fits standard modular enclosure spacing. Power circuit terminals accept 6-25 mm² rigid or 6-16 mm² flexible cable; control circuit terminals accept 1.5-2.5 mm². The action indicator provides local signalling of contactor state.","metaTitle":"Schneider Electric A9C21843 Acti9 iCT Contactor, 3P, 40 A AC","metaDescription":"Schneider Electric A9C21843 Acti9 iCT contactor, 3P, 40 A AC-7A, 400 V AC, 220-240 V AC coil, clip-on DIN rail mount, IP20. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"60 mm","Poles":"3P","Width":"54 mm","title":"A9C21843","Colour":"White","Height":"85 mm","Standards":"IEC/EN 61095","Noise level":"30 dB","description":"iCT 40A 3NO 220...240V 50Hz MO contact","9 Mm Pitches":"6","Control type":"Remote and manual control","Network type":"AC","Product name":"Acti9 iCT","Maximum power":"2.1 W at 400 V AC","Mounting mode":"Clip-on","Market segment":"Small commercial Residential","Tropicalisation":"2 conforming to EN 60947-4-1 2 conforming to EN 61095 2 conforming to IEC 1095","lifecycle_stage":"current","Local signalling":"Action indicator","Mounting support":"35 mm symmetrical DIN rail","Pollution degree":"2","Range Of Product":"Acti9","Device short name":"iCT","Network frequency":"50 Hz","Relative humidity":"95 % at 55 °C","Tightening torque":"Control circuit: 0.8 N.m Power circuit: 3.5 N.m","Compatibility code":"ICT","Device application":"Motor-heating-lighting","Operating altitude":"2000 m","inrush power in VA":"53 VA","Control signal type":"Maintained","Switching frequency":"100 switching operations/day","Electrical durability":"100000 cycles IEC/EN 61095 40 A 50 Hz AC-7A 30000 cycles IEC/EN 61095 15 A 50 Hz AC-7B 30000 cycles IEC/EN 61095 50 Hz AC-7C 100000 cycles EN/IEC 60947-4-1 50 Hz AC-1 30000 cycles EN/IEC 60947-4-1 50 Hz AC-3 30000 cycles EN/IEC 60947-4-1 50 Hz AC-5a 30000 cycles EN/IEC 60947-4-1 50 Hz AC-5b","Mechanical durability":"1000000 cycles","Connections - terminals":"Control circuit: tunnel type terminals2 cable(s) 1.5 mm² rigid Control circuit: tunnel type terminals1 cable(s) 1.5...2.5 mm² rigid Power circuit: tunnel type terminals1 cable(s) 6...16 mm² flexible Power circuit: tunnel type terminals1 cable(s) 6...25 mm² rigid Control circuit: tunnel type terminals2 cable(s) 1.5...2.5 mm² flexible","IP degree of protection":"IP20","Pole contact composition":"3 NO","Product or component type":"Contactor","[Uc] control circuit voltage":"220...240 V AC 50 Hz","[Ui] rated insulation voltage":"500 V AC 50/60 Hz","[Ie] rated operational current":"40 A AC-7A 15 A AC-7B","[Ue] rated operational voltage":"400 V AC 50 Hz","Hold-in power consumption in VA":"6.5 VA","Ambient air temperature for storage":"-40...70 °C","Ambient air temperature for operation":"-5...60 °C","[Uimp] rated impulse withstand voltage":"4 kV"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$54.58","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/ie/en/product/A9C21843/ict-40a-3no-220-240v-50hz-mo-contact/"},"ai":{"faq":[{"question":"What are the key ratings for A9C21843?","answer":"3-pole contactor, 40 A AC-7A / 15 A AC-7B at 400 V AC, 50 Hz. Coil 220-240 V AC. Rated insulation voltage 500 V AC. Electrical durability 100,000 cycles at 40 A AC-7A, 30,000 cycles at 15 A AC-7B."},{"question":"What is the mounting and wiring requirement?","answer":"Clip-on to 35 mm symmetrical DIN rail. Power terminals accept 6-25 mm² rigid or 6-16 mm² flexible cable; control terminals accept 1.5-2.5 mm². Tightening torque 3.5 N·m (power) and 0.8 N·m (control)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9C21843","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/A9C21843 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}