{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MGN61821","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"MGN61821","canonicalUrl":"https://aoctrl.com/schneider/MGN61821","factsUrl":"https://aoctrl.com/api/mcp/products/MGN61821","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Multi9 C60H-DC miniature circuit breaker, MGN61821, 2-pole, 40 A, B curve, DC rated, clip-on DIN rail mount.","salesMarkdown":"The Schneider Electric MGN61821 is a Multi9 C60H-DC miniature circuit breaker, a 2-pole DC-rated thermal-magnetic breaker built for distribution panels that need reliable overcurrent and short-circuit protection on DC circuits. Rated 40 A at 50 °C per EN/IEC 60947-2, it breaks up to 20 kA Icu at 250 V DC — meaning it clears high-fault DC arcs cleanly, which is the main thing a DC breaker has to do that an AC breaker can't. The B curve (magnetic trip at 3.5 to 5.5 x In) is the standard for resistive and general-purpose DC loads — think control transformers, lighting, or heater circuits — where inrush is low and you want fast trip on a hard short. The breaking capacity steps down with voltage: 20 kA at 220/250 V DC, 10 kA at 440 V DC, 6 kA at 500 V DC — the higher the bus voltage, the lower the fault current it can interrupt, so match the Icu to your available fault current at the panel.","metaTitle":"MGN61821 Multi9 C60H-DC MCB, 40 A, 2-Pole DC, B Curve","metaDescription":"Schneider Electric MGN61821 miniature circuit breaker, 40 A rated, 2-pole DC, B curve, 20 kA breaking at 250 V DC. Clip-on DIN rail. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"73 mm","Range":"Multi9","Width":"36 mm","Colour":"Grey","Height":"81 mm","Standards":"EN/IEC 60947-2","Curve code":"B","9 Mm Pitches":"4","Control type":"Toggle","Network type":"DC","Product name":"Multi9 C60H-DC","Mounting mode":"Clip-on","Tropicalisation":"2 conforming to IEC 60068-2","lifecycle_stage":"current","Local signalling":"ON/OFF indication","Mounting support":"DIN rail","Pollution degree":"3 conforming to EN 60947-2","Breaking capacity":"20 kA Icu at 220 V DC conforming to EN/IEC 60947-2 20 kA Icu at 250 V DC conforming to EN/IEC 60947-2 10 kA Icu at 440 V DC conforming to EN/IEC 60947-2 6 kA Icu at 500 V DC conforming to EN/IEC 60947-2","Device short name":"C60H-DC","Poles description":"2P","Relative humidity":"95 % at 55 °C","Tightening torque":"3.5 N.m top or bottom","Device application":"Distribution","[In] rated current":"40 A at 50 °C conforming to EN/IEC 60947-2","Trip unit technology":"Thermal-magnetic","Utilisation category":"Category A conforming to EN/IEC 60947-2","Electrical durability":"3000 cycles L/R = 2 ms","Mechanical durability":"20000 cycles","Wire stripping length":"14 mm for top or bottom connection","Connections - terminals":"Tunnel type terminal (top or bottom)1...35 mm² (AWG 18...AWG 2) - rigid stranded Tunnel type terminal (top or bottom)1...25 mm² (AWG 18...AWG 4) - flexible Tunnel type terminal (top or bottom)1...25 mm² (AWG 18...AWG 4) - flexible with ferrule Tunnel type terminal (top or bottom) - 2 cable(s) 1...16 mm² (AWG 18...AWG 6) - rigid stranded Tunnel type terminal (top or bottom) - 2 cable(s) 1...16 mm² (AWG 18...AWG 6) - flexible Tunnel type terminal (top or bottom) - 2 cable(s) 1...16 mm² (AWG 18...AWG 6) - flexible with ferrule Tunnel type terminal (top or bottom) - 3 cable(s) 4 mm² (AWG 6) - flexible stranded","IP degree of protection":"IP20 conforming to IEC 60529 IP40 (modular enclosure) conforming to IEC 60529","Magnetic tripping limit":"5.5 x In +/- 20 % DC","Earth-leakage protection":"Without","Provision for padlocking":"Padlockable","Number of protected poles":"2","Product or component type":"Miniature circuit-breaker","Suitability for isolation":"Yes conforming to EN/IEC 60947-2","Contact position indicator":"Yes","[Ui] rated insulation voltage":"500 V DC conforming to EN/IEC 60947-2","[Ue] rated operational voltage":"250 V DC 500 V DC 220 V DC 440 V DC","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-25...70 °C","[Ics] rated service breaking capacity":"15 kA 75 % conforming to EN/IEC 60947-2 - 220 V DC 15 kA 75 % conforming to EN/IEC 60947-2 - 250 V DC 7.5 kA 75 % conforming to EN/IEC 60947-2 - 440 V DC 4.5 kA 75 % conforming to EN/IEC 60947-2 - 500 V","[Uimp] rated impulse withstand voltage":"6 kV conforming to EN/IEC 60947-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/905e683ee5418836ab5fed44d309367c.pdf","sourceUrl":"https://www.se.com/vn/en/product/MGN61821/multi9-c60hdc-mcb-2p-40-a-b-curve-500-v-6-ka/","alternativesUrl":"https://aoctrl.com/api/mcp/products/MGN61821/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does MGN61821 carry?","answer":"MGN61821 is certified to EN/IEC 60947-2, carries IP20/IP40 protection ratings per IEC 60529, and is tropicalised per IEC 60068-2 (2 levels). It is suitable for isolation per the standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/MGN61821","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/MGN61821 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}}