{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MGN61878","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"MGN61878","canonicalUrl":"https://aoctrl.com/schneider/MGN61878","factsUrl":"https://aoctrl.com/api/mcp/products/MGN61878","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Multi9 C60H-DC, miniature circuit-breaker, 2P, 4 A, K curve, 20 kA Icu at 250 V DC, clip-on DIN rail mount, grey.","salesMarkdown":"## DC circuit protection with K-curve selectivity The Schneider Electric MGN61878 is a Multi9 C60H-DC miniature circuit-breaker rated 4 A at 50 °C, with a K-curve magnetic trip at 12 x In ±20 % DC. It is a 2-pole DC-only breaker, with breaking capacity 20 kA Icu at 250 V DC per EN/IEC 60947-2. ## Installation and wiring notes Mounts via clip-on to DIN rail. Tunnel-type terminals accept 1…25 mm² rigid stranded (AWG 18…4) or 1…16 mm² flexible; strip 14 mm and torque to 2.5 N.m. The breaker is padlockable and provides ON/OFF indication via the toggle. IP20 on the terminals, IP40 on the modular enclosure — suitable for enclosed panel installation, not for washdown zones. ## DC coordination and isolation Rated insulation voltage 500 V DC; operational voltages include 250 V DC and 500 V DC. Thermal-magnetic trip technology with 3000 electrical cycles at L/R = 2 ms and 20000 mechanical cycles. No earth-leakage protection integrated — pair with an RCD if needed.","metaTitle":"MGN61878 Multi9 C60H-DC DC MCB, 4 A, K Curve, 2P, 20 kA","metaDescription":"MGN61878 is a Schneider Electric Multi9 C60H-DC miniature circuit-breaker, 4 A, K curve, 2-pole DC, 20 kA breaking capacity at 250 V DC. Active production, sourced to order. EN/IEC","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":"K","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":"2.5 N.m top or bottom","Device application":"Distribution","[In] rated current":"4 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...25 mm² (AWG 18...AWG 4) - rigid stranded Tunnel type terminal (top or bottom)1...16 mm² (AWG 18...AWG 6) - flexible Tunnel type terminal (top or bottom)1...16 mm² (AWG 18...AWG 6) - flexible with ferrule Tunnel type terminal (top or bottom) - 2 cable(s) 1...10 mm² (AWG 18...AWG 8) - rigid stranded Tunnel type terminal (top or bottom) - 2 cable(s) 1...10 mm² (AWG 18...AWG 8) - flexible Tunnel type terminal (top or bottom) - 2 cable(s) 1...10 mm² (AWG 18...AWG 8) - flexible with ferrule Tunnel type terminal (top or bottom) - 3 cable(s) 1 mm² (AWG 18) - flexible stranded","IP degree of protection":"IP20 conforming to IEC 60529 IP40 (modular enclosure) conforming to IEC 60529","Magnetic tripping limit":"12 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/6cddd3df6d54900766945604711f104a.pdf","sourceUrl":"https://www.se.com/be/en/product/MGN61878/multi9-c60hdc-mcb-2p-4-a-k-curve-500-v-6-ka/","alternativesUrl":"https://aoctrl.com/api/mcp/products/MGN61878/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/MGN61878","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/MGN61878 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}}