{"product_id":"live-electrical-cn140b-1p-n-40a-b-curve-6ka-mcb","title":"LIVE Electrical CN140B 1P+N 40A B Curve 6kA MCB","description":"\n\u003ch4\u003eLIVE Electrical CN140B 40A Type B 6kA 1P+N Miniature Circuit Breaker (MCB)\u003c\/h4\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eLIVE Electrical CN140B 40A Type B Miniature Circuit Breaker (MCB)\u003c\/strong\u003e provides reliable overload and short-circuit protection for domestic and commercial electrical installations. Featuring a 1P+N configuration, 6kA breaking capacity and compact single-module design, this circuit breaker is specifically designed for use with LIVE Electrical SRN Dual Busbar consumer units.\u003c\/p\u003e\n\n\u003cp\u003eWith a 40A rated current and Type B tripping characteristic, the CN140B is suitable for appropriately designed electrical circuits with low inrush currents. Its space-saving construction enables efficient installation within compatible distribution boards, making it a practical solution for electricians and electrical contractors requiring dependable circuit protection.\u003c\/p\u003e\n\n\u003ch5\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e40A Rated Current:\u003c\/strong\u003e Provides overload protection for electrical circuits designed for a 40A protective device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType B Tripping Curve:\u003c\/strong\u003e Suitable for electrical circuits with low inrush currents and appropriate load characteristics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6kA Breaking Capacity:\u003c\/strong\u003e Designed to interrupt short-circuit fault currents up to its rated breaking capacity of 6000A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1P+N Configuration:\u003c\/strong\u003e Combines single-pole overcurrent protection with neutral switching in a compact device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-Module Design:\u003c\/strong\u003e Space-efficient construction helps maximise available capacity within compatible consumer units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e240V AC Rated Voltage:\u003c\/strong\u003e Designed for suitably rated single-phase electrical installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSRN Dual Busbar Compatibility:\u003c\/strong\u003e Specifically designed for LIVE Electrical SRN Dual Busbar distribution boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP20 Protection:\u003c\/strong\u003e Provides protection against finger access to hazardous parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10mm² Terminal Capacity:\u003c\/strong\u003e Accommodates conductors up to the specified maximum terminal capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature Range:\u003c\/strong\u003e Designed for operation in ambient temperatures from -25°C to +40°C.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch5\u003eTechnical Specifications\u003c\/h5\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eLIVE Electrical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProduct Code\u003c\/th\u003e\n\u003ctd\u003eCN140B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eMiniature Circuit Breaker (MCB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePole Configuration\u003c\/th\u003e\n\u003ctd\u003e1P+N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRated Current\u003c\/th\u003e\n\u003ctd\u003e40A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRated Voltage\u003c\/th\u003e\n\u003ctd\u003e240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTripping Characteristic\u003c\/th\u003e\n\u003ctd\u003eType B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRated Frequency\u003c\/th\u003e\n\u003ctd\u003e50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eNumber of Modules\u003c\/th\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eShort-Circuit Breaking Capacity\u003c\/th\u003e\n\u003ctd\u003e6kA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMechanical Life\u003c\/th\u003e\n\u003ctd\u003e4,000 Cycles (as supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDegree of Protection\u003c\/th\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum Terminal Capacity\u003c\/th\u003e\n\u003ctd\u003e10mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTerminal Tightening Torque\u003c\/th\u003e\n\u003ctd\u003e1.2Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003e-25°C to +40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCompatible Distribution Boards\u003c\/th\u003e\n\u003ctd\u003eLIVE Electrical SRN Dual Busbar Boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch5\u003eApplications\u003c\/h5\u003e\n\u003cp\u003eThe LIVE Electrical CN140B 40A MCB is suitable for appropriately designed domestic and commercial electrical installations requiring Type B overcurrent protection. Potential applications include suitably rated radial circuits, fixed electrical equipment and other circuits with low inrush current characteristics. It is designed for installation within compatible LIVE Electrical SRN Dual Busbar consumer units.\u003c\/p\u003e\n\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0553\/2349\/2557\/files\/MCB_-_CN_Range_Datasheet.pdf?v=1791976408\" title=\"LIVE Electrical CN140B MCB Technical Data Sheet\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload LIVE Electrical CN Range MCB Data Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/liveelectrical.co.uk\/storage\/Files\/20251203104616_0-Live-Product-Catalogue-2026-Final.pdf\" title=\"LIVE Electrical Product Catalogue 2026\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload LIVE Electrical Product Catalogue 2026\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LIVE Electrical","offers":[{"title":"Default Title","offer_id":67677366616455,"sku":"CN140B","price":7.19,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/2349\/2557\/files\/CN140B-2.jpg?v=1791980630","url":"https:\/\/westbasedirect.com\/products\/live-electrical-cn140b-1p-n-40a-b-curve-6ka-mcb","provider":"westbasedirect.com","version":"1.0","type":"link"}