{"product_id":"siemens-lme21-330c2-controller","title":"SIEMENS LME21.330C2 Burner Control 230VAC 3s Safety Time","description":"\u003cstyle\u003e.nxs-industrial-product-page{--industrial-navy:#082f49;--industrial-blue:#0b4f7c;--industrial-blue-2:#0f6ea8;--industrial-blue-3:#1784c1;--industrial-cyan:#38bdf8;--steel-blue:#dcebf5;--steel-blue-2:#edf6fb;--steel-line:#c9dce9;--surface:#ffffff;--surface-soft:#f7fbfe;--text-main:#173042;--text-muted:#5e7382;--shadow-soft:0 10px 30px rgba(8,47,73,0.08);--shadow-hover:0 16px 36px rgba(8,79,124,0.15);--radius-lg:14px;--radius-md:10px;}.nxs-industrial-product-page,.nxs-industrial-product-page *{margin:0;padding:0;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;}.nxs-industrial-product-page{background-color:#f3f8fb;background-image:linear-gradient(180deg,#eef6fb 0,#f7fafc 320px,#eef3f7 100%),linear-gradient(rgba(15,110,168,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(15,110,168,0.025) 1px,transparent 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*,.nxs-industrial-product-page *::before,.nxs-industrial-product-page *::after{transition:none !important;}}\u003c\/style\u003e\u003cdiv class=\"nxs-industrial-product-page\"\u003e\u003cdiv class=\"container\"\u003e\u003cmain\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSIEMENS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eLME21.330C2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eBurner Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eLME21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eSingle- or Two-Stage Gas Burners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e230 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMains Frequency\u003c\/td\u003e\n\u003ctd\u003e50-60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Time\u003c\/td\u003e\n\u003ctd\u003e3 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrepurge Time\u003c\/td\u003e\n\u003ctd\u003e30 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlame Supervision\u003c\/td\u003e\n\u003ctd\u003eIonization Probe or QRA Flame Detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDegree of Protection\u003c\/td\u003e\n\u003ctd\u003eIP40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"features\"\u003e\n\u003carticle class=\"card\"\u003e\u003ch3\u003eBurner Sequence Control\u003c\/h3\u003e\n\u003cp\u003eThe LME21.330C2 is designed to control and supervise the startup and operation sequence of suitable gas burner systems.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e230 VAC Supply\u003c\/h3\u003e\n\u003cp\u003eThe burner control operates with a 230 VAC mains supply at 50 to 60 Hz.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e3-Second Safety Time\u003c\/h3\u003e\n\u003cp\u003eThe LME21.330C2 configuration has a documented safety time of 3 seconds for burner startup supervision.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e30-Second Prepurge\u003c\/h3\u003e\n\u003cp\u003eThe specified startup sequence includes a 30-second prepurge period before the ignition and flame-establishment stages.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eFlame Supervision\u003c\/h3\u003e\n\u003cp\u003eThe LME21 series supports flame monitoring using an ionization probe or an applicable QRA flame detector depending on burner configuration.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eGas Burner Applications\u003c\/h3\u003e\n\u003cp\u003eThe controller is intended for suitable single-stage or two-stage gas burner control and monitoring applications.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSingle-stage gas burners\u003c\/li\u003e\n\u003cli\u003eTwo-stage gas burners\u003c\/li\u003e\n\u003cli\u003eIndustrial burner systems\u003c\/li\u003e\n\u003cli\u003eGas-fired heating equipment\u003c\/li\u003e\n\u003cli\u003eBoiler burner control\u003c\/li\u003e\n\u003cli\u003eProcess heating equipment\u003c\/li\u003e\n\u003cli\u003eCombustion control systems\u003c\/li\u003e\n\u003cli\u003eBurner maintenance applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003ePurchase Information\u003c\/h2\u003e\n\u003cp\u003eWe support online purchase of the SIEMENS LME21.330C2 Burner Control. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is SIEMENS LME21.330C2?\u003c\/strong\u003e\u003cbr\u003eIt is an LME21 series burner control designed for startup sequencing, control and flame supervision of suitable gas burner systems.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the rated voltage of LME21.330C2?\u003c\/strong\u003e\u003cbr\u003eThe rated supply voltage is 230 VAC.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat mains frequency does LME21.330C2 support?\u003c\/strong\u003e\u003cbr\u003eThe specified mains frequency is 50 to 60 Hz.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the safety time of LME21.330C2?\u003c\/strong\u003e\u003cbr\u003eThe documented safety time is 3 seconds.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the prepurge time?\u003c\/strong\u003e\u003cbr\u003eThe LME21.330C2 configuration has a documented prepurge time of 30 seconds.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat type of burners can LME21.330C2 control?\u003c\/strong\u003e\u003cbr\u003eIt is intended for suitable single-stage or two-stage gas burner applications.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eHow does LME21.330C2 supervise the flame?\u003c\/strong\u003e\u003cbr\u003eFlame supervision can be performed using an ionization probe or an applicable QRA flame detector depending on the burner configuration.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat is the degree of protection?\u003c\/strong\u003e\u003cbr\u003eThe burner control has a documented degree of protection of IP40.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eCan LME21.330C2 be considered for an existing burner?\u003c\/strong\u003e\u003cbr\u003eIt can be considered after the complete model, supply voltage, burner type, startup sequence, safety time, flame detector and wiring configuration have been checked.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eAre different LME21 variants interchangeable?\u003c\/strong\u003e\u003cbr\u003eDifferent LME21 variants can have different timing and application characteristics, so the complete LME21.330C2 designation should be checked before selection.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eWhat should be checked before ordering LME21.330C2?\u003c\/strong\u003e\u003cbr\u003eCheck the complete model designation, 230 VAC supply, burner operating sequence, 3-second safety time, 30-second prepurge time, flame supervision method, wiring and system requirements before ordering.\u003c\/p\u003e\u003c\/section\u003e\u003c\/main\u003e\u003c\/div\u003e\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":46519233871951,"sku":"GJL-SIEMENS-LME21.330C2","price":27.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/7569\/2623\/files\/LME21.330C2-_01.jpg?v=1787909389","url":"https:\/\/yunshuotrade.com\/products\/siemens-lme21-330c2-controller","provider":"yunshuotrade","version":"1.0","type":"link"}