{"id":2145,"date":"2026-02-26T07:25:27","date_gmt":"2026-02-26T07:25:27","guid":{"rendered":"https:\/\/www.upspower-supply.com\/?post_type=product&#038;p=2145"},"modified":"2026-03-31T09:09:45","modified_gmt":"2026-03-31T09:09:45","slug":"nobreak-40kva-best-ups-power-supply","status":"publish","type":"product","link":"https:\/\/www.upspower-supply.com\/uk\/product\/nobreak-40kva-best-ups-power-supply\/","title":{"rendered":"Nobreak 40kva Three Phase Online Nobreak UPS System"},"content":{"rendered":"<p>The NB33-H 40kVA Online Double-Conversion UPS is a high-performance power protection solution engineered with advanced high-frequency technology and modern design principles. Specifically designed for critical reliability, this &#8220;nobreak&#8221; system provides stable and consistent power for sensitive equipment across various industries.<\/p>\n<h2>Key Features &amp; Advantages of the 40kva nobreak:<\/h2>\n<ul>\n<li><strong>Advanced Reliability:<\/strong> Utilizes True Double-Conversion technology and DSP (Digital Signal Processing) to guarantee high-performance output.<\/li>\n<li><strong>Flexible Design:<\/strong> The 10-60kVA models feature a modular-ready design that supports both tower and rack-mount deployments for easier maintenance and installation.<\/li>\n<li><strong>Efficiency &amp; Economy:<\/strong> Includes an energy-saving ECO mode and Active Power Factor Correction (PFC) across all phases.<\/li>\n<li><strong>Smart Battery Management:<\/strong> Features a 3-stage charging design to optimize battery life and performance, with adjustable battery string numbers.<\/li>\n<li><strong>Industrial Compatibility:<\/strong> Generator compatible with dual AC inputs and Emergency Power Off (EPO) functionality for enhanced safety.<\/li>\n<li><strong>Scalability:<\/strong> Supports parallel operation of multiple units with shared battery banks to grow with your power needs.<\/li>\n<\/ul>\n<h3>Technical Specifications Summary<\/h3>\n<div class=\"max-w-4xl max-h-[80vh] mx-auto my-8 overflow-auto rounded-lg border border-gray-200 shadow-sm\">\n<table class=\"min-w-full text-sm text-left border-collapse border border-gray-300\">\n<thead class=\"bg-orange-100 text-orange-900 font-bold\">\n<tr>\n<th class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"2\">Model: NB33<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">10L-H<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">20L-H<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">30L-H<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">40L-H<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">60L-H<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">80L-H<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">100L-H<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">120L-H<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">160L-H<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">180L-H<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center\">200L-H<\/th>\n<\/tr>\n<tr>\n<th class=\"border border-gray-300 px-4 py-2 bg-gray-100 text-gray-800\" colspan=\"2\">Parallel Capability<\/th>\n<th class=\"border border-gray-300 px-2 py-2 text-center font-normal bg-white\" colspan=\"11\">Up to 4 units<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr class=\"bg-gray-200 font-bold\">\n<td class=\"px-4 py-1 border border-gray-300\" colspan=\"13\">INPUT<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Wiring System<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"2\">3-Phase + Neutral + PE<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"9\">3-Phase + Neutral + PE<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Rated Voltage<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">3 x 380\/400\/415 VAC (3-Phase + Neutral + PE)<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Voltage Range<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">110-300 VAC @ 50% load; 176-276 VAC @ 100% load<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Frequency Range<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">40 ~ 70Hz<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Power Factor<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">0.99 at 100% load<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Harmonic Distortion (THDi)<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">Linear Load &lt; 4%<\/td>\n<\/tr>\n<tr class=\"bg-gray-200 font-bold\">\n<td class=\"px-4 py-1 border border-gray-300\" colspan=\"13\">OUTPUT<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Output Voltage<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">3 x 380\/400\/415 VAC (3-Phase + Neutral)<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Voltage Precision (Battery Mode)<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">\u00b11%<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" rowspan=\"2\">Freq. Range<\/td>\n<td class=\"border border-gray-300 px-4 py-2\">Sync Range<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">46-54Hz or 56-64Hz<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2\">Battery Mode<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">50\/60Hz \u00b10.1%<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Crest Factor<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">3:1 (Maximum)<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Harmonic Distortion (THDv)<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">\u2264 2% THD (Linear Load); \u2264 5% THD (Non-linear Load)<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" rowspan=\"2\">Transfer Time<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-sm\">Mains to Battery<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">0 ms<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 text-sm\">Inverter to Bypass<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">0 ms<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Waveform<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">Pure Sine Wave<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Output Power Factor<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"2\">0.9<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"9\">1.0<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Overload Capacity<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">100-110%: 60min | 111-125%: 10min | 126-150%: 1min | &gt;150%: 400ms<\/td>\n<\/tr>\n<tr class=\"bg-gray-200 font-bold\">\n<td class=\"px-4 py-1 border border-gray-300\" colspan=\"13\">EFFICIENCY<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Online Mode<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">95.5%<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">ECO Mode<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">98.5%<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Battery Mode<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">94.5%<\/td>\n<\/tr>\n<tr class=\"bg-gray-200 font-bold\">\n<td class=\"px-4 py-1 border border-gray-300\" colspan=\"13\">PHYSICAL<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Dimensions (DxWxH) mm<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center text-xs\" colspan=\"2\">592 x 250 x 576<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center text-xs\" colspan=\"3\">815 x 300 x 1000<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center text-xs\" colspan=\"2\">796 x 360 x 1010<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center text-xs\" colspan=\"2\">1000 x 430 x 1200<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center text-xs\" colspan=\"2\">1000 x 600 x 1200<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Weight (kg)<\/td>\n<td class=\"border border-gray-300 px-2 py-2 text-center\">38<\/td>\n<td class=\"border border-gray-300 px-2 py-2 text-center\">40<\/td>\n<td class=\"border border-gray-300 px-2 py-2 text-center\">64<\/td>\n<td class=\"border border-gray-300 px-2 py-2 text-center\">68<\/td>\n<td class=\"border border-gray-300 px-2 py-2 text-center\">108<\/td>\n<td class=\"border border-gray-300 px-2 py-2 text-center\">124<\/td>\n<td class=\"border border-gray-300 px-2 py-2 text-center\" colspan=\"2\">200<\/td>\n<td class=\"border border-gray-300 px-2 py-2 text-center\">265<\/td>\n<td class=\"border border-gray-300 px-2 py-2 text-center\">265<\/td>\n<td class=\"border border-gray-300 px-2 py-2 text-center\">265<\/td>\n<\/tr>\n<\/tbody>\n<tfoot>\n<tr class=\"bg-gray-100 italic\">\n<td class=\"border border-gray-300 px-4 py-2 font-medium\" colspan=\"2\">Communication<\/td>\n<td class=\"border border-gray-300 px-4 py-2 text-center\" colspan=\"11\">Smart RS-232\/USB, SNMP Card Optional<\/td>\n<\/tr>\n<\/tfoot>\n<\/table>\n<\/div>\n<h2>40kVA Nobreak vs Other Nobreak Capacity<\/h2>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"8\">\n<thead>\n<tr>\n<th>Nobreak Capacity<\/th>\n<th>Typical Application<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>10kVA Nobreak<\/td>\n<td>Small server rooms<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.upspower-supply.com\/uk\/product\/nobreak-20kva-ups-systems-manufacturer\/\">nobreak 20kva<\/a><\/td>\n<td>Medium offices<\/td>\n<\/tr>\n<tr>\n<td>40kVA Nobreak<\/td>\n<td>Data centers \/ factories<\/td>\n<\/tr>\n<tr>\n<td>100kVA Nobreak<\/td>\n<td>Large industrial systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p>The NB33-H series Nobreak 40kva offers advanced double-conversion technology and DSP control for mission-critical loads. This versatile 40kVA system features a hybrid tower\/rack design (10-60kVA range), ensuring high efficiency and reliable power security for telecommunications, medical, and industrial applications.<\/p>\n<p><a href=\"https:\/\/www.upspower-supply.com\/uk\/nobreak\/\">nobreaks<\/a><\/p>","protected":false},"featured_media":2146,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[26],"product_tag":[46],"class_list":["post-2145","product","type-product","status-publish","has-post-thumbnail","product_cat-online-ups","product_tag-double-conversion-ups","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nobreak 40kva Three Phase Online Nobreak UPS System<\/title>\n<meta name=\"description\" content=\"Nobreak 40kVA three phase online UPS system with pure sine wave output, high efficiency and reliable power protection for data centers, hospitals and industrial applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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