{"id":8177,"date":"2026-10-13T10:02:06","date_gmt":"2026-10-13T10:02:06","guid":{"rendered":"https:\/\/potensilift.com\/?post_type=product&#038;p=8177"},"modified":"2026-10-13T10:02:06","modified_gmt":"2026-10-13T10:02:06","slug":"otis-elevator-inverter-gaa21305ws10-ultra-drive-403b","status":"publish","type":"product","link":"https:\/\/potensilift.com\/es\/producto\/otis-elevator-inverter-gaa21305ws10-ultra-drive-403b\/","title":{"rendered":"Otis Elevator Inverter GAA21305WS10 Ultra Drive 403B"},"content":{"rendered":"<h2 class=\"text-[1.2rem] font-bold mt-4 mb-2 text-zinc-800 dark:text-zinc-200 first:mt-0 tracking-tight\">Product Information<\/h2>\n<div class=\"my-5 relative flex-1 min-h-0 min-w-0 hover:cursor-default overflow-x-auto overflow-y-hidden phoenix-scrollbar\">\n<div>\n<table class=\"min-w-full border-collapse text-sm\">\n<thead>\n<tr>\n<th class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2 bg-zinc-50 dark:bg-zinc-800\/80 font-semibold text-left text-zinc-700 dark:text-zinc-300\">Feature<\/th>\n<th class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2 bg-zinc-50 dark:bg-zinc-800\/80 font-semibold text-left text-zinc-700 dark:text-zinc-300\">Specification<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Model Number<\/strong><\/td>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\">GAA21305WS10<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Also Written As<\/strong><\/td>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\">GDA21305WS10, Ultra Drive 403B, 110VAC DC caps external<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Brand<\/strong><\/td>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\">Otis<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Product Type<\/strong><\/td>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\">Lift Inverter (VVVF drive for the traction machine)<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Function<\/strong><\/td>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\">Controls the speed of the lift traction machine; supplied with the board GCA26800QC2<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Used On<\/strong><\/td>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\">Otis lifts fitted with the Ultra Drive 403B inverter<\/td>\n<\/tr>\n<tr>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Compatibility<\/strong><\/td>\n<td class=\"border border-zinc-200 dark:border-zinc-700 px-3 py-2\">DC caps external version; please confirm the version marking<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr class=\"my-6 border-zinc-200\/80 dark:border-zinc-700\/80\" \/>\n<h2 class=\"text-[1.2rem] font-bold mt-4 mb-2 text-zinc-800 dark:text-zinc-200 first:mt-0 tracking-tight\">Related &amp; Alternative Models<\/h2>\n<p class=\"!mt-2 !mb-2 leading-relaxed\">Other versions of the same Otis Ultra Drive 403B:<\/p>\n<ul class=\"my-2 space-y-1.5 leading-[1.85] pl-5\">\n<li class=\"leading-[1.85] pl-1\">GAA21305WS30 \u2014 DC caps internal, incl. GCA26800QC7<\/li>\n<li class=\"leading-[1.85] pl-1\"><a href=\"https:\/\/potensilift.com\/en\/product\/elevator-pcb-gaa21305ws20-for-otis\/\">GAA21305WS20<\/a> \u2014 Ultra Drive 403B version<\/li>\n<\/ul>\n<p class=\"!mt-2 !mb-2 leading-relaxed\">Other Otis Ultra Drive inverters and boards:<\/p>\n<ul class=\"my-2 space-y-1.5 leading-[1.85] pl-5\">\n<li class=\"leading-[1.85] pl-1\">GDA21305KY50 \u2014 Ultra Drive OVFR03B-401 drive<\/li>\n<li class=\"leading-[1.85] pl-1\"><a href=\"https:\/\/potensilift.com\/en\/product\/elevator-frequency-converter-ovfr03b-402-gda21305ky60-for-otis\/\">GDA21305KY60<\/a> \u2014 Ultra Drive OVFR03B-402 drive<\/li>\n<li class=\"leading-[1.85] pl-1\"><a href=\"https:\/\/potensilift.com\/en\/product\/elevator-inverter-pcb-gba21305wc70-include-gca26800ps7-for-otis\/\">GBA21305WC70<\/a> \u2014 Otis drive with GCA26800PS7<\/li>\n<li class=\"leading-[1.85] pl-1\">GCA26800QC7 \u2014 board for the DC caps internal version<\/li>\n<\/ul>\n<p class=\"!mt-2 !mb-2 leading-relaxed\">Potensi supplies the Otis inverter GAA21305WS10, the Otis Ultra Drive 403B and other Otis lift drives and boards. The models above are only a part of what we can supply. We stock and source a much wider range of related and alternative models. If your model number is not listed here, please send us the model number or a photo of the original part, and we will confirm availability and the correct match for you.<\/p>\n<hr class=\"my-6 border-zinc-200\/80 dark:border-zinc-700\/80\" \/>\n<h2 class=\"text-[1.2rem] font-bold mt-4 mb-2 text-zinc-800 dark:text-zinc-200 first:mt-0 tracking-tight\">Why Choose Potensi?<\/h2>\n<ul class=\"my-2 space-y-1.5 leading-[1.85] pl-5\">\n<li class=\"leading-[1.85] pl-1\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">99% Market Coverage:<\/strong>\u00a0We can supply nearly 99% of elevator spare parts on the market.<\/li>\n<li class=\"leading-[1.85] pl-1\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Genuine Quality Assurance:<\/strong>\u00a0We provide genuine and reliable elevator components.<\/li>\n<li class=\"leading-[1.85] pl-1\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Expert Identification Support:<\/strong>\u00a0Send us the model number or product photos, and we can help confirm the correct part.<\/li>\n<li class=\"leading-[1.85] pl-1\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Global Shipping:<\/strong>\u00a0We support fast and reliable international delivery for elevator maintenance projects.<\/li>\n<\/ul>\n<hr class=\"my-6 border-zinc-200\/80 dark:border-zinc-700\/80\" \/>\n<h2 class=\"text-[1.2rem] font-bold mt-4 mb-2 text-zinc-800 dark:text-zinc-200 first:mt-0 tracking-tight\">FAQ<\/h2>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Q1: What is the GAA21305WS10 inverter used for?<\/strong><\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">A:<\/strong>\u00a0It is the Otis Ultra Drive 403B lift inverter, and it controls the speed of the traction machine of the lift. It is the 110VAC version with the DC caps external, and it is fitted in the lift control panel. The unit is supplied together with the board GCA26800QC2.<\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Q2: What other names and part numbers is this inverter known by?<\/strong><\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">A:<\/strong>\u00a0The inverter is written GAA21305WS10, and it is also written GDA21305WS10 in some supplier listings. It is best known as the Ultra Drive 403B, and it is also called the Otis lift inverter, the Otis frequency converter, the Otis VVVF drive and the Otis lift drive. The unit is also listed with the board GCA26800QC2 as part of the description.<\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Q3: Which version of the Ultra Drive 403B is this, and how do I check it?<\/strong><\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">A:<\/strong>\u00a0This is the version marked 110VAC with the DC caps external, and the DC caps version is part of the identification of the drive. The same drive is also supplied as the 110VAC version with the DC caps internal, under a different part number. Please compare the part number and the version marking on your original drive before ordering, because the external and the internal versions are not the same unit.<\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Q4: What board is supplied with this inverter?<\/strong><\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">A:<\/strong>\u00a0This drive is supplied with the board GCA26800QC2. The DC caps internal version of the same drive is supplied with the board GCA26800QC7. If you only need the board, please send us a photo of the board and its label, and we will confirm the correct one for your drive.<\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Q5: Which Otis lifts is it used on?<\/strong><\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">A:<\/strong>\u00a0It is used on Otis lifts that are fitted with the Ultra Drive 403B inverter. The drive works with the lift controller of the installation, and the exact configuration depends on the controller type and the lift data. Please confirm the lift model, the controller type and the drive part number before ordering.<\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Q6: How can I confirm this inverter matches my lift, and do you supply other Otis drives and boards?<\/strong><\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">A:<\/strong>\u00a0Please compare the part number, the version marking and the connector and terminal layout with your original drive. If you are not sure, please send clear photos of the drive, the board inside it and the rating label, and our technical team can help identify the correct unit. We also supply the other Ultra Drive 403B versions, the Ultra Drive OVFR03B-401 and OVFR03B-402 inverters, the Otis drive boards and other Otis lift control parts.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Otis inverter GAA21305WS10 is the Ultra Drive 403B lift drive, the 110VAC version with the DC caps external, and it is supplied with the board GCA26800QC2. This Otis lift inverter controls the traction machine in a VVVF system, and it is fitted in the lift control panel. It is also known as the Otis frequency converter, the Otis lift drive, the Otis VVVF inverter and the Otis Ultra Drive assembly.<\/p>","protected":false},"featured_media":8178,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_titles_title":"Otis Elevator Inverter GAA21305WS10 Ultra Drive 403B","_seopress_titles_desc":"Otis inverter GAA21305WS10, the Ultra Drive 403B 110VAC lift drive with the DC caps external, supplied with the board GCA26800QC2. 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