{"id":8163,"date":"2026-10-13T03:30:35","date_gmt":"2026-10-13T03:30:35","guid":{"rendered":"https:\/\/potensilift.com\/?post_type=product&#038;p=8163"},"modified":"2026-10-13T03:30:35","modified_gmt":"2026-10-13T03:30:35","slug":"elevator-magnetic-switch-tca177ch1-green-prs-l300mm-for-otis","status":"publish","type":"product","link":"https:\/\/potensilift.com\/ja\/%e8%a3%bd%e5%93%81\/elevator-magnetic-switch-tca177ch1-green-prs-l300mm-for-otis\/","title":{"rendered":"Elevator Magnetic Switch TCA177CH1 Green PRS L300mm for Otis"},"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\">TCA177CH1<\/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\">TCA 177 CH1, TCA-177CH1, KM51041497<\/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\">Elevator Magnetic Switch (Positioning \/ Levelling Magnetic Switch)<\/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\">Car position detection in the Otis PRS position reference system<\/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 elevators with the Otis Elevator Positioning System (OT-EPS)<\/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\">Green version, PRS L300mm<\/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 magnetic switches of the same Otis TCA177 and TAB177 family:<\/p>\n<ul class=\"my-2 space-y-1.5 leading-[1.85] pl-5\">\n<li class=\"leading-[1.85] pl-1\">TCA177AF1 \u2014 blue version<\/li>\n<li class=\"leading-[1.85] pl-1\">TCA177CH4 \u2014 Otis levelling switch<\/li>\n<li class=\"leading-[1.85] pl-1\">TAB177CG1 \u2014 brown bistable version<\/li>\n<li class=\"leading-[1.85] pl-1\">TAA177EH1 \u2014 magnetic switch for PRS<\/li>\n<\/ul>\n<p class=\"!mt-2 !mb-2 leading-relaxed\">Other Otis switches and sensors:<\/p>\n<ul class=\"my-2 space-y-1.5 leading-[1.85] pl-5\">\n<li class=\"leading-[1.85] pl-1\"><a href=\"https:\/\/potensilift.com\/en\/product\/elevator-overspeed-switch-taa177ah-for-otis\/\">TAA177AH<\/a> \u2014 Otis overspeed switch<\/li>\n<li class=\"leading-[1.85] pl-1\">GAA177HB1 \u2014 door zone magnetic switch<\/li>\n<li class=\"leading-[1.85] pl-1\">GAA177HB6 \u2014 NPN version<\/li>\n<li class=\"leading-[1.85] pl-1\">GAA177HB2 \u2014 PNP door zone version<\/li>\n<\/ul>\n<p class=\"!mt-2 !mb-2 leading-relaxed\">Potensi supplies the Otis magnetic switch TCA177CH1, the Otis elevator magnetic switch and other Otis positioning and levelling switches. 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 TCA177CH1 magnetic switch 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 magnetic switch used with the PRS position reference system. It works for position detection in the Otis Elevator Positioning System (OT-EPS). It is officially listed as the magnetic switch for PRS L300MM, and it belongs to the positioning devices of the Otis lift.<\/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 switch 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 switch is written TCA177CH1, and it is also written TCA 177 CH1 and TCA-177CH1. The cross reference part number is KM51041497. It is also known as the Otis magnetic switch, the Otis position switch, the Otis levelling switch and the Otis detector. In French catalogues it is listed as DOIGT MAGNETIQUE TCA177CH1, which means magnetic finger switch.<\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Q3: What does the green version mean, and are there other colour versions?<\/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 green colour is the version marking of this magnetic switch, and the same family is supplied in several colours. For example, TCA177AF1 is the blue version, and TAB177CG1 is the brown bistable version. The colour identifies the version of the switch, so please compare the colour of the original part before ordering.<\/p>\n<p class=\"!mt-2 !mb-2 leading-relaxed\"><strong class=\"font-semibold text-zinc-900 dark:text-zinc-100\">Q4: What does L300mm mean, and which version do I need?<\/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 model is marked L300mm, and the L dimension is part of the model marking of this version. A different L dimension is a different version of the switch. Please confirm the L marking on your original part before ordering.<\/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 and systems 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 use the Otis Elevator Positioning System, and the official component family is Otis Elevator Positioning System (All Models). It is used together with the PRS position reference system of the lift. Please confirm the controller type and the PRS version 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 switch matches my lift, and do you supply other Otis switches and sensors?<\/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 TCA177CH1, the colour of the switch, the L marking and the connector with the switch on your lift. If you are not sure, please send clear photos of the switch and its label, and our technical team can help identify the correct part. We also supply the Otis overspeed switch TAA177AH, the Otis door zone magnetic switches GAA177HB1 to GAA177HB6, the TCA177CH4 levelling switch and other Otis switches, sensors and lift spare parts.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Otis magnetic switch TCA177CH1 is the green version of the Otis elevator magnetic switch used with the PRS position reference system, and it detects the car position in the Otis Elevator Positioning System. This Otis lift magnetic switch is a small sensor that is mounted in the shaft. It is also known as the Otis position switch, the Otis levelling magnetic switch and the Otis PRS magnetic switch.<\/p>","protected":false},"featured_media":8165,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_titles_title":"Elevator Magnetic Switch TCA177CH1 Green PRS L300mm for Otis","_seopress_titles_desc":"Otis magnetic switch TCA177CH1, the green magnetic switch for PRS L300mm used in the Otis Elevator Positioning System. Otis lift position switch, levelling sensor, detector and magnetic finger switch spare part, cross reference KM51041497, from Potensi.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":""},"product_brand":[],"product_cat":[26,127,109],"product_tag":[],"class_list":{"0":"post-8163","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-elevator-parts","7":"product_cat-for-otis","8":"product_cat-others-elevator-parts","10":"first","11":"instock","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/potensilift.com\/ja\/wp-json\/wp\/v2\/product\/8163"}],"collection":[{"href":"https:\/\/potensilift.com\/ja\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/potensilift.com\/ja\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/potensilift.com\/ja\/wp-json\/wp\/v2\/comments?post=8163"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/potensilift.com\/ja\/wp-json\/wp\/v2\/media\/8165"}],"wp:attachment":[{"href":"https:\/\/potensilift.com\/ja\/wp-json\/wp\/v2\/media?parent=8163"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/potensilift.com\/ja\/wp-json\/wp\/v2\/product_brand?post=8163"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/potensilift.com\/ja\/wp-json\/wp\/v2\/product_cat?post=8163"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/potensilift.com\/ja\/wp-json\/wp\/v2\/product_tag?post=8163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}