{"id":6612,"date":"2024-01-19T22:47:50","date_gmt":"2024-01-19T21:47:50","guid":{"rendered":"https:\/\/www.kfactor.it\/kfactor\/en\/?post_type=product&p=6612"},"modified":"2026-03-23T17:19:14","modified_gmt":"2026-03-23T16:19:14","slug":"attp-three-phase-autotransformers-from-1-to-500kva","status":"publish","type":"product","link":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/autotransformers\/attp-three-phase-autotransformers-from-1-to-500kva\/","title":{"rendered":"ATTP – THREE PHASE AUTOTRANSFORMERS from 1 to 500kVA"},"content":{"rendered":"

 <\/p>\n\n\n\n
Input\/output rated voltage: 230-400V+N
\nOpen type construction
\nProtection IP00
\nIsolation class F (Ta max 40\u00b0C)
\nCopper windings cl. F
\nFrequency 50\/60Hz
\nResin impregnated and tropicalised
\nConnections on terminal blocks to 25kVA (or to 63A)
\nConnections on brass bolts from 30kVA (or from 64A)
\nExtra low losses grain oriented core from 40kVA
\nVector group: Yn0
\nApplied standards: EN61558-2-13<\/td>\n		\"schema<\/a>
\n<\/a><\/td>\n		\"sim-trafoaut\"<\/a>
\n<\/a>\"sim-ce\"<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n
\u00a0\"disegno<\/a><\/td>\n\u00a0\"disegno<\/td>\n<\/tr>\n
A<\/td>\nB<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
power<\/td>\npart no.<\/td>\nlosses\u00a0(W)<\/td>\nImp.V<\/td>\ndimensions mm.<\/td>\nDWG<\/td>\nweight<\/td>\nbox<\/td>\n<\/tr>\n
KVA<\/td>\nno load<\/td>\nload<\/td>\n%<\/td>\nA<\/td>\nB<\/td>\nC<\/td>\nD<\/td>\nE<\/td>\nF<\/td>\nkg.<\/td>\ncode<\/td>\n<\/tr>\n
1<\/td>\nATTP179<\/td>\n12<\/td>\n50<\/td>\n3.0<\/td>\n180<\/td>\n120<\/td>\n150<\/td>\n145<\/td>\n70<\/td>\n6<\/td>\nA<\/td>\n7.3<\/td>\nSAM01<\/a><\/td>\n<\/tr>\n
2<\/td>\nATTP219<\/td>\n20<\/td>\n80<\/td>\n3.0<\/td>\n180<\/td>\n140<\/td>\n150<\/td>\n145<\/td>\n85<\/td>\n6<\/td>\nA<\/td>\n11.0<\/td>\nSAM01<\/a><\/td>\n<\/tr>\n
3<\/td>\nATTP249<\/td>\n28<\/td>\n100<\/td>\n3.0<\/td>\n240<\/td>\n145<\/td>\n185<\/td>\n175<\/td>\n90<\/td>\n6<\/td>\nA<\/td>\n17.0<\/td>\nSAM01<\/a><\/td>\n<\/tr>\n
4<\/td>\nATTP267<\/td>\n35<\/td>\n120<\/td>\n3.0<\/td>\n240<\/td>\n155<\/td>\n185<\/td>\n175<\/td>\n100<\/td>\n6<\/td>\nA<\/td>\n18.5<\/td>\nSAM01<\/a><\/td>\n<\/tr>\n
5<\/td>\nATTP287<\/td>\n40<\/td>\n150<\/td>\n3.0<\/td>\n240<\/td>\n170<\/td>\n185<\/td>\n175<\/td>\n115<\/td>\n6<\/td>\nA<\/td>\n22.0<\/td>\nSAM01<\/a><\/td>\n<\/tr>\n
7.5<\/td>\nATTP337<\/td>\n50<\/td>\n200<\/td>\n3.0<\/td>\n300<\/td>\n195<\/td>\n230<\/td>\n220<\/td>\n105<\/td>\n6<\/td>\nA<\/td>\n35.0<\/td>\nSAM02<\/a><\/td>\n<\/tr>\n
10<\/td>\nATTP387<\/td>\n55<\/td>\n230<\/td>\n3.0<\/td>\n300<\/td>\n205<\/td>\n230<\/td>\n220<\/td>\n115<\/td>\n6<\/td>\nA<\/td>\n39.0<\/td>\nSAM02<\/a><\/td>\n<\/tr>\n
15<\/td>\nATTP427<\/td>\n80<\/td>\n300<\/td>\n3.0<\/td>\n360<\/td>\n250<\/td>\n285<\/td>\n280<\/td>\n140<\/td>\n8<\/td>\nA<\/td>\n53.0<\/td>\nSAM03<\/a><\/td>\n<\/tr>\n
20<\/td>\nATTP467<\/td>\n90<\/td>\n320<\/td>\n3.0<\/td>\n360<\/td>\n260<\/td>\n285<\/td>\n280<\/td>\n150<\/td>\n8<\/td>\nA<\/td>\n62.0<\/td>\nSAM03<\/a><\/td>\n<\/tr>\n
25<\/td>\nATTP507<\/td>\n95<\/td>\n380<\/td>\n3.0<\/td>\n420<\/td>\n265<\/td>\n360<\/td>\n300<\/td>\n140<\/td>\n8<\/td>\nA<\/td>\n74.0<\/td>\nSAM04<\/a><\/td>\n<\/tr>\n
30<\/td>\nATTP547<\/td>\n105<\/td>\n420<\/td>\n3.0<\/td>\n420<\/td>\n295<\/td>\n360<\/td>\n300<\/td>\n170<\/td>\n8<\/td>\nA<\/td>\n94.0<\/td>\nSAM04<\/a><\/td>\n<\/tr>\n
40<\/td>\nATTP627<\/td>\n120<\/td>\n500<\/td>\n3.0<\/td>\n480<\/td>\n290<\/td>\n465<\/td>\n370<\/td>\n190<\/td>\n10<\/td>\nB<\/td>\n115.0<\/td>\nSAM05<\/a><\/td>\n<\/tr>\n
50<\/td>\nATTP707<\/td>\n150<\/td>\n600<\/td>\n3.0<\/td>\n480<\/td>\n290<\/td>\n465<\/td>\n370<\/td>\n190<\/td>\n10<\/td>\nB<\/td>\n125.0<\/td>\nSAM05<\/a><\/td>\n<\/tr>\n
60<\/td>\nATTP727<\/td>\n175<\/td>\n750<\/td>\n3.0<\/td>\n540<\/td>\n270<\/td>\n510<\/td>\n490<\/td>\n200<\/td>\n10<\/td>\nB<\/td>\n140.0<\/td>\nSAM07<\/a><\/td>\n<\/tr>\n
70<\/td>\nATTP747<\/td>\n180<\/td>\n800<\/td>\n3.0<\/td>\n540<\/td>\n270<\/td>\n510<\/td>\n490<\/td>\n200<\/td>\n10<\/td>\nB<\/td>\n152.0<\/td>\nSAM07<\/a><\/td>\n<\/tr>\n
80<\/td>\nATTP767<\/td>\n200<\/td>\n1000<\/td>\n3.0<\/td>\n540<\/td>\n270<\/td>\n510<\/td>\n490<\/td>\n200<\/td>\n10<\/td>\nB<\/td>\n160.0<\/td>\nSAM07<\/a><\/td>\n<\/tr>\n
90<\/td>\nATTP787<\/td>\n210<\/td>\n1200<\/td>\n3.0<\/td>\n540<\/td>\n370<\/td>\n510<\/td>\n490<\/td>\n200<\/td>\n10<\/td>\nB<\/td>\n165.0<\/td>\nSAM07<\/a><\/td>\n<\/tr>\n
100<\/td>\nATTP807<\/td>\n230<\/td>\n1400<\/td>\n3.0<\/td>\n540<\/td>\n370<\/td>\n510<\/td>\n490<\/td>\n200<\/td>\n10<\/td>\nB<\/td>\n178.0<\/td>\nSAM07<\/a><\/td>\n<\/tr>\n
125<\/td>\nATTP812<\/td>\n290<\/td>\n1600<\/td>\n3.0<\/td>\n690<\/td>\n340<\/td>\n660<\/td>\n600<\/td>\n210<\/td>\n10<\/td>\nB<\/td>\n235.0<\/td>\nSAM07<\/a><\/td>\n<\/tr>\n
150<\/td>\nATTP817<\/td>\n310<\/td>\n1850<\/td>\n3.0<\/td>\n690<\/td>\n340<\/td>\n660<\/td>\n300<\/td>\n200<\/td>\n10<\/td>\nB<\/td>\n258.0<\/td>\nSAM07<\/a><\/td>\n<\/tr>\n
175<\/td>\nATTP822<\/td>\n320<\/td>\n2100<\/td>\n3.0<\/td>\n690<\/td>\n340<\/td>\n660<\/td>\n300<\/td>\n200<\/td>\n10<\/td>\nB<\/td>\n280.0<\/td>\nSAM07<\/a><\/td>\n<\/tr>\n
200<\/td>\nATTP827<\/td>\n330<\/td>\n2350<\/td>\n3.0<\/td>\n690<\/td>\n340<\/td>\n660<\/td>\n300<\/td>\n200<\/td>\n10<\/td>\nB<\/td>\n300.0<\/td>\nSAM07<\/a><\/td>\n<\/tr>\n
ASK FOR COMPLETE PART NOS AND DIFFERENT VOLTAGE OR RATINGS ABOVE 200KVA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

  Input\/output rated voltage: 230-400V+N Open type construction Protection IP00 Isolation class F (Ta max 40\u00b0C) Copper windings cl. F Frequency 50\/60Hz Resin impregnated and tropicalised Connections on terminal blocks to 25kVA (or to 63A) Connections on brass bolts from 30kVA (or from 64A) Extra low losses grain oriented core from 40kVA Vector group: Yn0 […]<\/p>\n","protected":false},"featured_media":13021,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[218],"product_tag":[283,1688,287,307,308],"class_list":["post-6612","product","type-product","status-publish","has-post-thumbnail","product_cat-autotransformers","product_tag-isolation","product_tag-safety-transformers-3","product_tag-single-phase","product_tag-transformer","product_tag-transformer-2","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author","","first","instock","featured","taxable","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"\nATTP - THREE PHASE AUTOTRANSFORMERS from 1 to 500kVA - K-factor<\/title>\n<meta name=\"description\" content=\"ATTP three-phase autotransformers (1-500kVA). High-efficiency, cost-effective solution for 230\/400V voltage adjustments, featuring low-loss cores and copper windings.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/autotransformers\/attp-three-phase-autotransformers-from-1-to-500kva\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ATTP - THREE PHASE AUTOTRANSFORMERS from 1 to 500kVA - K-factor\" \/>\n<meta property=\"og:description\" content=\"ATTP three-phase autotransformers (1-500kVA). High-efficiency, cost-effective solution for 230\/400V voltage adjustments, featuring low-loss cores and copper windings.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/autotransformers\/attp-three-phase-autotransformers-from-1-to-500kva\/\" \/>\n<meta property=\"og:site_name\" content=\"K-factor\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-23T16:19:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kfactor.it\/wp-content\/uploads\/2024\/04\/ft1280-attp01.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"720\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/autotransformers\\\/attp-three-phase-autotransformers-from-1-to-500kva\\\/\",\"url\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/autotransformers\\\/attp-three-phase-autotransformers-from-1-to-500kva\\\/\",\"name\":\"ATTP - THREE PHASE AUTOTRANSFORMERS from 1 to 500kVA - K-factor\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/autotransformers\\\/attp-three-phase-autotransformers-from-1-to-500kva\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/autotransformers\\\/attp-three-phase-autotransformers-from-1-to-500kva\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.kfactor.it\\\/wp-content\\\/uploads\\\/2024\\\/04\\\/ft1280-attp01.jpg\",\"datePublished\":\"2024-01-19T21:47:50+00:00\",\"dateModified\":\"2026-03-23T16:19:14+00:00\",\"description\":\"ATTP three-phase autotransformers (1-500kVA). 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