{"id":23129,"date":"2026-11-05T18:12:50","date_gmt":"2026-11-05T10:12:50","guid":{"rendered":"https:\/\/lorentzzi.com\/?p=23129"},"modified":"2026-11-06T14:27:32","modified_gmt":"2026-11-06T06:27:32","slug":"ksd301-ksd302-ksd303-thermostats","status":"publish","type":"post","link":"https:\/\/lorentzzi.com\/pt\/ksd301-ksd302-ksd303-thermostats\/","title":{"rendered":"Termostatos KSD301, KSD302 e KSD303: Defini\u00e7\u00f5es, diferen\u00e7as e como usar"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"23129\" class=\"elementor elementor-23129\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-acd09af e-flex e-con-boxed e-con e-parent\" data-id=\"acd09af\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-99cdad4 elementor-widget elementor-widget-text-editor\" data-id=\"99cdad4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Voc\u00ea sabe por que uma garrafa t\u00e9rmica consegue manter uma temperatura constante sem falhar?<\/span><\/p><p><span style=\"font-weight: 400;\">A raz\u00e3o \u00e9 simples: as chaleiras t\u00e9rmicas podem desligar-se e reiniciar automaticamente porque possuem um termostato com contato normalmente fechado KSD301, KSD302 ou KSD303 embutido. Quando a temperatura da \u00e1gua atinge a temperatura definida, o termostato interrompe o fornecimento de energia e interrompe o aquecimento. Quando a temperatura cai abaixo da temperatura definida, o aquecimento \u00e9 retomado, e esse processo se repete.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-041bd0f elementor-widget elementor-widget-image\" data-id=\"041bd0f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD301-KSD302-and-KSD303-Thermostats.jpg\" class=\"attachment-large size-large wp-image-23132\" alt=\"Termostatos KSD301, KSD302 e KSD303\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD301-KSD302-and-KSD303-Thermostats.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD301-KSD302-and-KSD303-Thermostats-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD301-KSD302-and-KSD303-Thermostats-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD301-KSD302-and-KSD303-Thermostats-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD301-KSD302-and-KSD303-Thermostats-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD301-KSD302-and-KSD303-Thermostats-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fbed22a elementor-widget elementor-widget-text-editor\" data-id=\"fbed22a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Para entender melhor os termostatos KSD301 e KSD302, vamos apresent\u00e1-los em detalhes a partir dos quatro aspectos a seguir:<\/span><\/p><ol><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">O que s\u00e3o os termostatos KSD301, KSD302 e KSD303?<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Quais s\u00e3o as principais diferen\u00e7as entre eles?<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Como utilizar os termostatos KSD301, KSD302 e KSD303?<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Aplica\u00e7\u00f5es t\u00edpicas dos termostatos KSD301, KSD302 e KSD303.<\/span><\/li><\/ol><p><span style=\"font-weight: 400;\">Agora, vamos responder a essas perguntas, uma por uma.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d24b9e9 elementor-widget elementor-widget-heading\" data-id=\"d24b9e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">O que s\u00e3o os termostatos KSD301, KSD302 e KSD303?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c2ca0f7 elementor-widget elementor-widget-image\" data-id=\"c2ca0f7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/The-Bimetallic-Strip-Inside-the-KSD-Thermal-Switch-Expands-and-Deforms-Due-to-Heat.jpg\" class=\"attachment-large size-large wp-image-23133\" alt=\"\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/The-Bimetallic-Strip-Inside-the-KSD-Thermal-Switch-Expands-and-Deforms-Due-to-Heat.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/The-Bimetallic-Strip-Inside-the-KSD-Thermal-Switch-Expands-and-Deforms-Due-to-Heat-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/The-Bimetallic-Strip-Inside-the-KSD-Thermal-Switch-Expands-and-Deforms-Due-to-Heat-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/The-Bimetallic-Strip-Inside-the-KSD-Thermal-Switch-Expands-and-Deforms-Due-to-Heat-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/The-Bimetallic-Strip-Inside-the-KSD-Thermal-Switch-Expands-and-Deforms-Due-to-Heat-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/The-Bimetallic-Strip-Inside-the-KSD-Thermal-Switch-Expands-and-Deforms-Due-to-Heat-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a92d0a elementor-widget elementor-widget-text-editor\" data-id=\"0a92d0a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">KSD301, KSD302 e KSD303 s\u00e3o interruptores t\u00e9rmicos bimet\u00e1licos comuns. Quando a temperatura atinge um valor definido, a tira bimet\u00e1lica se deforma devido ao calor (expans\u00e3o e contra\u00e7\u00e3o t\u00e9rmica), fazendo com que os contatos se fechem ou se abram. Os modelos KSD301 e KSD302 s\u00e3o amplamente utilizados em equipamentos el\u00e9tricos para regula\u00e7\u00e3o da temperatura da \u00e1gua, preven\u00e7\u00e3o de queima a seco e prote\u00e7\u00e3o contra superaquecimento.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-95e2679 elementor-widget elementor-widget-video\" data-id=\"95e2679\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/youtu.be\\\/zDArNMnyF9c?si=YsImSIV4tVsX9Vve&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ccee71 elementor-widget elementor-widget-text-editor\" data-id=\"8ccee71\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Esses interruptores t\u00e9rmicos oferecem uma ampla faixa de temperatura ajust\u00e1vel, que vai de 0 \u00b0C, 20 \u00b0C, 40 \u00b0C, 65 \u00b0C, 80 \u2103, 100 \u2103 at\u00e9 um m\u00e1ximo de 300 \u00b0C.<\/span><\/p><p><span style=\"font-weight: 400;\">Eles suportam dois modos de contato: normalmente fechado (NC) e normalmente aberto (NO).<\/span><\/p><p><span style=\"font-weight: 400;\">Para aparelhos de aquecimento, como chaleiras el\u00e9tricas, o termostato KSD301 ou KSD302, do tipo normalmente fechado, \u00e9 uma escolha comum. Quando a temperatura atinge o valor pr\u00e9-definido (por exemplo, 100 \u00b0C), o termostato muda do estado fechado para o estado aberto, desligando o circuito de aquecimento. Depois que a temperatura desce abaixo do limite definido, os contatos se fecham novamente, retomando o aquecimento.<\/span><\/p><p><span style=\"font-weight: 400;\">Para ventiladores de resfriamento ou sistemas de refrigera\u00e7\u00e3o, utilizam-se termostatos KSD301\/KSD302 normalmente abertos para prote\u00e7\u00e3o contra superaquecimento. Por exemplo, um termostato KSD301 de 40 \u00b0C pode ser instalado na parte inferior da c\u00e2mara de aquecimento. Quando a temperatura ultrapassa 40 \u00b0C, os contatos do termostato se fecham e o ventilador \u00e9 acionado automaticamente, protegendo assim os componentes internos contra danos causados pelo superaquecimento.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2dadbf8 elementor-widget elementor-widget-heading\" data-id=\"2dadbf8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Principais diferen\u00e7as entre os interruptores t\u00e9rmicos KSD301, KSD302 e KSD303<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f1478ab elementor-widget elementor-widget-text-editor\" data-id=\"f1478ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Ao comprar um termostato de a\u00e7\u00e3o instant\u00e2nea da s\u00e9rie KSD, os fornecedores sempre perguntam qual modelo voc\u00ea prefere: KSD301, KSD302 ou KSD303? Eles s\u00e3o muito bem informados, mas quais s\u00e3o as principais diferen\u00e7as entre esses tr\u00eas modelos de termostatos?<\/span><\/p><p><span style=\"font-weight: 400;\">A principal diferen\u00e7a est\u00e1 na corrente nominal de contato\/capacidade de carga.<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">KSD301: Corrente nominal de contato 10 A,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">KSD302: Corrente nominal de contato de 16 A,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">KSD303: Corrente nominal de contato de 30 A.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Voc\u00ea precisa selecionar o modelo adequado com base na pot\u00eancia nominal do seu aquecedor, equipamento de refrigera\u00e7\u00e3o ou outro equipamento.<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">KSD301: Adequado para cargas resistivas de at\u00e9 1,5 kW a 220 VCA,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">KSD302: Adequado para cargas resistivas de at\u00e9 2,0 kW a 220 VCA,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">KSD303: Adequado para cargas resistivas de at\u00e9 3,5 kW a 220 VCA.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Para cargas de pot\u00eancia mais elevadas, que excedam os intervalos acima, utilize o termostato KSD com um <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/reles-de-estado-solido\/\"><span style=\"font-weight: 400;\">rel\u00e9 de estado s\u00f3lido<\/span><\/a><\/span><span style=\"font-weight: 400;\"> ou <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/products\/accessories\/cjx2-contactor\/\"><span style=\"font-weight: 400;\">Contator CA<\/span><\/a><\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f19fb39 elementor-widget elementor-widget-heading\" data-id=\"f19fb39\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Como utilizar os termostatos KSD301, KSD302 e KSD303?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-92bec52 elementor-widget elementor-widget-text-editor\" data-id=\"92bec52\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">O uso correto dos interruptores t\u00e9rmicos da s\u00e9rie KSD pode ajudar voc\u00ea a obter um controle adequado da temperatura e proteger seu equipamento contra riscos de superaquecimento.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Com base em nossa experi\u00eancia, recomenda-se seguir as quatro etapas a seguir.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-095b27c elementor-widget elementor-widget-heading\" data-id=\"095b27c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Passo 1: Escolha dos termostatos KSD301, KSD302 e KSD303 adequados<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a5e1af9 elementor-widget elementor-widget-heading\" data-id=\"a5e1af9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">1. Escolha uma temperatura adequada<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46dceb9 elementor-widget elementor-widget-text-editor\" data-id=\"46dceb9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Os modelos KSD301, KSD302 e KSD303 s\u00e3o interruptores de controle de temperatura fixa, totalmente diferentes de <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/tcx5-universal-pid-temperature-controller\/\"><span style=\"font-weight: 400;\">Controladores de temperatura PID<\/span><\/a><\/span><span style=\"font-weight: 400;\"> que oferecem um controle de temperatura mais flex\u00edvel.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Portanto, ao selecionar o interruptor adequado, o primeiro passo \u00e9 escolher a temperatura adequada.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-228fab0 elementor-widget elementor-widget-image\" data-id=\"228fab0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Used-in-Conjunction-With-SSR-Mounted-on-Heat-Sink.jpg\" class=\"attachment-large size-large wp-image-23134\" alt=\"\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Used-in-Conjunction-With-SSR-Mounted-on-Heat-Sink.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Used-in-Conjunction-With-SSR-Mounted-on-Heat-Sink-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Used-in-Conjunction-With-SSR-Mounted-on-Heat-Sink-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Used-in-Conjunction-With-SSR-Mounted-on-Heat-Sink-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Used-in-Conjunction-With-SSR-Mounted-on-Heat-Sink-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Used-in-Conjunction-With-SSR-Mounted-on-Heat-Sink-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1ea2fa6 elementor-widget elementor-widget-text-editor\" data-id=\"1ea2fa6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Por exemplo, se voc\u00ea quiser desligar a energia quando a temperatura ultrapassar 80 graus Celsius (por exemplo, instalando esses interruptores de controle de temperatura KSD301, KSD302 ou KSD303 em nosso <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/ssr-heat-sinks\/\"><span style=\"font-weight: 400;\">Dissipador de calor SSR<\/span><\/a><\/span><span style=\"font-weight: 400;\"> para desligar a energia quando a temperatura ultrapassar 80 graus Celsius, protegendo assim o <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/solid-state-relay-problems-and-solutions-the-ultimate-guide\/\"><span style=\"font-weight: 400;\">SSR contra danos causados por superaquecimento<\/span><\/a><\/span><span style=\"font-weight: 400;\">), voc\u00ea deve escolher os modelos KSD301, KSD302 ou KSD303 do tipo normalmente fechado, com faixa de temperatura de 80 graus Celsius.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c94d1f elementor-widget elementor-widget-heading\" data-id=\"1c94d1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">2. Selecione o tipo de sa\u00edda<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9d6e460 elementor-widget elementor-widget-text-editor\" data-id=\"9d6e460\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Os interruptores de controle de temperatura da s\u00e9rie KSD podem ser divididos nos tipos normalmente fechado e normalmente aberto. Os tipos normalmente fechados s\u00e3o normalmente utilizados para prote\u00e7\u00e3o contra superaquecimento, enquanto os tipos normalmente abertos s\u00e3o comumente utilizados para acionamento de ventiladores ativado por temperatura, alarmes etc.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5c0b04c elementor-widget elementor-widget-heading\" data-id=\"5c0b04c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">3. Determinar o m\u00e9todo de reinicializa\u00e7\u00e3o<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f35b55 elementor-widget elementor-widget-text-editor\" data-id=\"7f35b55\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Normalmente, os interruptores de corte de temperatura KSD301, KSD302 e KSD303 v\u00eam com uma fun\u00e7\u00e3o de reinicializa\u00e7\u00e3o autom\u00e1tica por padr\u00e3o, o que significa que eles fechar\u00e3o ou abrir\u00e3o automaticamente os contatos quando a temperatura estiver acima ou abaixo do valor definido. Caso precise de um termostato sem reinicializa\u00e7\u00e3o, consulte seu fornecedor.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f5bb9ce elementor-widget elementor-widget-heading\" data-id=\"f5bb9ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Etapa 2: Instala\u00e7\u00e3o dos termostatos KSD301, KSD302 e KSD303<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33103e8 elementor-widget elementor-widget-text-editor\" data-id=\"33103e8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Como voc\u00ea pode ver, a superf\u00edcie redonda met\u00e1lica do termostato da s\u00e9rie KSD \u00e9 o sensor de temperatura.<\/span><\/p><p><span style=\"font-weight: 400;\">Essa superf\u00edcie redonda de metal deve estar em contato direto com a superf\u00edcie de aquecimento e ser fixada firmemente com dois parafusos M4.<\/span><\/p><p><span style=\"font-weight: 400;\">Al\u00e9m disso, \u00e9 necess\u00e1rio aplicar uma fina camada de pasta t\u00e9rmica entre a superf\u00edcie de contato e o objeto a ser aquecido, a fim de reduzir os espa\u00e7os de ar e garantir uma medi\u00e7\u00e3o precisa da temperatura.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dbd5fda elementor-widget elementor-widget-image\" data-id=\"dbd5fda\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/Apply-Thermal-Grease-to-the-KSD301-Thermostat.jpg\" class=\"attachment-large size-large wp-image-23142\" alt=\"Aplique pasta t\u00e9rmica no termostato KSD301\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/Apply-Thermal-Grease-to-the-KSD301-Thermostat.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/Apply-Thermal-Grease-to-the-KSD301-Thermostat-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/Apply-Thermal-Grease-to-the-KSD301-Thermostat-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/Apply-Thermal-Grease-to-the-KSD301-Thermostat-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/Apply-Thermal-Grease-to-the-KSD301-Thermostat-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/Apply-Thermal-Grease-to-the-KSD301-Thermostat-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-09619c8 elementor-widget elementor-widget-heading\" data-id=\"09619c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Etapa 3: Fia\u00e7\u00e3o dos termostatos KSD301, KSD302 e KSD303<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cf4c23d elementor-widget elementor-widget-text-editor\" data-id=\"cf4c23d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">O termostato da s\u00e9rie KSD possui apenas dois terminais, sem distin\u00e7\u00e3o de polaridade, o que permite que seja conectado em s\u00e9rie em um circuito. Recomenda-se conect\u00e1-lo em s\u00e9rie com o fio de fase (220 V) da carga de aquecimento.\u00a0<\/span><\/p><p>A seguir, apresentamos um diagrama de fia\u00e7\u00e3o t\u00edpico e simples (ao realizar a instala\u00e7\u00e3o el\u00e9trica, devem ser utilizados alguns dispositivos de prote\u00e7\u00e3o, como o MCB (disjuntor miniatura) ou o RCBO (disjuntor de corrente residual com prote\u00e7\u00e3o contra sobrecorrente)):<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6351d68 elementor-widget elementor-widget-image\" data-id=\"6351d68\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Wiring-Diagram.jpg\" class=\"attachment-large size-large wp-image-23135\" alt=\"Diagrama de fia\u00e7\u00e3o dos termostatos da s\u00e9rie KSD\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Wiring-Diagram.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Wiring-Diagram-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Wiring-Diagram-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Wiring-Diagram-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Wiring-Diagram-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/11\/KSD-Series-Thermostats-Wiring-Diagram-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-94b4759 elementor-widget elementor-widget-text-editor\" data-id=\"94b4759\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Observa\u00e7\u00e3o: A corrente de carga n\u00e3o deve exceder a corrente nominal do termostato. Para aquecimento de alta pot\u00eancia (por exemplo, superior a 3,5 kW), \u00e9 recomend\u00e1vel utilizar um KSD301 para controlar um rel\u00e9 de estado s\u00f3lido ou um contator CA; nunca alimente diretamente elementos de aquecimento de alta corrente.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1701d88 elementor-widget elementor-widget-heading\" data-id=\"1701d88\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Etapa 4: Opera\u00e7\u00e3o experimental, uso a longo prazo e manuten\u00e7\u00e3o<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c85643e elementor-widget elementor-widget-text-editor\" data-id=\"c85643e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Ap\u00f3s concluir as tr\u00eas primeiras etapas, voc\u00ea poder\u00e1 prosseguir com a opera\u00e7\u00e3o de teste, a opera\u00e7\u00e3o de longo prazo e a manuten\u00e7\u00e3o de rotina.<\/span><\/p><p><span style=\"font-weight: 400;\">Primeiro, conecte brevemente a alimenta\u00e7\u00e3o do circuito para verificar se ele est\u00e1 funcionando corretamente. Por exemplo, se voc\u00ea tiver selecionado um termostato KSD301 normalmente fechado para 80 \u00b0C e quiser que ele proteja seu rel\u00e9 de estado s\u00f3lido (SSR) contra superaquecimento, durante a opera\u00e7\u00e3o de teste, aque\u00e7a o sensor de temperatura met\u00e1lico do KSD301 at\u00e9 80 \u00b0C e verifique se ele interrompe o sinal de controle do SSR. Se a alimenta\u00e7\u00e3o do SSR for interrompida imediatamente, o KSD301 est\u00e1 funcionando corretamente. Caso contr\u00e1rio, verifique cuidadosamente a fia\u00e7\u00e3o ou confirme se o termostato est\u00e1 com defeito.<\/span><\/p><p><span style=\"font-weight: 400;\">Ap\u00f3s testes bem-sucedidos, o sistema pode ser colocado em uso de longo prazo. Realize manuten\u00e7\u00e3o regular, como a verifica\u00e7\u00e3o de seu funcionamento a cada tr\u00eas meses.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b2d4bf elementor-widget elementor-widget-heading\" data-id=\"2b2d4bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Aplica\u00e7\u00f5es t\u00edpicas dos termostatos KSD301, KSD302 e KSD303<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1cf588d elementor-widget elementor-widget-text-editor\" data-id=\"1cf588d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Os protetores t\u00e9rmicos bimet\u00e1licos KSD301, KSD302 e KSD303 s\u00e3o amplamente utilizados em equipamentos de aquecimento devido \u00e0 sua facilidade de uso e tamb\u00e9m podem ser empregados em motores, transformadores etc. para evitar falhas causadas por superaquecimento.<\/span><\/p><p><span style=\"font-weight: 400;\">Voc\u00ea pode ler o texto a seguir para saber mais sobre os dispositivos que podem ser usados com os protetores t\u00e9rmicos bimet\u00e1licos KSD301, KSD302 e KSD303:<\/span><\/p><ol><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Aparelhos de aquecimento el\u00e9trico<\/b><span style=\"font-weight: 400;\">: Aquecedores el\u00e9tricos de \u00e1gua, chaleiras el\u00e9tricas, cafeteiras, bebedouros, torneiras de \u00e1gua quente, ferros a vapor.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Almofadas t\u00e9rmicas e pel\u00edculas t\u00e9rmicas<\/b><span style=\"font-weight: 400;\">: Filmes aquecedores PI, almofadas aquecedoras de silicone, aquecedores de cama, aquecedores de p\u00e9s.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Pequenos equipamentos de aquecimento dom\u00e9stico<\/b><span style=\"font-weight: 400;\">: Fornos el\u00e9tricos, fritadeiras de ar quente, churrasqueiras el\u00e9tricas, toalheiros, aquecedores de banheiro.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Prote\u00e7\u00e3o contra superaquecimento de motores e transformadores<\/b><span style=\"font-weight: 400;\">: Motores pequenos, motores de ventilador, transformadores de pot\u00eancia, conjuntos de baterias, m\u00f3dulos de recarga.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Pequenos conjuntos de aquecimento para uso industrial<\/b><span style=\"font-weight: 400;\">: Placas de aquecimento industriais, pequenos moldes de aquecimento, aquecedores auxiliares para arm\u00e1rios, unidades de aquecimento com termostato.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Outros equipamentos<\/b><span style=\"font-weight: 400;\">:<\/span> <span style=\"font-weight: 400;\">Desumidificadores, umidificadores, esterilizadores, secadores de lou\u00e7a, m\u00e1quinas de iogurte.<\/span><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fcfaa42 elementor-widget elementor-widget-heading\" data-id=\"fcfaa42\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclus\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea90ba0 elementor-widget elementor-widget-text-editor\" data-id=\"ea90ba0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Em resumo, os modelos KSD301, KSD302 e KSD303 s\u00e3o protetores t\u00e9rmicos bimet\u00e1licos simples, f\u00e1ceis de instalar e amplamente utilizados no controle de aquecimento.<\/span><\/p><p><span style=\"font-weight: 400;\">Seja para manter uma temperatura constante ou para proteger outros equipamentos contra danos causados pelo superaquecimento, os termostatos KSD301, KSD302 e KSD303 podem ajud\u00e1-lo.<\/span><\/p><p><span style=\"font-weight: 400;\">Caso deseje saber mais sobre os protetores t\u00e9rmicos bimet\u00e1licos KSD301, KSD302 e KSD303, entre em contato conosco, <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/pt\/\"><span style=\"font-weight: 400;\">Lorentzzi Electric<\/span><\/a><\/span><span style=\"font-weight: 400;\">, para mais informa\u00e7\u00f5es!<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Do you know why a thermos kettle can maintain a constant temperature without failure? The reason is simple: thermos kettles can automatically shut off and restart because they have a built-in KSD301, KSD302, or KSD303 normally closed contact thermostat. When the water temperature reaches the set temperature, the thermostat cuts off the power and stops [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":23130,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","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":"","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":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-23129","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-temperature-controller"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>KSD301, KSD302, KSD303 Thermostats: Definitions, Differences and How to Use<\/title>\n<meta name=\"description\" content=\"This blog post will explain what the KSD301, KSD302, and KSD303 thermostats are, what the differences are between them, and how they work.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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