{"id":10048,"date":"2023-07-10T13:50:11","date_gmt":"2023-07-10T05:50:11","guid":{"rendered":"https:\/\/lorentzzi.com\/?p=10048"},"modified":"2025-07-29T12:57:58","modified_gmt":"2025-07-29T04:57:58","slug":"contactor-vs-relay-9-key-differences-you-must-know","status":"publish","type":"post","link":"https:\/\/lorentzzi.com\/es\/contactor-vs-relay-9-key-differences-you-must-know\/","title":{"rendered":"Contactor vs Rel\u00e9: 9 diferencias clave que debe conocer"},"content":{"rendered":"
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Hoy vamos a hablar de las 9 diferencias entre contactores y rel\u00e9s<\/span>. Tenga en cuenta que los rel\u00e9s se refieren aqu\u00ed a los rel\u00e9s electromagn\u00e9ticos o rel\u00e9s de uso general<\/a><\/span> que conocemos.<\/span><\/p>

Los contactores y los rel\u00e9s son dos actuadores comunes. Sus diferencias se reflejan principalmente en el aspecto, la estructura, la funci\u00f3n, los escenarios de aplicaci\u00f3n, la tensi\u00f3n y la corriente de conmutaci\u00f3n, el coste, etc.<\/span><\/p>

A continuaci\u00f3n, explicaremos sus diferencias respectivamente.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Diferencia de aspecto entre un contactor y un rel\u00e9\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Diferencia\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
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Desde el punto de vista de la apariencia, <\/span>contactores<\/span><\/a><\/span> suelen ser m\u00e1s grandes que los rel\u00e9s y, en consecuencia, m\u00e1s pesados.<\/span><\/p>

Su principio de funcionamiento es el mismo, es decir, cuando se excita la bobina, se genera un campo magn\u00e9tico, que a su vez cierra o abre los contactos, realizando as\u00ed el control de conexi\u00f3n y desconexi\u00f3n de la carga.<\/span><\/p>

El contactor se compone principalmente de una bobina, una armadura m\u00f3vil, una armadura est\u00e1tica y contactos. Sus contactos suelen ser de aleaci\u00f3n de cobre o aleaci\u00f3n de plata, con contactos de gran tama\u00f1o, y este material tiene una excelente resistencia al desgaste y conductividad.<\/span><\/p>

Los rel\u00e9s electromagn\u00e9ticos tambi\u00e9n incluyen bobinas y contactos, y sus contactos tambi\u00e9n est\u00e1n hechos de aleaci\u00f3n de cobre o aleaci\u00f3n de plata, con contactos peque\u00f1os, buena conductividad y caracter\u00edsticas de corte de baja corriente.<\/span><\/p>

En el siguiente contenido, explicaremos en detalle sus componentes.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Estructura<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Tambi\u00e9n hay diferencias en la estructura de los contactores y los rel\u00e9s. Los contactores suelen incluir bobinas, n\u00facleos de hierro m\u00f3viles, n\u00facleos de hierro est\u00e1ticos, contactos principales, contactos auxiliares, <\/span>cubiertas de extinci\u00f3n de arco<\/b>muelles, etc.<\/span><\/p>

Los rel\u00e9s son relativamente sencillos en su composici\u00f3n, y suelen constar de bobinas, n\u00facleos de hierro, contactos, etc. Como la corriente y la tensi\u00f3n que dejan pasar son bajas, los rel\u00e9s electromagn\u00e9ticos suelen ser <\/span>no equipados con cubiertas de extinci\u00f3n de arcos<\/b>.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Estructuras\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
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Aplicaciones<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Los contactores se utilizan a menudo en escenarios de trabajo de alta potencia y cargas pesadas porque pueden soportar corrientes y tensiones elevadas.<\/span><\/p>

Por ejemplo, en la producci\u00f3n industrial, los contactores se utilizan habitualmente para accionar grandes motores. Estos motores necesitan funcionar continuamente con corrientes y tensiones estables para garantizar una producci\u00f3n ininterrumpida.<\/span><\/p>

Los contactores pueden controlar eficazmente el flujo de corriente y, cuando se utilizan junto con un rel\u00e9 t\u00e9rmico de sobrecarga, pueden proteger el motor de los da\u00f1os causados por sobrecargas y cortocircuitos.<\/span><\/p>

En cambio, los rel\u00e9s electromagn\u00e9ticos son m\u00e1s adecuados para escenarios de control de baja corriente y alta frecuencia.<\/span><\/p>

Suelen utilizarse en circuitos de control de baja corriente, especialmente en los campos de control de equipos automatizados e instrumentos de medida.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Tensi\u00f3n y corriente de conmutaci\u00f3n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Foto\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
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En los circuitos el\u00e9ctricos, los contactores son componentes de uso frecuente que pueden manejar tensiones y corrientes m\u00e1s elevadas que los rel\u00e9s de uso general.<\/span><\/p>

Por lo general, el contactor est\u00e1ndar puede manejar una tensi\u00f3n m\u00e1xima de 690 VCA y su corriente nominal m\u00e1xima puede ser de hasta 300 amperios.<\/span><\/p>

Por el contrario, el rel\u00e9 de uso general suele tener una tensi\u00f3n nominal de hasta 250 V CA, con una capacidad de corriente m\u00e1xima inferior a 10 amperios.<\/span><\/p>

Por lo tanto, la capacidad de conmutaci\u00f3n de tensi\u00f3n e intensidad del contactor es muy superior a la del rel\u00e9.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Precisi\u00f3n y estabilidad<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Tanto los contactores como los rel\u00e9s presentan buena estabilidad y alta precisi\u00f3n cuando se utilizan para controlar cargas con baja tensi\u00f3n y corriente m\u00ednima.<\/span><\/p>

En otras palabras, los dos productos tienen una vida \u00fatil comparable. La vida \u00fatil de un contactor es de aproximadamente 1 mill\u00f3n de maniobras, mientras que la de un rel\u00e9 electromagn\u00e9tico es de unas 100.000 maniobras.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Ruido\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Si ha utilizado estos dos productos anteriormente, comprobar\u00e1 que ambos generan ruido cuando se aplica la se\u00f1al de control y se cierran los contactos.<\/span><\/p>

Aunque hay una ligera diferencia en los niveles de ruido: el contactor es ligeramente m\u00e1s ruidoso que el rel\u00e9 cuando funciona, la diferencia es casi inapreciable.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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M\u00e9todo de control<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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El m\u00e9todo de control del contactor y el rel\u00e9 es el mismo que nuestro <\/span>rel\u00e9 de estado s\u00f3lido<\/span><\/a><\/span>Las se\u00f1ales de control pueden ser de tensi\u00f3n continua o alterna.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\"Rel\u00e9\t\t\t\t\t\t\t\t<\/a>\n\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
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El principio de funcionamiento de ambos es el siguiente: cuando la se\u00f1al de control externa, como 12VDC o 220VAC, se aplica al terminal de control, el contactor o rel\u00e9 puede cerrar el circuito para realizar el control de encendido o apagado de la carga.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Fiabilidad<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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B\u00e1sicamente, no hay diferencia en la fiabilidad de los contactores y los rel\u00e9s.<\/span><\/p>

Cuando la frecuencia de funcionamiento y la corriente de carga de los contactores y rel\u00e9s son elevadas, surgen problemas como el mal contacto, la adherencia de los contactos y las interferencias electromagn\u00e9ticas( c\u00f3mo evitar estas interferencias, lea este art\u00edculo: <\/span>C\u00f3mo reducir las interferencias electromagn\u00e9ticas, los picos de tensi\u00f3n y los arcos voltaicos<\/span><\/a><\/span> ), lo que afectar\u00e1 a la estabilidad y fiabilidad del equipo.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Coste<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Los contactores tienen mayor capacidad de carga que los rel\u00e9s. Sin embargo, esto tambi\u00e9n significa que los contactores suelen tener materiales y procesos de fabricaci\u00f3n m\u00e1s complejos, lo que contribuye a su mayor coste.<\/span><\/p>

En cambio, los rel\u00e9s electromagn\u00e9ticos tienen un coste relativamente bajo. Esto puede atribuirse a su miniaturizaci\u00f3n y a su rendimiento el\u00e9ctrico estable, que puede permitir una producci\u00f3n m\u00e1s eficiente o menores requisitos de material.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Conclusi\u00f3n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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En resumen, un contactor es un tipo de rel\u00e9, tiene las mismas caracter\u00edsticas que el rel\u00e9, pero todav\u00eda hay 10 diferencias clave entre el contactor y el rel\u00e9, pero la principal diferencia es que el contactor puede soportar una tensi\u00f3n m\u00e1s alta y una corriente m\u00e1s grande, con mayor capacidad de carga, pero el precio tambi\u00e9n es m\u00e1s alto.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\"Lorentzzi\t\t\t\t\t\t\t\t<\/a>\n\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
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Como uno de los l\u00edderes en la producci\u00f3n de todo tipo de rel\u00e9s, especialmente <\/span>rel\u00e9s de estado s\u00f3lido<\/span><\/a><\/span>, <\/span>Lorentzzi<\/strong><\/span><\/span><\/a> no s\u00f3lo puede suministrar productos de alta calidad, sino tambi\u00e9n ofrecer soluciones a nuestros clientes. Si est\u00e1 construyendo un proyecto y desea obtener asesoramiento profesional, p\u00f3ngase en contacto con nosotros o env\u00ede sus preguntas a <\/span>shonxu@lorentzzi.com<\/span><\/a>Nuestro equipo le responder\u00e1 en 24 horas.<\/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":"

Today we are going to talk about the 9 differences between contactors and relays. Note that the relays here refer to the electromagnetic relays or general purpose relays we are familiar with. Contactors and relays are two common actuators. Their differences are mainly reflected in appearance, structure, function, application scenarios, switching voltage and current, cost […]<\/p>\n","protected":false},"author":1,"featured_media":17580,"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":"disabled","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","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":"","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":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","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":""}},"footnotes":""},"categories":[117],"tags":[],"class_list":["post-10048","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accessories"],"yoast_head":"\nContactor Vs Relay: 9 Key Differences You Must Know<\/title>\n<meta name=\"description\" content=\"Contactors and relays are two common electrical control devices, there are 10 differences between a contactor and a relay.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lorentzzi.com\/es\/contactor-vs-relay-9-key-differences-you-must-know\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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