{"id":1301,"date":"2026-07-25T01:00:00","date_gmt":"2026-07-25T01:00:00","guid":{"rendered":"https:\/\/mordio.com\/?p=1301"},"modified":"2026-07-17T09:22:01","modified_gmt":"2026-07-17T09:22:01","slug":"spst-spdt-dpst-dpdt-switch-differences","status":"publish","type":"post","link":"https:\/\/mordio.com\/fr\/spst-spdt-dpst-dpdt-switch-differences\/","title":{"rendered":"La diff\u00e9rence entre les interrupteurs SPST, SPDT, DPST et DPDT"},"content":{"rendered":"<p>Lors de la conception ou de la maintenance de syst\u00e8mes \u00e9lectriques, il est essentiel de comprendre les configurations des interrupteurs. Les termes SPST, SPDT, DPST et DPDT d\u00e9crivent combien de circuits un interrupteur peut contr\u00f4ler et combien de positions il poss\u00e8de. Cet article explique chaque type, fournit des applications typiques et propose des conseils pour choisir l'interrupteur adapt\u00e9 \u00e0 votre projet. Suivez toujours les codes \u00e9lectriques locaux et consultez un \u00e9lectricien qualifi\u00e9 pour les installations.<\/p>\n<h2>Que signifient p\u00f4le et direction ?<\/h2>\n<p>Before diving into specific switch types, it helps to understand the terms &#8216;pole&#8217; and &#8216;throw.&#8217; The pole refers to the number of separate circuits that a switch can control. A single-pole switch controls one circuit, while a double-pole switch controls two independent circuits simultaneously. The throw indicates the number of positions that connect the pole to an output. A single-throw switch has one &#8216;on&#8217; position, whereas a double-throw switch has two (e.g., connecting to either output A or output B).<\/p>\n<p>For example, a simple light switch in a home is typically a single-pole, single-throw (SPST) switch: it controls one circuit and has one &#8216;on&#8217; position. In contrast, a three-way switch used in staircases is a single-pole, double-throw (SPDT) switch, allowing a light to be controlled from two locations.<\/p>\n<h2>Interrupteur SPST : commande marche\/arr\u00eat simple<\/h2>\n<p>Un interrupteur SPST (unipolaire unidirectionnel) est le type le plus basique. Il poss\u00e8de deux bornes : une pour l'alimentation entrante et une pour la charge sortante. Lorsque l'interrupteur est ferm\u00e9 (marche), le circuit est complet ; lorsqu'il est ouvert (arr\u00eat), le circuit est coup\u00e9. Les interrupteurs SPST sont couramment utilis\u00e9s pour la commande marche\/arr\u00eat simple de lumi\u00e8res, de ventilateurs et de petits appareils.<\/p>\n<p>Dans les environnements industriels, les interrupteurs SPST sont souvent utilis\u00e9s comme interrupteurs de fin de course ou boutons d'arr\u00eat d'urgence. On les trouve \u00e9galement dans les panneaux de commande pour la signalisation. Par exemple, un interrupteur mural SPST MORDIO peut commander un seul luminaire dans un couloir ou un bureau. Ces interrupteurs sont compacts, fiables et \u00e9conomiques pour les besoins de commutation de base.<\/p>\n<h2>Interrupteur SPDT : commande depuis deux endroits<\/h2>\n<p>Un interrupteur SPDT (unipolaire bidirectionnel) poss\u00e8de trois bornes : un p\u00f4le commun et deux directions (souvent marqu\u00e9es NO et NF pour normalement ouvert et normalement ferm\u00e9). La borne commune peut se connecter \u00e0 l'une ou l'autre des deux directions, permettant \u00e0 l'interrupteur d'acheminer l'alimentation vers l'une des deux sorties. Cela rend les interrupteurs SPDT id\u00e9aux pour des applications comme les circuits d'\u00e9clairage \u00e0 trois voies, o\u00f9 l'on souhaite commander une lumi\u00e8re depuis deux interrupteurs distincts.<\/p>\n<p>Une autre utilisation courante est dans les s\u00e9lecteurs pour sources d'alimentation doubles ou pour commuter entre deux signaux. Par exemple, un interrupteur SPDT peut s\u00e9lectionner entre une alimentation principale et une alimentation de secours. Dans les \u00e9quipements audio, les interrupteurs SPDT sont utilis\u00e9s pour la s\u00e9lection d'entr\u00e9e. MORDIO propose des interrupteurs SPDT adapt\u00e9s aux applications r\u00e9sidentielles et commerciales, r\u00e9pondant aux normes de s\u00e9curit\u00e9 pertinentes telles que CEI et CE.<\/p>\n<h2>Interrupteur DPST : commande simultan\u00e9e de deux circuits<\/h2>\n<p>Un interrupteur DPST (bipolaire unidirectionnel) poss\u00e8de quatre bornes : deux p\u00f4les et deux directions, mais les deux directions sont connect\u00e9es en interne de sorte que les deux circuits sont allum\u00e9s ou \u00e9teints ensemble. Ce type d'interrupteur est utilis\u00e9 lorsque vous devez d\u00e9connecter simultan\u00e9ment les fils de phase et de neutre d'un circuit 120 V ou 230 V pour des raisons de s\u00e9curit\u00e9, ou pour contr\u00f4ler deux charges distinctes avec une seule action.<\/p>\n<p>Les applications typiques incluent la commutation d'un appareil 240 V comme un chauffe-eau ou un climatiseur, o\u00f9 les deux lignes doivent \u00eatre interrompues. Les interrupteurs DPST sont \u00e9galement utilis\u00e9s dans les machines industrielles pour isoler deux lignes d'alimentation. Dans une maison, un interrupteur DPST pourrait commander ensemble un ventilateur de salle de bain et une lumi\u00e8re. Lors du choix d'un interrupteur DPST, assurez-vous qu'il est adapt\u00e9 \u00e0 la tension et au courant de votre application. Les interrupteurs DPST MORDIO sont conformes aux normes internationales et con\u00e7us pour une fiabilit\u00e9 \u00e0 long terme.<\/p>\n<h2>Interrupteur DPDT : commande polyvalente pour circuits complexes<\/h2>\n<p>Un interrupteur DPDT (bipolaire bidirectionnel) poss\u00e8de six bornes : deux p\u00f4les et deux directions pour chaque p\u00f4le, permettant une commutation ind\u00e9pendante de deux circuits entre deux positions. Cette configuration est extr\u00eamement polyvalente. Elle peut \u00eatre utilis\u00e9e pour inverser la polarit\u00e9 d'un moteur (par exemple, pour une commande avant\/arri\u00e8re d'un moteur \u00e0 courant continu), pour commuter entre deux sources d'alimentation diff\u00e9rentes pour deux charges, ou pour modifier la configuration de c\u00e2blage d'un appareil.<\/p>\n<p>Dans les syst\u00e8mes audio, les interrupteurs DPDT sont utilis\u00e9s pour l'inversion de phase ou pour s\u00e9lectionner entre les modes st\u00e9r\u00e9o et mono. Dans les \u00e9quipements de laboratoire, ils permettent une reconfiguration rapide des circuits de test. Pour les applications critiques pour la s\u00e9curit\u00e9, les interrupteurs DPDT peuvent fournir une redondance en commutant \u00e0 la fois les fils de phase et de neutre de deux circuits s\u00e9par\u00e9s. Les interrupteurs DPDT MORDIO sont con\u00e7us pour supporter des courants \u00e9lev\u00e9s et sont test\u00e9s pour leur durabilit\u00e9 dans des environnements exigeants.<\/p>\n<h2>Comment choisir le bon type d'interrupteur<\/h2>\n<p>La s\u00e9lection de l'interrupteur correct d\u00e9pend des exigences de votre circuit. Consid\u00e9rez les facteurs suivants :<\/p>\n<ul>\n<li>Nombre de circuits \u00e0 contr\u00f4ler : utilisez SP pour un circuit, DP pour deux circuits ind\u00e9pendants.<\/li>\n<li>Nombre de positions n\u00e9cessaires : unidirectionnel pour marche\/arr\u00eat, bidirectionnel pour s\u00e9lectionner entre deux sorties.<\/li>\n<li>Tensions et courants nominaux : assurez-vous que la valeur nominale de l'interrupteur d\u00e9passe la charge maximale.<\/li>\n<li>Environnement d'application : pour les emplacements humides ou ext\u00e9rieurs, choisissez des interrupteurs avec des indices de protection IP appropri\u00e9s.<\/li>\n<li>Exigences de certification : recherchez des interrupteurs conformes aux normes locales telles que BS 1363, CEI, CE ou UL.<\/li>\n<\/ul>\n<p>Par exemple, un simple interrupteur d'\u00e9clairage dans un espace int\u00e9rieur sec peut \u00eatre un interrupteur SPST. Si vous devez commander une lumi\u00e8re depuis deux endroits, utilisez des interrupteurs SPDT aux deux extr\u00e9mit\u00e9s. Pour un appareil 240 V, un interrupteur DPST est plus s\u00fbr. Pour l'inversion de moteur, un interrupteur DPDT est le choix standard.<\/p>\n<p>MORDIO fournit des interrupteurs muraux et des prises pour les march\u00e9s de style britannique, europ\u00e9en et am\u00e9ricain et soutient les discussions OEM\/ODM. Les acheteurs doivent confirmer les sp\u00e9cifications exactes du produit, la certification applicable, la documentation de test, le MOQ et le d\u00e9lai de livraison pour chaque projet avec l'\u00e9quipe MORDIO avant de commander.<\/p>\n<h2>Erreurs courantes et consid\u00e9rations de s\u00e9curit\u00e9<\/h2>\n<p>One common mistake is using an SPST switch where a DPST is required for safety, such as on a 240V circuit. Another is using a switch with insufficient current rating, leading to overheating and failure. Always verify the switch&#8217;s electrical ratings and follow manufacturer specifications. When installing switches, ensure proper wire gauge and secure connections.<\/p>\n<p>La s\u00e9curit\u00e9 doit toujours \u00eatre une priorit\u00e9. Coupez l'alimentation au disjoncteur avant de travailler sur tout c\u00e2blage \u00e9lectrique. Utilisez un testeur de tension pour confirmer que le circuit est hors tension. Si vous n'\u00eates pas s\u00fbr d'une \u00e9tape, consultez un \u00e9lectricien qualifi\u00e9. Les interrupteurs MORDIO sont con\u00e7us avec la s\u00e9curit\u00e9 \u00e0 l'esprit, mais une installation correcte est essentielle pour pr\u00e9venir les risques.<\/p>\n<h2>Conclusion<\/h2>\n<p>Comprendre les interrupteurs SPST, SPDT, DPST et DPDT vous aide \u00e0 s\u00e9lectionner le composant adapt\u00e9 \u00e0 votre projet \u00e9lectrique. Chaque type sert un objectif sp\u00e9cifique, du simple contr\u00f4le marche\/arr\u00eat au routage de circuit complexe. En faisant correspondre la configuration de l'interrupteur \u00e0 votre application et en respectant les normes de s\u00e9curit\u00e9, vous pouvez garantir un fonctionnement fiable et s\u00fbr.<\/p>\n<p>Explore <a href=\"https:\/\/mordio.com\/fr\/\">MORDIO wall switch and socket solutions<\/a>, ou <a href=\"https:\/\/mordio.com\/fr\/contact\/\">contact the team<\/a> to discuss specifications, samples, documentation, MOQ, and lead times for your market.<\/p>","protected":false},"excerpt":{"rendered":"<p>When designing or maintaining electrical systems, understanding switch configurations is essential. Terms like SPST, SPDT, DPST, and DPDT describe how many circuits a switch can control and how many positions it has. This article explains each type, provides typical applications, and offers guidance on selecting the right switch for your project. Always follow local electrical [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1087,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[1164,1163,1113,1162,1161,1160],"class_list":["post-1301","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-dpdt","tag-dpst","tag-electrical-engineering","tag-spdt","tag-spst","tag-switch-types"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SPST SPDT DPST DPDT Switch Differences Explained<\/title>\n<meta name=\"description\" content=\"Learn the difference between SPST, SPDT, DPST, and DPDT switches. Understand pole and throw configurations with applications and selection tips.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mordio.com\/fr\/spst-spdt-dpst-dpdt-switch-differences\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SPST SPDT DPST DPDT Switch Differences Explained\" \/>\n<meta property=\"og:description\" content=\"Learn the difference between SPST, SPDT, DPST, and DPDT switches. 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