{"id":35110,"date":"2026-08-23T11:27:02","date_gmt":"2026-08-23T08:27:02","guid":{"rendered":"https:\/\/qariya.net\/?post_type=product&#038;p=35110"},"modified":"2026-08-23T11:27:32","modified_gmt":"2026-08-23T08:27:32","slug":"relay-12v-dc-20a-4-pin","status":"publish","type":"product","link":"https:\/\/qariya.net\/en\/product\/relay-12v-dc-20a-4-pin\/","title":{"rendered":"Relay 12V DC 20A \u2013 4 Pin"},"content":{"rendered":"<h1>Relay 12V DC 20A \u2013 4 Pin<\/h1>\n<h2>Product Description<\/h2>\n<p>The <strong>12V DC 20A 4-Pin Relay<\/strong> is an electromagnetic switching component designed to control higher-current electrical loads using a low-power 12V control signal. It provides electrical isolation between the control circuit and the switched load, making it useful for controlling motors, lights, fans, pumps, and other electrical devices.<\/p>\n<p>The 4-pin configuration is commonly used for simple <strong>ON\/OFF switching applications<\/strong>, with separate coil terminals and switched contact terminals. Relays of this type are widely used in automotive, electrical, industrial, and DIY applications.<\/p>\n<h2>Key Features<\/h2>\n<ul>\n<li>12V DC coil.<\/li>\n<li>20A maximum contact rating.<\/li>\n<li>4-pin configuration.<\/li>\n<li>Electromagnetic relay design.<\/li>\n<li>Suitable for switching higher-current loads.<\/li>\n<li>Compact and easy to install.<\/li>\n<li>Suitable for automotive and general electrical applications.<\/li>\n<li>Useful for controlling loads from microcontrollers through a suitable driver circuit.<\/li>\n<\/ul>\n<h2>Technical Specifications<\/h2>\n<table>\n<thead>\n<tr>\n<th>Specification<\/th>\n<th>Details<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Product Type<\/td>\n<td>Electromagnetic Relay<\/td>\n<\/tr>\n<tr>\n<td>Coil Voltage<\/td>\n<td>12V DC<\/td>\n<\/tr>\n<tr>\n<td>Contact Rating<\/td>\n<td>Up to 20A<\/td>\n<\/tr>\n<tr>\n<td>Number of Pins<\/td>\n<td>4<\/td>\n<\/tr>\n<tr>\n<td>Switching Type<\/td>\n<td>ON\/OFF<\/td>\n<\/tr>\n<tr>\n<td>Application<\/td>\n<td>Automotive, Electrical &amp; DIY Projects<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Applications<\/h2>\n<ul>\n<li>Automotive electrical systems.<\/li>\n<li>Motor control.<\/li>\n<li>Fan control.<\/li>\n<li>Pump control.<\/li>\n<li>Lighting control.<\/li>\n<li>Power switching.<\/li>\n<li>Industrial control systems.<\/li>\n<li>DIY electronics projects.<\/li>\n<li>Switching electrical loads using control circuits.<\/li>\n<\/ul>\n<h2>How It Works<\/h2>\n<p>When <strong>12V DC<\/strong> is applied to the relay coil, the internal electromagnetic mechanism changes the state of the switching contacts. This allows a low-power control circuit to switch a separate electrical load.<\/p>\n<p>The 4-pin relay configuration is typically used for simple switching, unlike 5-pin relays that provide an additional normally closed contact.<\/p>\n<h2>Important Note<\/h2>\n<p>The <strong>20A rating refers to the relay&#8217;s contact capacity and should not automatically be treated as suitable for every 20A load<\/strong>. The actual allowable current depends on the load type, voltage, switching conditions, and the relay&#8217;s specific contact specifications. Always verify the relay&#8217;s contact diagram and rating before installation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Relay 12V DC 20A \u2013 4 Pin Product Description The 12V DC 20A 4-Pin Relay is an electromagnetic switching component designed to control higher-current electrical loads using a low-power 12V control signal. It provides electrical isolation between the control circuit and the switched load, making it useful for controlling motors, lights, fans, pumps, and other [&hellip;]\n","protected":false},"featured_media":35111,"template":"","meta":[],"product_cat":[210,146],"product_tag":[],"_links":{"self":[{"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/product\/35110"}],"collection":[{"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/media\/35111"}],"wp:attachment":[{"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/media?parent=35110"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/product_cat?post=35110"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/qariya.net\/en\/wp-json\/wp\/v2\/product_tag?post=35110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}