{"id":8385,"date":"2026-10-25T15:03:26","date_gmt":"2026-10-25T15:03:26","guid":{"rendered":"https:\/\/www.rendatsp.com\/product\/siemens-3rw3028-1bb04-sirius-3rw30-soft-starter-38-a-18-5-kw-400-v-200-480-v-ac-control-24-v-ac-dc-size-s0\/"},"modified":"2026-10-25T15:03:26","modified_gmt":"2026-10-25T15:03:26","slug":"siemens-3rw3028-1bb04-sirius-3rw30-soft-starter-38-a-18-5-kw-400-v-200-480-v-ac-control-24-v-ac-dc-size-s0","status":"publish","type":"product","link":"https:\/\/www.rendatsp.com\/ar\/product\/siemens-3rw3028-1bb04-sirius-3rw30-soft-starter-38-a-18-5-kw-400-v-200-480-v-ac-control-24-v-ac-dc-size-s0\/","title":{"rendered":"Siemens 3RW3028-1BB04 SIRIUS 3RW30 Soft Starter 38 A, 18.5 kW\/400 V, 200-480 V AC, Control 24 V AC\/DC (Size S0)"},"content":{"rendered":"<p>Order number 3RW3028-1BB04 is a genuine Siemens part from the SIRIUS 3RW soft starters range. Official description: SIRIUS soft starter S0 38 A, 18.5 kW\/400 V, 40 \u00b0C 200-480 V AC, 24 V AC\/DC Screw terminals.<\/p>\n<p>SIRIUS 3RW soft starters ramp the motor voltage up and down so that pumps, fans, compressors and conveyors start without the current peak and mechanical shock of a direct-on-line start.<\/p>\n<p>See our <a href=\"https:\/\/www.rendatsp.com\/ar\/product-category\/siemens\/\">Siemens range<\/a>.<\/p>\n<h3>Technical data<\/h3>\n<table>\n<tbody>\n<tr>\n<th>Siemens order number<\/th>\n<td>3RW3028-1BB04<\/td>\n<\/tr>\n<tr>\n<th>Ambient temperature (operation)<\/th>\n<td>-25 &#8230; +60 \u00b0C<\/td>\n<\/tr>\n<tr>\n<th>Dimensions (W x H x D)<\/th>\n<td>45 x 125 x 150 mm<\/td>\n<\/tr>\n<tr>\n<th>Condition<\/th>\n<td>New, original Siemens<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Key features (per Siemens)<\/h3>\n<ul>\n<li>SIRIUS soft starter S0 38 A<\/li>\n<li>18.5 kW\/400 V<\/li>\n<li>40 \u00b0C 200-480 V AC<\/li>\n<li>24 V AC\/DC Screw terminals<\/li>\n<\/ul>\n<h3>Typical applications<\/h3>\n<ul>\n<li>Compressors<\/li>\n<li>Pumps and fans<\/li>\n<li>Conveyor belts<\/li>\n<li>Replacing a star-delta starter<\/li>\n<li>Replacing a failed soft starter<\/li>\n<\/ul>\n<h3>Compatibility and replacement<\/h3>\n<p>Compare the rated current, motor power, control supply voltage and connection type (screw or spring-loaded) with the old soft starter; the Siemens data sheet above gives the exact values.<\/p>\n<h3>Before you replace it<\/h3>\n<ul>\n<li>Look for signs of overvoltage, water or heat damage in the cabinet so the new part does not fail for the same reason.<\/li>\n<li>Check the supply voltage and wiring of the old unit before installing the new one.<\/li>\n<li>Check the mounting (DIN rail or screw fixing) and the terminal type (screw or spring-loaded) of the old unit.<\/li>\n<\/ul>\n<h3>Frequently asked questions<\/h3>\n<h4>Can it reduce the starting current?<\/h4>\n<p>Yes. Soft starters limit the inrush current by ramping the voltage; the achievable reduction depends on the load and the settings.<\/p>\n<h4>Does it need an overload relay?<\/h4>\n<p>That depends on the model: check the protective functions listed in the Siemens data sheet, and add a 3RU2 overload relay or 3RV2 breaker where motor protection is not integrated.<\/p>\n<h4>Is it new and original?<\/h4>\n<p>Yes. We supply new, original parts in the manufacturer packaging, with a 1-year warranty.<\/p>\n<h4>Do you supply larger quantities for projects?<\/h4>\n<p>Yes. For panel builders and plant projects we quote complete lists; send the bill of materials on WhatsApp or through the inquiry form.<\/p>\n<h4>Can I get a price and delivery time?<\/h4>\n<p>Prices are quoted on request. Send the order number, quantity and delivery country on WhatsApp and we will reply with price and delivery time; air shipping is usually 5 to 7 days once ready, with a 1-year warranty.<\/p>\n<h3>Before you order<\/h3>\n<p>Compare the complete order number on the old unit with this page, including the suffix: in most ranges the last characters set the coil voltage, current range or version. If the label is worn, send us a photo and we will identify the part.<\/p>\n<p>Need it fast? Send the order number, quantity and delivery country on WhatsApp or through the inquiry form and we reply with a quotation the same working day. All parts are new and original, covered by a 1-year warranty, and ship worldwide by air in 5 to 7 days once ready (<a href=\"https:\/\/www.rendatsp.com\/ar\/shipping-payment-warranty\/\">shipping, payment and warranty<\/a>). Local agents: Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.<\/p>","protected":false},"excerpt":{"rendered":"<p>Genuine Siemens 3RW3028-1BB04: SIRIUS soft starter S0 38 A, 18.5 kW\/400 V, 40 \u00b0C 200-480 V AC, 24 V AC\/DC Screw terminals. New original Siemens, supplied by RendatSP with worldwide shipping.<\/p>","protected":false},"featured_media":8150,"template":"","meta":{"_monsterinsights_skip_tracking":false,"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":"default","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 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":""}}},"product_brand":[137],"product_cat":[43,382],"product_tag":[],"class_list":["post-8385","product","type-product","status-publish","has-post-thumbnail","product_brand-siemens","product_cat-siemens","product_cat-sirius-3rw-soft-starters","desktop-align-center","tablet-align-left","mobile-align-left","first","instock","taxable","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.rendatsp.com\/ar\/wp-json\/wp\/v2\/product\/8385","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rendatsp.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.rendatsp.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rendatsp.com\/ar\/wp-json\/wp\/v2\/media\/8150"}],"wp:attachment":[{"href":"https:\/\/www.rendatsp.com\/ar\/wp-json\/wp\/v2\/media?parent=8385"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.rendatsp.com\/ar\/wp-json\/wp\/v2\/product_brand?post=8385"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.rendatsp.com\/ar\/wp-json\/wp\/v2\/product_cat?post=8385"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.rendatsp.com\/ar\/wp-json\/wp\/v2\/product_tag?post=8385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}