{"id":12466,"date":"2026-06-05T09:30:00","date_gmt":"2026-06-05T07:30:00","guid":{"rendered":"https:\/\/tps-elektronik.com\/?p=12466"},"modified":"2026-04-28T10:09:22","modified_gmt":"2026-04-28T08:09:22","slug":"what-is-tps-3u-chassis-power-integration-and-why-built-in-psu-mounting-and-pdu-compatibility-simplify-your-test-and-measurement-system-setup","status":"publish","type":"post","link":"https:\/\/tps-elektronik.com\/en\/what-is-tps-3u-chassis-power-integration-and-why-built-in-psu-mounting-and-pdu-compatibility-simplify-your-test-and-measurement-system-setup\/","title":{"rendered":"What Is TPS 3U Chassis Power Integration and Why Built-In PSU Mounting and PDU Compatibility Simplify Your Test and Measurement System Setup?"},"content":{"rendered":"<article class=\"product-blog\" lang=\"en\"><header>\n<p>Test and measurement systems demand reliable power integration. System integrators face tight rack space. Procurement teams need compliant, easy\u2011to\u2011build enclosures. A poorly chosen chassis can delay projects and increase cost.<\/p>\n<p>The 3U chassis is a critical platform. It must support PSU mounting and cooling. It must also fit standard 19\u2011inch racks. Missing these features leads to rework and unpredictable integration timelines.<\/p>\n<p>The <a href=\"https:\/\/www.shop-tps.com\/shop\/3u-chassis-27952?category=185#attr=\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><strong>TPS 3U Chassis (Art. BJ9900003)<\/strong><\/a> solves these issues. It provides an ATX power supply mounting area. It aligns with IEC\u202f60297 and EIA\u2011310\u2011D standards. Its 132.5 mm height (3U) and 670.5 mm depth fit full\u2011length cards and EATX motherboards. The design simplifies test rack assembly.<\/p>\n<\/header><nav class=\"toc\" aria-label=\"Table of Contents\">\n<h2 id=\"toc-en\">Table of Contents<\/h2>\n<ol>\n<li><a href=\"#en-design\">Chassis Architecture, Material Construction, and 3U Specification<\/a><\/li>\n<li><a href=\"#en-power\">Built\u2011In PSU Mounting and Redundant Power Options<\/a><\/li>\n<li><a href=\"#en-pdu\">PDU Compatibility and Rack Power Management<\/a><\/li>\n<li><a href=\"#en-cooling\">Cooling Design and Thermal Strategy<\/a><\/li>\n<li><a href=\"#en-compliance\">IEC\u202f60297\u20113\u2011100 and EIA\u2011310\u2011D Compliance<\/a><\/li>\n<li><a href=\"#en-app\">Application Scenarios for Test, Control, and Data Center<\/a><\/li>\n<li><a href=\"#en-rfq\">RFQ Checklist for Integrators and Procurement<\/a><\/li>\n<li><a href=\"#en-faq\">Frequently Asked Questions<\/a><\/li>\n<\/ol>\n<\/nav>\n<section>\n<h2 id=\"en-design\">Chassis Architecture, Material Construction, and 3U Specification<\/h2>\n<p>The TPS 3U Chassis (BJ9900003) is a 19\u2011inch rack mount enclosure. Its dimensions are 482.6\u202fmm wide by 670.5\u202fmm deep. The panel stands 132.5\u202fmm high. This matches exactly three rack units.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-12492\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/04\/TPS-3U-Chassis-Front-Isometric-View-\u2013-IEC-60297-Rack-Mount-ATX-Power-Supply-Enclosure-1.jpg\" alt=\"TPS 3U Chassis Front Isometric View \u2013 IEC 60297 Rack Mount ATX Power Supply Enclosure TPS 3U-Chassis Frontansicht \u2013 IEC 60297 Rack-Montage ATX-Netzteilgeh\u00e4use\" width=\"1920\" height=\"1216\" \/><\/p>\n<p>This height allows a full ATX PSU next to a standard motherboard. No internal conflicts occur. The chassis uses multiple materials for strength and weight. Sheet steel forms the frame. Aluminum panels reduce the overall mass. Galvanized plate resists corrosion inside.<\/p>\n<p>The standard finish is powder\u2011coated RAL\u202f7035 (light gray). Front and side panels get this treatment. The rear plate comes in powder\u2011coated or nickel\u2011coated options. A colorless\u2011oxidized front handle provides a clean grip. These materials handle heavy cards and drives without bending.<\/p>\n<p>Mounting dimensions follow the 19\u2011inch standard. Horizontal hole spacing (W2) is 465\u202fmm. Vertical spacing (H2) is 57.2\u202fmm. This aligns to the 3U pattern. The chassis slides into compliant racks without adapters. For other heights, TPS offers <a href=\"https:\/\/www.shop-tps.com\/shop\/1u-chassis-27950?category=185#attr=\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">1U<\/a>, <a href=\"https:\/\/www.shop-tps.com\/shop\/2u-chassis-27951?category=185#attr=\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">2U<\/a>, <a href=\"https:\/\/www.shop-tps.com\/shop\/4u-chassis-27953?category=185#attr=\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">4U<\/a>, and <a href=\"https:\/\/www.shop-tps.com\/shop\/6u-chassis-27954?category=185#attr=\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">6U<\/a> models.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-power\">Built\u2011In PSU Mounting and Redundant Power Options<\/h2>\n<p>Power supply integration often causes project delays. Custom brackets are frequently needed. The TPS 3U chassis eliminates that step. It has dedicated ATX PSU mounting points near the rear.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-12487\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/04\/3U-Chassis-Power-Supply-Integration-ATX-PSU-Mounting-Diagram-2.jpg\" alt=\"3U Chassis Power Supply Integration ATX PSU Mounting Diagram 3U-Chassis Netzteilintegration ATX-PSU-Montagediagramm\" width=\"1920\" height=\"1078\" \/><\/p>\n<p>The layout supports ATX, MicroATX, and EATX boards. A standard ATX supply fits directly. Procurement can choose wattage from 400\u202fW to over 1\u202f000\u202fW. Redundant 1+1 PSU configurations also work. The internal depth leaves room for cables. Airflow stays open and predictable.<\/p>\n<p>PSU swaps happen without removing other rack gear. That speeds maintenance tasks. The tool\u2011less design helps further. Power cables route through side channels. They are kept away from data cables. This reduces EMI in measurement systems.<\/p>\n<p>See the complete <a href=\"https:\/\/www.shop-tps.com\/shop\/category\/mechanical-products-19-chassis-185\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS 19\u2011inch chassis category<\/a> for power integration options.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-pdu\">PDU Compatibility and Rack Power Management<\/h2>\n<p>Multiple chassis in a rack share power. A rack PDU distributes that power. The 3U chassis must fit alongside these units. Its 482.6\u202fmm width ensures compatibility. Horizontal and vertical PDUs both work.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-12482\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/04\/3U-Chassis-PDU-Compatibility-Rack-Power-Distribution-Integration-3.jpg\" alt=\"3U Chassis PDU Compatibility Rack Power Distribution Integration 3U-Chassis PDU-Kompatibilit\u00e4t Rack-Stromverteilungsintegration\" width=\"1920\" height=\"979\" \/><\/p>\n<p>Rear panel cutouts provide cord exit space. C13 and C19 cables connect easily. They do not block adjacent equipment. Vertical 0U PDUs mount in rear channels. This setup delivers clean power to each chassis. Power budgeting becomes simpler. A single PDU serves the whole stack.<\/p>\n<p>Visit the <a href=\"https:\/\/www.shop-tps.com\/shop\/category\/mechanical-products-19-chassis-185\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">full chassis family<\/a> to plan multi\u2011chassis power architecture.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-cooling\">Cooling Design and Thermal Strategy<\/h2>\n<p>Heat reduces measurement accuracy. Hotspots cause drift and early failures. The TPS 3U chassis addresses this with high airflow design. Air moves front\u2011to\u2011rear without obstruction.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-12472\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/04\/3U-Chassis-Cooling-Airflow-Design-Thermal-Management-Server-Rack-4.jpg\" alt=\"3U Chassis Cooling Airflow Design Thermal Management Server Rack 3U-Chassis K\u00fchlungsluftstromdesign Thermomanagement Server-Rack\" width=\"1920\" height=\"1078\" \/><\/p>\n<p>The 132.5\u202fmm height allows 80\u202fmm or 120\u202fmm fans. Fans can mount inside or in the PSU. Cool air enters via the front panel. It flows over the motherboard and cards. Warm air exhausts through the rear. Aluminum panels also shed heat passively.<\/p>\n<p>A typical spec is a 10\u201315\u202f\u00b0C rise above ambient. This chassis supports that with proper fan choice. Ask for detailed airflow data during RFQ. Cooling depends on the specific configuration.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-compliance\">IEC\u202f60297\u20113\u2011100 and EIA\u2011310\u2011D Compliance<\/h2>\n<h3 id=\"en-iec\">IEC\u202f60297\u20113\u2011100 \u2013 International Mechanical Standard<\/h3>\n<p>This standard defines the 482.6\u202fmm (19\u202fin) series dimensions. For a 3U chassis, panel height is 132.5\u202fmm. Horizontal hole spacing (W2) is 465\u202fmm. Vertical spacing (H2) is 57.2\u202fmm. These three numbers ensure interchangeability. Any compliant chassis fits any standard rack.<\/p>\n<h3 id=\"en-eia\">EIA\u2011310\u2011D \u2013 North American Standard<\/h3>\n<p>EIA\u2011310\u2011D defines the 1U = 1.75-inch unit. The hole pattern alternates at 0.625\u20110.625\u20110.5 inches. Horizontal rail spacing is 18.312 inches (465.1\u202fmm). This matches typical U.S. data center racks.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-12477\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/04\/IEC-60297-3-100-and-EIA-310-D-3U-Rack-Mount-Chassis-Dimensions-Infographic-5.jpg\" alt=\"IEC 60297-3-100 and EIA-310-D 3U Rack Mount Chassis Dimensions Infographic IEC 60297-3-100 und EIA-310-D 3U Rack-Montage-Chassis Abmessungen Infografik\" width=\"1920\" height=\"1078\" \/><\/p>\n<p>The TPS 3U chassis meets both standards. It carries CE and RoHS marks. Documentation is available on the product page. For UK projects, UKCA marking exists on related models. Refer to <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/69308\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">IEC 62368-1<\/a> and <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/22046\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">CISPR 32<\/a> for safety and EMC context.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-app\">Application Scenarios for Test, Control, and Data Center<\/h2>\n<h3>Test and Measurement Rack<\/h3>\n<p>The 3U size is standard for PXI and PXIe platforms. The chassis holds PXI controllers and modular instruments. A built\u2011in ATX PSU powers the backplane cleanly. Multiple 3U units stack in automated test racks. One PDU serves them all.<\/p>\n<h3>Industrial Control and DAQ<\/h3>\n<p>In factories, the chassis acts as a control enclosure. It houses industrial boards and DAQ cards. The steel\u2011aluminum build handles vibration. RAL\u202f7035 coating resists coolants. Front\u2011accessible handles simplify maintenance tasks.<\/p>\n<h3>Edge and Data Center Node<\/h3>\n<p>The 3U height fits server\u2011grade boards. Hot\u2011swap bays come in 8 or 12 bay options. Redundant PSUs ensure uptime. A nickel\u2011coated rear plate improves shielding.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-rfq\">RFQ Checklist for Integrators and Procurement<\/h2>\n<ul>\n<li>SKU: <strong>TPS 3U Chassis BJ9900003<\/strong><\/li>\n<li>Motherboard form factor (ATX, MicroATX, EATX)<\/li>\n<li>PSU type and wattage (standard or 1+1 redundant)<\/li>\n<li>Expansion card count and type<\/li>\n<li>Drive bay configuration (8 or 12 bay)<\/li>\n<li>Surface color (RAL\u202f7035 or custom)<\/li>\n<li>Rear plate finish (powder\u2011coated or nickel)<\/li>\n<li>Certifications needed (CE, RoHS, UKCA)<\/li>\n<li>CAD\/STEP model format<\/li>\n<li>Rack layout (single or multi\u2011chassis)<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.shop-tps.com\/shop\/3u-chassis-27952?category=185#attr=\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><strong>Request a quote for TPS 3U Chassis \u2192<\/strong><\/a><\/p>\n<\/section>\n<section>\n<h2 id=\"en-faq\">Frequently Asked Questions<\/h2>\n<p><strong>Does the chassis include a power supply?<\/strong><br \/>No, the chassis is a structural enclosure. You select and install the PSU separately.<\/p>\n<p><strong>Is it compliant with IEC\u202f60297 and EIA\u2011310\u2011D?<\/strong><br \/>Yes. Dimensions (482.6\u202fmm wide, 132.5\u202fmm high) conform to both standards. Mounting hole spacing matches W2 465\u202fmm and H2 57.2\u202fmm.<\/p>\n<p><strong>What motherboard sizes fit?<\/strong><br \/>ATX, MicroATX, and EATX boards fit inside. The depth is 670.5\u202fmm.<\/p>\n<p><strong>Can redundant PSUs be mounted?<\/strong><br \/>Yes, the chassis supports 1+1 redundant ATX configurations.<\/p>\n<p><strong>What certifications are standard?<\/strong><br \/>CE and RoHS come standard. UKCA is available on related models.<\/p>\n<p><strong>Where can I compare all U\u2011height options?<\/strong><br \/>Visit the <a href=\"https:\/\/www.shop-tps.com\/shop\/category\/mechanical-products-19-chassis-185\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">19\u2011inch chassis category<\/a> for 1U through 6U.<\/p>\n<\/section>\n<footer style=\"background: #2d5797; padding: 30px; border-radius: 14px; margin-top: 40px;\">\n<p style=\"color: #ffffff; font-size: 16px; line-height: 1.6; margin: 0;\"><strong>Next step:<\/strong> Build your test rack on a proven 3U platform. <a style=\"color: #ffffff; font-weight: 600; text-decoration: underline; display: block; margin-top: 10px;\" href=\"https:\/\/www.shop-tps.com\/shop\/3u-chassis-27952?category=185#attr=\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS 3U Chassis BJ9900003 \u2014 Request Quote \u2192<\/a><\/p>\n<\/footer><\/article>\n\n<style 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-->","protected":false},"excerpt":{"rendered":"<p>Test and measurement systems demand reliable power integration. System integrators face tight rack space. Procurement teams need compliant, easy\u2011to\u2011build enclosures. A poorly chosen chassis can delay projects and increase cost. The 3U chassis is a critical platform. It must support PSU mounting and cooling. It must also fit standard 19\u2011inch racks. Missing these features leads\u2026 <a href=\"https:\/\/tps-elektronik.com\/en\/what-is-tps-3u-chassis-power-integration-and-why-built-in-psu-mounting-and-pdu-compatibility-simplify-your-test-and-measurement-system-setup\/\">Read More &raquo;<\/a><\/p>\n","protected":false},"author":9,"featured_media":12492,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[53],"tags":[],"class_list":["post-12466","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-production"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is TPS 3U Chassis Power Integration and Why Built-In PSU Mounting and PDU Compatibility Simplify Your Test and Measurement System Setup? - TPS<\/title>\n<meta name=\"description\" content=\"Simplify test system builds with TPS 3U chassis. 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