{"id":15264,"date":"2026-07-31T05:00:00","date_gmt":"2026-07-31T03:00:00","guid":{"rendered":"https:\/\/tps-elektronik.com\/?p=15264"},"modified":"2026-07-31T03:53:16","modified_gmt":"2026-07-31T01:53:16","slug":"what-is-tps-48v-open-frame-power-supply-for-industrial-automation-and-control-systems-and-why-it-is-essential-for-reliable-machine-and-factory-operation","status":"publish","type":"post","link":"https:\/\/tps-elektronik.com\/en\/what-is-tps-48v-open-frame-power-supply-for-industrial-automation-and-control-systems-and-why-it-is-essential-for-reliable-machine-and-factory-operation\/","title":{"rendered":"What Is TPS 48V Open Frame Power Supply for Industrial Automation and Control Systems and Why It Is Essential for Reliable Machine and Factory Operation?"},"content":{"rendered":"<article class=\"product-blog\" lang=\"en\"><header>\n<p>For system integrators, panel builders, and engineering\u2011driven procurement teams, selecting a power supply is not only about wattage. It also involves thermal margins, EMC behavior, safety documentation. And whether the system passes acceptance testing without rework. In the world of industrial automation, where 48\u202fV DC is increasingly used for distributed power architectures, motor drives. And high\u2011power sensors, the power source must be as compact and rugged as the equipment it powers.<\/p>\n<p>The <a href=\"https:\/\/www.shop-tps.com\/shop\/category\/power-supply-open-frame-enclosed-8\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><strong>TPS 48V Open Frame Power Supply<\/strong><\/a>, based on the MPT120S-48V platform, engineered precisely for this environment. It is a compact, PCB\u2011mount AC\/DC converter that delivers a regulated 48\u202fV DC output with 3000\u202fVAC isolation. All within a footprint of just 126\u202f\u00d7\u202f62\u202f\u00d7\u202f35\u202fmm. Designed for seamless integration into larger control cabinets, machinery, and factory automation systems. It provides the safe, efficient, and reliable power that 24\/7 industrial operations demand.<\/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-why-48v\">Why 48V DC is the rising standard for distributed industrial power<\/a><\/li>\n<li><a href=\"#en-range\">Introducing the TPS-MPT120S-48V: a high-voltage input, compact power module<\/a><\/li>\n<li><a href=\"#en-electrical\">Electrical performance: wide input, high efficiency, and adjustable output<\/a><\/li>\n<li><a href=\"#en-protection\">Protection functions for harsh industrial environments<\/a><\/li>\n<li><a href=\"#en-mechanical\">Mechanical integration: open\u2011frame design, mounting, and cooling<\/a><\/li>\n<li><a href=\"#en-compliance\">Compliance and safety: IEC\u202f62368\u20111, EMC, and 3000\u202fVAC isolation<\/a><\/li>\n<li><a href=\"#en-applications\">Application guidance for factory automation and motor drives<\/a><\/li>\n<li><a href=\"#en-rfq\">RFQ checklist for 48V open frame power supplies<\/a><\/li>\n<li><a href=\"#en-faq\">Frequently Asked Questions<\/a><\/li>\n<\/ol>\n<\/nav>\n<section>\n<h2 id=\"en-why-48v\">Why 48V DC is the rising standard for distributed industrial power<\/h2>\n<p>While 24\u202fV DC has long been the dominant control voltage in factory automation, the trend is rapidly shifting towards 48\u202fV. The reason is simple physics: for the same power, a 48\u202fV system requires only half the current of a 24\u202fV system. This dramatic reduction in current (I = P\/V) leads to significantly lower I\u00b2R losses in cabling. Which allowing for smaller wire gauges and longer cable runs between cabinets. This makes 48\u202fV ideal for powering high\u2011power actuators, integrated servo drives. And Power\u2011over\u2011Ethernet (PoE++) devices that require more than the 30\u202fW provided by 24\u202fV systems.<\/p>\n<p>A dedicated <strong>industrial 48V open frame power supply<\/strong> is the most efficient way to generate this voltage directly from the AC mains. Integrating such a supply directly onto the main control board eliminates the need for a separate DIN\u2011rail unit, saving space, reducing wiring complexity, and improving system reliability. This is the foundation of modern, decentralized factory automation. For a broader look at how such integration fits into overall manufacturing, see the <a href=\"https:\/\/www.shop-tps.com\/shop\/category\/power-supply-open-frame-enclosed-8\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS open frame and enclosed power supply category<\/a>.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-range\">Introducing the TPS-MPT120S-48V: a high-voltage input, compact power module<\/h2>\n<p>The <a href=\"https:\/\/www.shop-tps.com\/shop\/category\/power-supply-open-frame-enclosed-8\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><strong>TPS-MPT120S-48V<\/strong><\/a> is a 120\u202fW, single\u2011output open\u2011frame AC\/DC power supply. It is a critical member of the TPS High Voltage Series. Which designed to operate directly from the high\u2011voltage AC mains common in industrial environments. Its defining feature is an exceptionally wide input range of 176\u2013500\u202fV AC. Which meaning it can connected directly to a single\u2011phase of a 208\u202fV, 400\u202fV. Or even 480\u202fV supply without the need for a step\u2011down transformer. This simplifies global inventory for OEMs, as a single part number can deployed across different regional grid voltages.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-15329\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/0731-TPS-MPT120S-48V-open-frame-power-supply-1.png\" alt=\"TPS-MPT120S-48V-open frame power supply\" width=\"1024\" height=\"683\" srcset=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/0731-TPS-MPT120S-48V-open-frame-power-supply-1.png 1024w, https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/0731-TPS-MPT120S-48V-open-frame-power-supply-1-600x400.png 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p>With a rated output of 48\u202fV at 2.5\u202fA under natural convection, it provides ample power for logic circuits, communication gateways, and smaller motor drives. Its open\u2011frame design is intentional, allowing it to treated as a component on the system PCB rather than a standalone box. This design philosophy explored in more detail with other models in the range, such as the <a href=\"https:\/\/www.shop-tps.com\/shop\/tps-mpt24s-5v-28399?category=8#attr=\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS\u2011MPT24S\u20115V<\/a> and the higher\u2011power <a href=\"https:\/\/www.shop-tps.com\/shop\/tps-gsh225s-12v-28334?category=8#attr=\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS\u2011GSH225S\u201112V<\/a>.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-electrical\">Electrical performance: wide input, high efficiency, and adjustable output<\/h2>\n<p>The ultra\u2011wide AC input range of 176\u2013500\u202fV AC is a game\u2011changer for global machine builders. At low\u2011line conditions (100\u2013176\u202fV AC), the unit operates with a 50\u202f% power derating. Which ensuring it can still function during severe brownouts. The power supply\u2019s efficiency is typically 88\u202f%, reducing internal heat dissipation and contributing to a longer operational life for itself and surrounding components. Output voltage is adjustable from 46\u202fV to 52\u202fV, allowing engineers to compensate for voltage drops in long cable runs. Which ensuring a precise 48\u202fV is delivered to the load.<\/p>\n<p>Output ripple and noise are critical for sensitive industrial electronics. The TPS-MPT120S-48V achieves a maximum ripple of just 100\u202fmV peak\u2011to\u2011peak, ensuring a clean power source for analog sensors and high\u2011speed digital controllers. This low\u2011ripple design achieved through a combination of a stable switching topology and high\u2011quality output filtering capacitors.<\/p>\n<\/section>\n<section>\n<h2 id=\"en-protection\">Protection functions for harsh industrial environments<\/h2>\n<p>Factory floors are electrically unforgiving. Power surges, overloaded outputs, and short circuits are common occurrences. The TPS-MPT120S-48V equipped with a comprehensive suite of protection functions to ensure both its own survival and the safety of the connected load. These functions designed for automatic recovery. Which is essential for minimizing downtime in unmonitored remote installations.<\/p>\n<p>The output short\u2011circuit, over\u2011current, and over\u2011voltage protections all operate with hiccup or restart modes, automatically attempting to restore normal operation after a fault cleared. Additionally, it features an input under\u2011voltage lockout and over\u2011temperature protection with auto\u2011recovery. These robust defense mechanisms, summarized in the diagram below, guarantee reliable 24\/7 operation in demanding industrial settings.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-15324\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/3000VAC-Isolation-48V-Power-Supply-Safety-Diagram-Industrial-\u2013-TPS-Elektronik-3.jpg\" alt=\"3000VAC Isolation 48V Power Supply Safety Diagram Industrial \u2013 TPS Elektronik 3000VAC Isolierung 48V Netzteil Sicherheitsdiagramm Industrie \u2013 TPS Elektronik\" width=\"1920\" height=\"1079\" \/><\/p>\n<\/section>\n<section>\n<h2 id=\"en-mechanical\">Mechanical integration: open\u2011frame design, mounting, and cooling<\/h2>\n<p>Measuring a compact 126\u202f\u00d7\u202f62\u202f\u00d7\u202f35\u202fmm and weighing only 290\u202fg, the TPS-MPT120S-48V is an ultra\u2011compact power module designed for embedded applications. The open\u2011frame, PCB\u2011mount design provides maximum flexibility for system integrators. It can mounted directly onto the main system board as a daughter\u2011card, or secured with standoffs inside a control cabinet. This eliminates the volume and cost of a redundant outer case and allows the host system\u2019s enclosure to provide the final touch protection and environmental sealing.<\/p>\n<p>The unit designed for natural convection cooling, which eliminates fan noise. Reducing a common point of mechanical failure, and simplifies maintenance. System designers must, however, ensure that the module has adequate clearance and airflow within the final enclosure to stay within its operating temperature range of -25\u202f\u00b0C to +60\u202f\u00b0C.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-15319\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/TPS-48V-120W-Power-Supply-Dimensions-126x62x35mm-Compact-Size-\u2013-TPS-Elektronik-4.jpg\" alt=\"TPS 48V 120W Power Supply Dimensions 126x62x35mm Compact Size \u2013 TPS Elektronik TPS 48V 120W Netzteil Abmessungen 126x62x35mm Kompakte Gr\u00f6\u00dfe \u2013 TPS Elektronik\" width=\"1920\" height=\"1079\" \/><\/p>\n<\/section>\n<section>\n<h2 id=\"en-compliance\">Compliance and safety: IEC\u202f62368\u20111, EMC, and 3000\u202fVAC isolation<\/h2>\n<p>For CE marking of industrial machinery, the integrated power supply must meet stringent safety and EMC standards. The TPS-MPT120S-48V designed and tested to comply with <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/69308\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">IEC\u202f62368\u20111<\/a>, the hazard\u2011based safety standard for AV, ICT, and industrial equipment. A critical safety feature is its 3000\u202fVAC input\u2011to\u2011output isolation. This reinforced insulation provides a safe and reliable barrier between the hazardous AC mains voltage and the accessible SELV (Safety Extra\u2011Low Voltage) output, protecting both operators and sensitive downstream electronics.<\/p>\n<p>Furthermore, electromagnetic compatibility guaranteed by compliance with CISPR\u202f32 \/ EN\u202f55032 Class\u202fA. This ensures the power supply will not generate excessive electromagnetic interference that could disrupt nearby control systems or communication networks. TPS provides a Declaration of Conformity with each product, streamlining the system integrator\u2019s CE documentation process.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-15314\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/07\/IEC62368\u20111-CE-Certified-48V-Open-Frame-Power-Supply-Label-\u2013-TPS-Elektronik-5.jpg\" alt=\"IEC62368\u20111 CE Certified 48V Open Frame Power Supply Label \u2013 TPS Elektronik IEC62368\u20111 CE Zertifiziertes 48V Open-Frame-Netzteil Etikett \u2013 TPS Elektronik\" width=\"1920\" height=\"1079\" \/><\/p>\n<\/section>\n<section>\n<h2 id=\"en-applications\">Application guidance for factory automation and motor drives<\/h2>\n<ul>\n<li><strong>Integrated Motor Drives<\/strong>: Powering the logic and gate\u2011drive circuits of compact servo and stepper motor drives directly from the DC bus.<\/li>\n<li><strong>Distributed I\/O and Fieldbus Modules<\/strong>: Providing a stable 48\u202fV rail for remote I\/O blocks and communication gateways (e.g., PROFINET, EtherCAT) in a compact form factor.<\/li>\n<li><strong>High\u2011Power Sensor Systems<\/strong>: Supplying clean power to laser scanners, vision systems, and radar sensors used in modern smart factories.<\/li>\n<li><strong>IoT and Edge Gateways<\/strong>: Powering embedded computing gateways that aggregate data at the edge of the industrial network.<\/li>\n<\/ul>\n<\/section>\n<section>\n<h2 id=\"en-rfq\">RFQ checklist for 48V open frame power supplies<\/h2>\n<ul>\n<li><strong>Power requirement<\/strong>: Confirm that the 120\u202fW continuous output meets the load demands with a 20\u201330\u202f% safety margin.<\/li>\n<li><strong>Input voltage<\/strong>: Verify the local AC mains voltage is within the 176\u2013500\u202fV AC range (or 249\u2013707\u202fV DC).<\/li>\n<li><strong>Output adjustment<\/strong>: Is the 46\u201352\u202fV adjustment range sufficient to compensate for voltage drops?<\/li>\n<li><strong>Thermal environment<\/strong>: Will the ambient temperature in the enclosure be below 60\u202f\u00b0C?<\/li>\n<li><strong>Certifications<\/strong>: Is IEC\u202f62368\u20111 compliance required for the end product? Is EN\u202f55032 Class\u202fA EMC sufficient?<\/li>\n<li><strong>Quantity and schedule<\/strong>: Prototype, pilot, and series volume requirements.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.shop-tps.com\/shop\/category\/power-supply-open-frame-enclosed-8\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><strong>Browse TPS 48V open frame power supplies and request a quote \u2192<\/strong><\/a><\/p>\n<\/section>\n<section>\n<h2 id=\"en-faq\">Frequently Asked Questions<\/h2>\n<p><strong>What is the main advantage of a 48V open\u2011frame supply over a 24V one?<\/strong><br \/>A 48V system uses half the current for the same power, reducing wiring costs, lowering I\u00b2R losses, and enabling longer cable runs, which is ideal for large factory installations.<\/p>\n<p><strong>Can the TPS-MPT120S-48V be used in a fanless, sealed enclosure?<\/strong><br \/>Yes, it designed for natural convection cooling. However, the system designer must ensure the ambient temperature inside the sealed enclosure does not exceed the unit\u2019s 60\u202f\u00b0C rating at the expected load.<\/p>\n<p><strong>What does &#8220;3000VAC isolation&#8221; mean for my system?<\/strong><br \/>It means the input and output sides are galvanically isolated with a reinforced insulation barrier tested at 3000\u202fV AC. This is a critical safety feature that protects users from electric shock and protects sensitive electronics from mains\u2011borne transients.<\/p>\n<p><strong>Does the open\u2011frame design mean I need an extra safety enclosure?<\/strong><br \/>Yes. The open\u2011frame PSU is a component intended for integration into a final system. The host equipment\u2019s enclosure provides the required protection against accidental contact with hazardous voltages.<\/p>\n<p><strong>Where can I find the complete technical specifications?<\/strong><br \/>Detailed datasheets and compliance certificates are available on the <a href=\"https:\/\/www.shop-tps.com\/shop\/category\/power-supply-open-frame-enclosed-8\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS open frame power supply product page<\/a>.<\/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> Streamline your global factory automation design with a single, compact 48V open\u2011frame power supply. <a style=\"color: #ffffff; font-weight: 600; text-decoration: underline; display: block; margin-top: 10px;\" href=\"https:\/\/www.shop-tps.com\/shop\/category\/power-supply-open-frame-enclosed-8\" 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alt=\"Loading\"><\/div><\/form><\/div>  <!-- .wpforms-container -->","protected":false},"excerpt":{"rendered":"<p>For system integrators, panel builders, and engineering\u2011driven procurement teams, selecting a power supply is not only about wattage. It also involves thermal margins, EMC behavior, safety documentation. And whether the system passes acceptance testing without rework. In the world of industrial automation, where 48\u202fV DC is increasingly used for distributed power architectures, motor drives. And\u2026 <a href=\"https:\/\/tps-elektronik.com\/en\/what-is-tps-48v-open-frame-power-supply-for-industrial-automation-and-control-systems-and-why-it-is-essential-for-reliable-machine-and-factory-operation\/\">Read More &raquo;<\/a><\/p>\n","protected":false},"author":9,"featured_media":15329,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[53],"tags":[],"class_list":["post-15264","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 v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>TPS 48V Open Frame Power Supply - TPS<\/title>\n<meta name=\"description\" content=\"TPS 48v power supply 120W mit 3000VAC-Isolierung, 88% Effizienz und kompaktem 126\u00d762\u00d735mm-Format. 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