{"id":10040,"date":"2026-04-15T09:30:00","date_gmt":"2026-04-15T07:30:00","guid":{"rendered":"https:\/\/tps-elektronik.com\/?p=10040"},"modified":"2026-08-18T11:22:27","modified_gmt":"2026-08-18T09:22:27","slug":"ac-inrush-current-limiter-din-rail-tps-esb-12a-16a-25a","status":"publish","type":"post","link":"https:\/\/tps-elektronik.com\/en\/ac-inrush-current-limiter-din-rail-tps-esb-12a-16a-25a\/","title":{"rendered":"AC Inrush Current Limiter for DIN-Rail Panels: Controlling Startup Current for Breakers, Power Supplies, and Transformer Loads"},"content":{"rendered":"<article class=\"blog-post\" lang=\"en-US\">\n<header>\n<p>System integrators, panel builders, procurement teams, and electrical engineers often encounter problems not with steady-state power consumption, but during system startup. Circuit breakers may trip during initial energization, protection devices may need to be oversized, transformer branches can exhibit high magnetizing currents, and multiple power supplies may draw their peak input current simultaneously.<\/p>\n<p>The <strong>TPS AC Inrush Current Limiter<\/strong> is designed to address these cabinet-level startup conditions. The DIN-rail-mounted devices combine controlled inrush current limiting with an integrated bypass relay and are available in <strong>12 A, 16 A, and 25 A<\/strong> current classes.<\/p>\n<\/header>\n\n<header>\n<a class=\"cta cta-primary\" href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-16a-20496\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Check the TPS-ESB-01-16A for your RFQ \u2192<\/a>\n<\/header>\n\n<nav class=\"toc\" aria-label=\"Table of contents\">\n<h2 id=\"toc\">Table of Contents<\/h2>\n<ol>\n<li><a href=\"#why-ac-inrush-limiting-matters\">Why AC Inrush Current Limiting Matters in Panel Design<\/a><\/li>\n<li><a href=\"#tps-series-overview\">TPS Series Overview: DIN-Rail Startup Control for 230 VAC and 400 VAC Systems<\/a><\/li>\n<li><a href=\"#bypass-relay-vs-ntc\">Integrated Bypass Relay vs. Simple NTC Limiting<\/a><\/li>\n<li><a href=\"#application-fit\">Applications: Capacitive, Inductive, and Transformer Loads<\/a><\/li>\n<li><a href=\"#selecting-12a-16a-25a\">How to Select 12 A, 16 A, or 25 A<\/a><\/li>\n<li><a href=\"#installation-protection\">Installation, Protection, and Panel Design Considerations<\/a><\/li>\n<li><a href=\"#compliance-reliability\">Compliance, Reliability, and Procurement Documentation<\/a><\/li>\n<li><a href=\"#rfq-checklist\">What to Include in an RFQ<\/a><\/li>\n<\/ol>\n<\/nav>\n\n<section>\n<h2 id=\"why-ac-inrush-limiting-matters\">1. Why AC Inrush Current Limiting Matters in Panel Design<\/h2>\n\n<p>In many industrial cabinets, steady-state current is not the primary challenge for branch protection. The critical period is often the first few milliseconds after power-on.<\/p>\n\n<p>During energization, <strong>bulk capacitors charge<\/strong>, <strong>transformers can draw high magnetizing current<\/strong>, and multiple downstream devices may demand substantial line current simultaneously. A branch that appears acceptable based on nominal current can therefore cause nuisance tripping or require additional protection margin during commissioning.<\/p>\n\n<p>For system integrators and panel builders, startup behavior affects several aspects of the electrical design:<\/p>\n\n<ul>\n<li>branch protection and coordination,<\/li>\n<li>cabinet wiring and conductor sizing,<\/li>\n<li>grouping of devices on a common feeder,<\/li>\n<li>startup behavior during commissioning, and<\/li>\n<li>operation following power cycling.<\/li>\n<\/ul>\n\n<p>Procurement teams encounter the consequences when high inrush current leads to larger protective devices, additional branches, or other changes to the original cabinet architecture.<\/p>\n\n<p>An <strong>AC inrush current limiter<\/strong> can help control these short-duration current peaks, allowing protection and wiring decisions to be based on a more predictable startup profile. Final coordination must nevertheless be verified for the complete system.<\/p>\n\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-10052\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/03\/1_Inrush-Current-Limiter_AC-Inrush-Current-Limiter.jpg\" alt=\"Industrial control cabinet startup scene showing a DIN-rail AC inrush current limiter protecting multiple power supplies and an upstream circuit breaker\" width=\"1920\" height=\"1080\" \/><\/p>\n\n<p>This can be particularly relevant when several DIN-rail power supplies, such as the <a href=\"https:\/\/tps-elektronik.com\/en\/din-rail-power-supply-tps010-100w-gp-series-compact-switching-power-supply\/\">TPS010-100W GP Series<\/a>, <a href=\"https:\/\/tps-elektronik.com\/en\/din-rail-power-supply-tps030-130w-pro-series-24v-30-130w\/\">TPS030-130W Pro Series<\/a>, or <a href=\"https:\/\/tps-elektronik.com\/en\/tps100-320w-peak-dr-plus-din-rail-power-supply-170-power-boost\/\">TPS100-320W Peak DR Plus<\/a>, are energized from the same feeder.<\/p>\n\n<p><a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-12a-20495\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><strong>View the 12 A TPS-ESB model \u2192<\/strong><\/a><\/p>\n<\/section>\n\n<section>\n<h2 id=\"tps-series-overview\">2. TPS Series Overview: DIN-Rail Startup Control for 230 VAC and 400 VAC Systems<\/h2>\n\n<p>The TPS AC Inrush Current Limiter family is designed for <strong>DIN-rail installation<\/strong> and is available in <strong>12 A, 16 A, and 25 A<\/strong> current classes.<\/p>\n\n<p>For single-phase applications, the available models include:<\/p>\n\n<ul>\n<li><a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-12a-20495\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS-ESB-01-12A<\/a><\/li>\n<li><a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-16a-20496\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS-ESB-01-16A<\/a><\/li>\n<li><a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-25a-20497\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS-ESB-01-25A<\/a><\/li>\n<\/ul>\n\n<p>The broader product family also includes 400 VAC three-phase order variants, allowing engineering teams to consider a common inrush-limiting approach across different cabinet architectures.<\/p>\n\n<p>Key documented characteristics include:<\/p>\n\n<ul>\n<li><strong>DIN-rail mounting<\/strong><\/li>\n<li><strong>integrated bypass relay<\/strong><\/li>\n<li><strong>peak current limiting to 45 A<\/strong><\/li>\n<li><strong>limiting time of 100\u2013500 ms<\/strong><\/li>\n<li><strong>IP20 protection<\/strong><\/li>\n<li><strong>convection cooling<\/strong><\/li>\n<li><strong>\u221240 \u00b0C to +70 \u00b0C operating temperature<\/strong><\/li>\n<li><strong>300,000 h MTBF<\/strong><\/li>\n<\/ul>\n\n<p>These parameters address both electrical startup behavior and practical cabinet integration and should be considered together when specifying the appropriate model.<\/p>\n<\/section>\n\n<section>\n<h2 id=\"bypass-relay-vs-ntc\">3. Integrated Bypass Relay vs. Simple NTC Limiting<\/h2>\n\n<p>A key design characteristic of the TPS family is its <strong>integrated bypass relay<\/strong>. This distinguishes its operating principle from basic inrush-limiting circuits that rely solely on an NTC thermistor.<\/p>\n\n<p>NTC thermistors can provide effective inrush limitation in suitable applications, but their resistance depends strongly on temperature. After operation, a thermistor may remain warm and therefore have lower resistance during a subsequent restart. This behavior needs to be considered in applications with frequent or closely spaced power cycles.<\/p>\n\n<p>With a bypass-relay architecture, the current-limiting element is used during startup and subsequently bypassed for normal operation. This approach can support:<\/p>\n\n<ul>\n<li>repeated switching applications,<\/li>\n<li>lower continuous thermal loading of the limiting element,<\/li>\n<li>more predictable startup behavior across operating cycles, and<\/li>\n<li>separation of the startup-limiting function from normal steady-state conduction.<\/li>\n<\/ul>\n\n<p>The appropriate approach depends on the application. For industrial systems in which repeated startup behavior is an important design parameter, a relay-assisted limiter may offer advantages over a simple NTC-only circuit.<\/p>\n\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-10057\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/03\/2_Inrush-Current-Limiter_AC-Inrush-Current-Limiter.jpg\" alt=\"Technical comparison visual between a simple NTC-only inrush limiter and a DIN-rail inrush limiter with integrated bypass relay\" width=\"1920\" height=\"1080\" \/><\/p>\n\n<p>This can be particularly relevant where multiple AC\/DC power supplies share a common feeder, including systems based on the <a href=\"https:\/\/tps-elektronik.com\/en\/din-rail-power-supply-tps010-100w-gp-series-compact-switching-power-supply\/\">TPS010-100W GP Series<\/a> or <a href=\"https:\/\/tps-elektronik.com\/en\/din-rail-power-supply-tps030-130w-pro-series-24v-30-130w\/\">TPS030-130W Pro Series<\/a>.<\/p>\n\n<p><a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-16a-20496\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><strong>Review the TPS-ESB-01-16A \u2192<\/strong><\/a><\/p>\n<\/section>\n\n<section>\n<h2 id=\"application-fit\">4. Applications: Capacitive, Inductive, and Transformer Loads<\/h2>\n\n<p>The TPS limiter is specified for <strong>capacitive loads<\/strong>, <strong>inductive loads<\/strong>, and <strong>isolating transformers<\/strong>. These load types can produce startup currents substantially higher than their normal operating current.<\/p>\n\n<h3 id=\"application-capacitive-loads\">4.1 Capacitive Loads<\/h3>\n\n<p>Many power-electronics systems contain significant input capacitance. At switch-on, discharged bulk capacitors can initially present a low-impedance load, producing a short but substantial current pulse.<\/p>\n\n<p>This behavior is common in DIN-rail power supplies, industrial PC power supplies, ATX units, and open-frame power supplies. When several devices are connected to one branch and energized simultaneously, their combined inrush current can become relevant to breaker and fuse coordination.<\/p>\n\n<p>Examples of power supplies that may form part of such system architectures include the <a href=\"https:\/\/tps-elektronik.com\/en\/fsp300-70pfl-sk-300w-atx-industrial-power-supply\/\">FSP300-70PFL-SK<\/a>, <a href=\"https:\/\/tps-elektronik.com\/en\/fsp700-80psa-sk-700w-industrial-ipc-power-supply-80-plus-bronze\/\">FSP700-80PSA-SK<\/a>, <a href=\"https:\/\/tps-elektronik.com\/en\/fsp500-50fdb-500w-80-plus-gold-industrial-pc-power-supply-1u-server\/\">FSP500-50FDB<\/a>, and <a href=\"https:\/\/tps-elektronik.com\/en\/tps-gsh180s-180w-open-frame-power-supply\/\">TPS-GSH180S<\/a>.<\/p>\n\n<h3 id=\"application-inductive-loads\">4.2 Inductive Loads<\/h3>\n\n<p>Inductive loads present a different startup characteristic. Magnetizing current, switching phase, residual magnetic flux, and branch topology can result in current peaks that are not apparent from nominal operating-current calculations.<\/p>\n\n<p>Limiting the initial current can therefore help make the energization behavior of these branches more predictable.<\/p>\n\n<h3 id=\"application-transformers\">4.3 Isolating Transformers<\/h3>\n\n<p>Transformers are a common source of high inrush current. Depending on the point on the AC waveform at which energization occurs and the magnetic state of the core, the initial magnetizing current can significantly exceed the transformer\u2019s normal operating current.<\/p>\n\n<p>An appropriately selected inrush current limiter can help control this startup event during initial installation, routine switching, maintenance, or restart after a power interruption.<\/p>\n\n<p>TPS documentation also identifies support for the use of <strong>smaller and faster circuit breakers<\/strong> and potential <strong>reduction of conductor cross-sections<\/strong>. These possibilities depend on the complete branch design and do not replace system-level calculations for conductor sizing, overload protection, short-circuit protection, or protective-device coordination.<\/p>\n<\/section>\n\n<section>\n<h2 id=\"selecting-12a-16a-25a\">5. How to Select 12 A, 16 A, or 25 A<\/h2>\n\n<p>Selection should begin with the <strong>continuous branch current<\/strong>, followed by the type and number of downstream loads and their simultaneous startup characteristics.<\/p>\n\n<h3 id=\"selecting-12a\">5.1 TPS-ESB-01-12A<\/h3>\n\n<p>The <a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-12a-20495\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS-ESB-01-12A<\/a> may be suitable for compact single-phase branches with moderate continuous current but significant startup peaks, including grouped DIN-rail power supplies, smaller control cabinets, IPC branches, and transformer-fed auxiliary circuits.<\/p>\n\n<h3 id=\"selecting-16a\">5.2 TPS-ESB-01-16A<\/h3>\n\n<p>The <a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-16a-20496\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS-ESB-01-16A<\/a> provides a higher continuous-current class for single-phase branches where 12 A is insufficient.<\/p>\n\n<p>Selection should be based on the actual feeder current and startup profile rather than treating 16 A as a universal default.<\/p>\n\n<h3 id=\"selecting-25a\">5.3 TPS-ESB-01-25A<\/h3>\n\n<p>The <a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-25a-20497\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS-ESB-01-25A<\/a> is intended for higher-current branches and may be appropriate where multiple capacitive loads, transformer loads, or a larger number of downstream devices share the same input segment.<\/p>\n\n<p>Nominal branch current alone is not sufficient for model selection. Engineering teams should also consider:<\/p>\n\n<ul>\n<li>How many downstream devices energize simultaneously?<\/li>\n<li>What is the inrush behavior of each downstream device?<\/li>\n<li>Are large input capacitors present?<\/li>\n<li>Are transformers included in the branch?<\/li>\n<li>What upstream breaker or fuse characteristics are required?<\/li>\n<li>How frequently will the cabinet be power-cycled?<\/li>\n<\/ul>\n\n<p>These parameters provide a more useful basis for selection than nameplate current alone.<\/p>\n\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-10065\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/03\/3_Inrush-Current-Limiter_AC-Inrush-Current-Limiter.jpg\" alt=\"Selection graphic comparing 12A, 16A, and 25A DIN-rail AC inrush current limiter models for different cabinet load profiles\" width=\"1920\" height=\"1080\" \/><\/p>\n<\/section>\n\n<section>\n<h2 id=\"installation-protection\">6. Installation, Protection, and Panel Design Considerations<\/h2>\n\n<p>The TPS limiter is designed for <strong>DIN-rail mounting<\/strong> on <strong>TS 35\/7.5 or TS 35\/15<\/strong> rails in the specified mounting orientation.<\/p>\n\n<p>The family uses <strong>screw terminals<\/strong> for <strong>AWG 13\u201311<\/strong> conductors and relies on <strong>convection cooling<\/strong>. Approximate dimensions are:<\/p>\n\n<ul>\n<li><strong>Width:<\/strong> 22.5 mm<\/li>\n<li><strong>Height:<\/strong> 100 mm<\/li>\n<li><strong>Depth:<\/strong> 112 mm<\/li>\n<\/ul>\n\n<p>The narrow 22.5 mm format can simplify installation near feeder protection or adjacent power-conversion equipment where DIN-rail space is limited.<\/p>\n\n<p>An inrush current limiter does <strong>not<\/strong> replace correct fuse, circuit-breaker, conductor, or short-circuit protection design. Its function is to limit the startup current peak, which may support more appropriate coordination of upstream protective devices.<\/p>\n\n<p>For panel design, two points are particularly important:<\/p>\n\n<ol>\n<li>Select the limiter as part of the <strong>complete branch architecture<\/strong>, rather than adding it only after nuisance tripping occurs.<\/li>\n<li>Document downstream load grouping and simultaneous energization, particularly where several power supplies or transformer-fed circuits share one branch.<\/li>\n<\/ol>\n\n<p>For example, if a branch supplies devices such as the <a href=\"https:\/\/tps-elektronik.com\/en\/tps100-320w-peak-dr-plus-din-rail-power-supply-170-power-boost\/\">TPS100-320W Peak DR Plus<\/a> or <a href=\"https:\/\/tps-elektronik.com\/en\/fsp350-70pfl-sk-350w-80-plus-bronze-industrial-ipc-psu\/\">FSP350-70PFL-SK<\/a>, their actual startup characteristics should be included in the branch-level assessment.<\/p>\n<\/section>\n\n<section>\n<h2 id=\"compliance-reliability\">7. Compliance, Reliability, and Procurement Documentation<\/h2>\n\n<p>For engineering qualification and supplier approval, environmental, safety, EMC, and reliability information should be reviewed alongside the electrical characteristics.<\/p>\n\n<p>The documented specifications include:<\/p>\n\n<ul>\n<li><strong>IP20 protection<\/strong><\/li>\n<li><strong>50 Hz input frequency<\/strong><\/li>\n<li><strong>up to 95% RH, non-condensing<\/strong><\/li>\n<li><strong>operating altitude up to 2,000 m<\/strong><\/li>\n<li><strong>operating temperature: \u221240 \u00b0C to +70 \u00b0C<\/strong><\/li>\n<li><strong>storage temperature down to \u221240 \u00b0C<\/strong><\/li>\n<li><strong>MTBF: 300,000 h<\/strong><\/li>\n<\/ul>\n\n<p>The product documentation references <strong>EN 60950-1<\/strong>, <strong>EN 61000-6-2<\/strong>, <strong>EN 61000-6-3<\/strong>, <strong>CE<\/strong>, and <strong>RoHS<\/strong>.<\/p>\n\n<p>For procurement and engineering review, these references should be evaluated against the requirements of the final application and the applicable current standards. Component-level documentation alone does not establish compliance of the complete machine, cabinet, or system.<\/p>\n\n<p>For additional standards and conformity background, engineering teams can consult <a href=\"https:\/\/www.iso.org\/quality-management\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">ISO quality management resources<\/a>, the <a href=\"https:\/\/www.iec.ch\/who-we-are\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">IEC<\/a>, and the <a href=\"https:\/\/single-market-economy.ec.europa.eu\/single-market\/goods\/ce-marking_en\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">European Commission\u2019s CE marking guidance<\/a>.<\/p>\n\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-10070\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/03\/4_Inrush-Current-Limiter_AC-Inrush-Current-Limiter.jpg\" alt=\"Quality and compliance visual for a DIN-rail AC inrush current limiter showing CE, RoHS, IP20, and documentation review in an industrial procurement setting\" width=\"1920\" height=\"1080\" \/><\/p>\n\n<p><a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-25a-20497\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"><strong>Review the TPS-ESB-01-25A \u2192<\/strong><\/a><\/p>\n<\/section>\n\n<section>\n<h2 id=\"rfq-checklist\">8. What to Include in an RFQ<\/h2>\n\n<p>An RFQ for an <strong>AC inrush current limiter<\/strong> should describe the electrical branch rather than specifying only a nominal current class.<\/p>\n\n<p>Useful RFQ information includes:<\/p>\n\n<ul>\n<li>supply configuration and voltage, including single-phase 230 VAC or relevant 400 VAC family requirements,<\/li>\n<li>required continuous current class: <strong>12 A, 16 A, or 25 A<\/strong>,<\/li>\n<li>downstream load type: capacitive, inductive, transformer-based, or mixed,<\/li>\n<li>number of power supplies or transformers energized simultaneously,<\/li>\n<li>available inrush-current data for downstream devices,<\/li>\n<li>upstream fuse or circuit-breaker type and rating,<\/li>\n<li>ambient temperature and enclosure ventilation,<\/li>\n<li>available DIN-rail space, and<\/li>\n<li>expected power-cycling frequency.<\/li>\n<\/ul>\n\n<p>Providing this information allows the limiter to be evaluated as part of the complete startup and protection architecture rather than as an isolated component.<\/p>\n\n<p>For applications where the required current class has already been established, the available single-phase models are:<\/p>\n\n<ul>\n<li><a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-12a-20495\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS-ESB-01-12A<\/a><\/li>\n<li><a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-16a-20496\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS-ESB-01-16A<\/a><\/li>\n<li><a href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-25a-20497\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">TPS-ESB-01-25A<\/a><\/li>\n<\/ul>\n<\/section>\n\n<section>\n<h2 id=\"faq\">FAQ<\/h2>\n\n<h3 id=\"faq-what-is-an-ac-inrush-current-limiter\">What is an AC inrush current limiter used for?<\/h3>\n\n<p>An AC inrush current limiter controls the short-duration current peak that can occur when capacitors charge, transformers are energized, or multiple AC-powered devices start simultaneously. In industrial panels, limiting this peak can help reduce nuisance tripping and support more predictable startup behavior.<\/p>\n\n<h3 id=\"faq-why-not-just-use-an-ntc\">Why use a bypass-relay limiter instead of a simple NTC?<\/h3>\n\n<p>An NTC thermistor may be suitable for some applications, but its resistance depends on temperature. If the NTC remains warm after operation, its ability to limit current during a rapid restart can differ from a cold start.<\/p>\n\n<p>A limiter with an integrated bypass relay performs the limiting function during startup and then bypasses the limiting element during normal operation. This architecture can be useful where repeated startup behavior and continuous thermal loading are important design considerations.<\/p>\n\n<h3 id=\"faq-how-do-i-choose-12a-16a-or-25a\">How do I choose between 12 A, 16 A, and 25 A?<\/h3>\n\n<p>Start with the branch\u2019s continuous current and then evaluate the downstream load mix, simultaneous startup behavior, transformer loads, available inrush-current data, and upstream protection.<\/p>\n\n<p>The limiter should not be selected solely from the nominal current ratings of the connected devices.<\/p>\n\n<h3 id=\"faq-can-it-help-with-breaker-coordination\">Can an inrush current limiter help with breaker and fuse coordination?<\/h3>\n\n<p>Limiting startup current can help reduce nuisance operation of upstream protective devices and may support more appropriate breaker or fuse coordination. The final protection concept must still be validated for the complete electrical system.<\/p>\n\n<h3 id=\"faq-where-does-it-fit-best\">Which applications are suitable for AC inrush current limiting?<\/h3>\n\n<p>Typical applications include <strong>capacitive loads, inductive loads, isolating transformers, grouped DIN-rail power supplies, industrial IPC power systems<\/strong>, and other cabinet branches where startup current is high relative to normal operating current.<\/p>\n<\/section>\n\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> Select the appropriate current class based on the branch requirements: <a style=\"color: #ffffff; font-weight: 600; text-decoration: underline;\" href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-12a-20495\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">12 A<\/a> | <a style=\"color: #ffffff; font-weight: 600; text-decoration: underline;\" href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-16a-20496\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">16 A<\/a> | <a style=\"color: #ffffff; font-weight: 600; text-decoration: underline;\" href=\"https:\/\/www.shop-tps.com\/en\/shop\/tps-esb-01-25a-20497\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">25 A<\/a><\/p>\n<\/footer>\n<\/article>\n\n<style id=\"wpforms-css-vars-4659-block-1e06e249-bd9c-4a9e-83f1-f27f6240670d\">\n\t\t\t\t#wpforms-4659.wpforms-block-1e06e249-bd9c-4a9e-83f1-f27f6240670d {\n\t\t\t\t--wpforms-field-size-input-height: 43px;\n--wpforms-field-size-input-spacing: 15px;\n--wpforms-field-size-font-size: 16px;\n--wpforms-field-size-line-height: 19px;\n--wpforms-field-size-padding-h: 14px;\n--wpforms-field-size-checkbox-size: 16px;\n--wpforms-field-size-sublabel-spacing: 5px;\n--wpforms-field-size-icon-size: 1;\n--wpforms-label-size-font-size: 16px;\n--wpforms-label-size-line-height: 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The TPS AC Inrush Current Limiter provides DIN-rail-mounted startup current limiting with an integrated bypass relay and 12 A, 16 A, and 25 A current classes for industrial panel applications.<\/p>\n","protected":false},"author":6,"featured_media":10042,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[53],"tags":[],"class_list":["post-10040","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 v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>AC Inrush Current Limiter for DIN-Rail Panels - TPS<\/title>\n<meta name=\"description\" content=\"Control startup current in industrial panels with TPS DIN-rail AC inrush current limiters. 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