{"id":959,"date":"2021-06-27T06:16:14","date_gmt":"2021-06-27T06:16:14","guid":{"rendered":"http:\/\/bldcpump-local.local\/difference-between-2-phase-and-3-phase\/"},"modified":"2026-05-01T07:29:57","modified_gmt":"2026-05-01T07:29:57","slug":"difference-between-2-phase-and-3-phase","status":"publish","type":"page","link":"https:\/\/www.bldcpump.com\/ja\/2\u76f8\u30683\u76f8\u306e\u9055\u3044\/","title":{"rendered":"2\u76f8\u30683\u76f8\u306e\u9055\u3044"},"content":{"rendered":"<main>\n\n  <!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n       SECTION 1 -- PAGE HERO \/ TITLE BANNER WITH BREADCRUMB (dark, matches \/features\/)\n  \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n  <section aria-label=\"Page hero\" style=\"background:linear-gradient(135deg,#062A42 0%,#0B5E8F 60%,#1CA0C4 100%);position:relative;overflow:hidden;padding:56px 56px 48px;text-align:center;\">\n\n    <!-- Dark grid background -->\n    <div class=\"grid-bg-dark\" style=\"position:absolute;inset:0;opacity:0.7;pointer-events:none;\" aria-hidden=\"true\"><\/div>\n\n    <!-- Radial glow -->\n    <div style=\"position:absolute;top:-60px;right:-80px;width:500px;height:400px;background:radial-gradient(circle at 50% 50%,rgba(91,196,222,.18),transparent 65%);pointer-events:none;\" aria-hidden=\"true\"><\/div>\n\n    <div style=\"max-width:1140px;margin:0 auto;position:relative;z-index:1;\">\n\n      <!-- Kicker -->\n      <div class=\"kicker\" style=\"color:#5BC4DE;margin-bottom:20px;\">\u25c6 TECHNICAL GUIDE \u00b7 BLDC MOTOR TYPES<\/div>\n\n      <!-- H1 -->\n      <h1 style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:clamp(32px,5vw,56px);font-weight:600;color:#FFFFFF;letter-spacing:-0.03em;line-height:1.06;margin:0 0 20px;\">\n        Difference between 2-phase<br\/>and <span style=\"color:#5BC4DE;\">3-phase<\/span>\n      <\/h1>\n\n      <!-- Subheading paragraph with link to Definitive Guide -->\n      <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:17px;color:rgba(255,255,255,.75);line-height:1.65;margin:0 auto 24px;max-width:680px;\">\n        We've written a\n        <a href=\"\/brushless-dc-pump-definitive-guide\/\" style=\"color:#5BC4DE;text-decoration:underline;text-underline-offset:3px;font-weight:600;transition:color .2s;\" onmouseover=\"this.style.color='#FFFFFF'\" onmouseout=\"this.style.color='#5BC4DE'\">Brushless DC Pump Definitive Guide<\/a>\n        to cover this topic. Please visit it and get a comprehensive view of brushless DC pumps.\n      <\/p>\n\n      <!-- Breadcrumb -->\n      <nav aria-label=\"Breadcrumb\">\n        <ol style=\"display:inline-flex;align-items:center;flex-wrap:wrap;justify-content:center;gap:8px;list-style:none;padding:0;margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:14px;color:rgba(255,255,255,.65);\">\n          <li>\n            <a href=\"\/\" style=\"color:#5BC4DE;text-decoration:none;font-weight:500;transition:color .2s;\" onmouseover=\"this.style.color='#FFFFFF'\" onmouseout=\"this.style.color='#5BC4DE'\">Home<\/a>\n          <\/li>\n          <li aria-hidden=\"true\" style=\"color:rgba(255,255,255,.35);font-size:12px;\">\u203a<\/li>\n          <li>\n            <span aria-current=\"page\" style=\"color:rgba(255,255,255,.65);\">Difference between 2-phase and 3-phase<\/span>\n          <\/li>\n        <\/ol>\n      <\/nav>\n\n    <\/div>\n  <\/section>\n  <!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n       SECTION 2 -- ARTICLE BODY + SIDEBAR\n  \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n  <section aria-label=\"Article content and sidebar\" style=\"background:#F6F8FA;padding:64px 56px;\">\n    <div style=\"max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1fr 340px;gap:48px;align-items:start;\">\n\n      <!-- \u2500\u2500\u2500 LEFT: MAIN ARTICLE \u2500\u2500\u2500 -->\n      <article style=\"background:#ffffff;border:1px solid #E3E8EE;border-radius:8px;padding:48px 52px;box-shadow:0 1px 2px rgba(6,42,66,.06),0 1px 0 rgba(6,42,66,.04);\">\n\n        <!-- Featured snippet block (answer-first, added 2026-07-20) -->\n        <h2 style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:26px;font-weight:600;color:#062A42;letter-spacing:-0.02em;line-height:1.1;margin:0 0 24px;padding-bottom:12px;border-bottom:1.5px solid #E3E8EE;\">\n          What is the difference between 2-phase and 3-phase BLDC pumps?\n        <\/h2>\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:16px;color:#062A42;line-height:1.7;margin:0 0 40px;\">\n          <strong>The core difference is the stator and control method: a 2-phase BLDC pump uses a 4-slot stator with an internal Hall sensor, while a 3-phase BLDC pump uses a 6-slot stator with sensorless MCU control. The 3-phase design allows higher power, higher operating temperature (&gt;100&nbsp;&deg;C), and programmable protections; the 2-phase design is lower cost.<\/strong>\n        <\/p>\n        <!-- Lead paragraph -->\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:17px;font-weight:600;color:#062A42;line-height:1.65;margin:0 0 24px;padding:20px 24px;background:#E6F4F9;border-left:3px solid #1CA0C4;border-radius:0 4px 4px 0;\">\n          Both 2-phase and 3-phase brushless DC pumps use low voltage DC power sources instead of 110V or 220V AC power. 3-phase brushless DC pump allows a significant increase in the pump's rated power to improve the performance. And it can work in a higher temperature environment.\n        <\/p>\n\n        <!-- Intro paragraph -->\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 40px;\">\n          Three-phase brushless DC technology is an excellent upgrade of two-phase brushless DC technology.\n        <\/p>\n\n        <!-- H2: 2-phase -->\n        <h2 style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:26px;font-weight:600;color:#062A42;letter-spacing:-0.02em;line-height:1.1;margin:0 0 24px;padding-bottom:12px;border-bottom:1.5px solid #E3E8EE;\">\n          2-phase brushless DC motor\n        <\/h2>\n\n        <!-- Comparison figure -->\n        <figure style=\"margin:0 0 28px;text-align:center;\">\n          <img decoding=\"async\"\n            src=\"\/wp-content\/uploads\/2016\/03\/three-phase-Fig1.jpg\"\n            alt=\"Side-by-side comparison of motor stators: three-phase stator (left, 6 slots) and two-phase stator (right, 4 slots) on a light blue background\"\n            style=\"display:block;margin:0 auto;height:auto;border-radius:6px;border:1px solid #E3E8EE;\"\n            sizes=\"(max-width: 768px) 90vw, 580px\"\n          \/>\n          <figcaption style=\"font-family:ui-monospace,'SF Mono',Menlo,Consolas,'Courier New',monospace;font-size:11px;color:#6B7A88;letter-spacing:0.08em;text-transform:uppercase;margin-top:10px;\">\n            Left: three-phase stator &nbsp;|&nbsp; Right: two-phase stator\n          <\/figcaption>\n        <\/figure>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 18px;\">\n          The two-phase motor has a 4-slots stator and two pairs of magnetic fields. It must put a hall sensor inside of the pump body to check the rotor position. So we need to put the circuit inside of the pump.\n        <\/p>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 18px;\">\n          When the pump was working, the motor's current will cause a high temperature (sometimes even more than 100 Celsius). In general, the electronic component's temperature resistance is 85 Celsius.\n        <\/p>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 40px;\">\n          So we usually produce a two-phase pump's current of 2 amperes or less and need to guarantee the environmental temperature is less than 60~70 Celsius. Otherwise, the pump's reliability cannot be ensured.\n        <\/p>\n\n        <!-- H2: 3-phase -->\n        <h2 style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:26px;font-weight:600;color:#062A42;letter-spacing:-0.02em;line-height:1.1;margin:0 0 24px;padding-bottom:12px;border-bottom:1.5px solid #E3E8EE;\">\n          3-phase brushless DC motor\n        <\/h2>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 18px;\">\n          The three-phase brushless DC motor has a 6-slots stator and three pairs of magnetic fields. The pump use MCU control, and intelligent commutation position detection without additional sensors.\n        <\/p>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 18px;\">\n          So we do not need to put any electronic component inside of the pump body. We put all the circuits outside of the pump body, using the Aluminum case potting with epoxy.\n        <\/p>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 32px;\">\n          Therefore, the high temperatures generated by the motor work will not influence the circuit. Meanwhile, we replaced all the pump's materials with high-temperature-resistant materials; then the pump can be used in hot water even more than 100 Celsius.\n        <\/p>\n\n        <!-- Video thumbnail -->\n        <figure style=\"margin:0 0 40px;text-align:center;\">\n          <div style=\"position:relative;cursor:pointer;border-radius:8px;overflow:hidden;box-shadow:0 8px 24px -8px rgba(6,42,66,.18),0 2px 6px rgba(6,42,66,.06);width:600px;max-width:100%;margin:0 auto;\" role=\"button\" tabindex=\"0\" aria-label=\"Play 3 Phase DC motor control video\" data-youtube=\"0jt5EvdXyIw\">\n            <img loading=\"lazy\" decoding=\"async\"\n              src=\"\/wp-content\/uploads\/2026\/05\/3-Phase-DC-Motor-Control-Thumbnail.png\"\n              alt=\"Video preview: 3 Phase DC motor control \u2014 circuit diagram and motor illustration showing sensorless commutation\"\n              sizes=\"(max-width: 768px) 90vw, 600px\"\n              style=\"width:100%;display:block;object-fit:cover;\"\n            \/>\n            <!-- Overlay with centered play button -->\n            <div style=\"position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,42,66,.2) 0%,rgba(6,42,66,.55) 100%);display:flex;align-items:center;justify-content:center;\">\n              <div style=\"width:60px;height:60px;border-radius:50%;background:#1CA0C4;border:3px solid rgba(255,255,255,.9);display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 8px rgba(28,160,196,.25);transition:transform .2s;\" onmouseover=\"this.style.transform='scale(1.1)'\" onmouseout=\"this.style.transform='scale(1)'\">\n                <svg width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\" aria-hidden=\"true\"><path d=\"M8 5.14v14l11-7-11-7z\" fill=\"#ffffff\"\/><\/svg>\n              <\/div>\n            <\/div>\n          <\/div>\n          <figcaption style=\"font-family:ui-monospace,'SF Mono',Menlo,Consolas,'Courier New',monospace;font-size:11px;color:#6B7A88;letter-spacing:0.08em;text-transform:uppercase;margin-top:10px;\">\n            3 Phase DC Motor Control -- Circuit &amp; Operation Explained\n          <\/figcaption>\n        <\/figure>\n\n        <!-- H2: Advantages -->\n        <h2 style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:26px;font-weight:600;color:#062A42;letter-spacing:-0.02em;line-height:1.1;margin:0 0 24px;padding-bottom:12px;border-bottom:1.5px solid #E3E8EE;\">\n          Advantages of 3-phase brushless DC pump\n        <\/h2>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 18px;\">\n          A three-phase brushless DC pump has many advantages over a two-phase brushless DC pump.\n        <\/p>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 18px;\">\n          When we use a three-phase brushless DC motor driven instead of a two-phase, we can make the pump power much higher, which means a much larger flow rate and higher head.\n        <\/p>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 40px;\">\n          Due to the use of MCU, we can add many program functions to the pump, such as Reverse protection, stuck protection, over-current protection, manual speed control, gifted program, and so on.\n        <\/p>\n\n        <!-- H2: Notes -->\n        <h2 style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:26px;font-weight:600;color:#062A42;letter-spacing:-0.02em;line-height:1.1;margin:0 0 24px;padding-bottom:12px;border-bottom:1.5px solid #E3E8EE;\">\n          Notes\n        <\/h2>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 18px;\">\n          Some things need to attend, three-phase DC is entirely different from three-phase AC. Three-phase DC has the same power supply as the two-phase DC, and it has two power cables, one positive and one negative. However, the three-phase AC has three power cables.\n        <\/p>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 28px;\">\n          How to distinguish our two-phase and three-phase pumps?\n        <\/p>\n\n        <!-- CTA button -->\n        <div style=\"margin-bottom:20px;\">\n          <a href=\"\/downloads\/product-catalog.pdf\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"btn-primary\">\n            <svg width=\"16\" height=\"16\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><path d=\"M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4\"\/><polyline points=\"7 10 12 15 17 10\"\/><line x1=\"12\" y1=\"15\" x2=\"12\" y2=\"3\"\/><\/svg>\n            Download Our Full Products Catalog\n          <\/a>\n        <\/div>\n\n        <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:15px;color:#6B7A88;line-height:1.7;margin:0 0 48px;\">\n          And view our <a href=\"\/model-code-instruction\/\" style=\"color:#1CA0C4;font-weight:600;text-decoration:underline;text-underline-offset:3px;transition:color .2s;\" onmouseover=\"this.style.color='#0B5E8F'\" onmouseout=\"this.style.color='#1CA0C4'\">Model Code Instruction<\/a> here.\n        <\/p>\n\n        <!-- \u2500\u2500 Comparison figure (single composite image) \u2500\u2500 -->\n        <figure style=\"margin:0 0 40px;text-align:center;\">\n          <img decoding=\"async\"\n            src=\"\/wp-content\/uploads\/2022\/05\/3-phase-vs-2-phase-brushless-DC-pump.webp\"\n            alt=\"Side-by-side comparison of 2-phase vs 3-phase brushless DC pump internal layout: 2-phase has Hall sensor PCB inside the pump body with 4-slot stator; 3-phase uses sensorless driver PCB outside the pump body with 6-slot stator\"\n            loading=\"lazy\"\n            sizes=\"(max-width: 768px) 90vw, 680px\"\n            style=\"max-width:100%;height:auto;display:block;margin:0 auto;border:1px solid #E3E8EE;border-radius:8px;box-shadow:0 1px 2px rgba(6,42,66,.06),0 1px 0 rgba(6,42,66,.04);\"\n          \/>\n          <figcaption style=\"font-family:ui-monospace,'SF Mono',Menlo,Consolas,'Courier New',monospace;font-size:11px;color:#6B7A88;letter-spacing:0.08em;text-transform:uppercase;margin-top:10px;\">\n            \u25c6 Internal vs External Circuit Layout\n          <\/figcaption>\n        <\/figure>\n        <!-- \/comparison figure -->\n\n      <\/article>\n      <!-- \/LEFT ARTICLE -->\n\n      <!-- \u2500\u2500 RIGHT COLUMN: Sidebar (v2 \u2014 explicit inline styles, no .product-card dependency) \u2500\u2500 -->\n      <aside aria-label=\"About and catalog sidebar\" style=\"display:flex;flex-direction:column;gap:24px;\">\n\n        <!-- Card 1: About BLDC PUMP -->\n        <div\n          style=\"background:#FFFFFF;border:1px solid #E3E8EE;border-radius:8px;overflow:hidden;box-shadow:0 1px 2px rgba(6,42,66,.06),0 1px 0 rgba(6,42,66,.04);transition:box-shadow .25s,transform .2s;\"\n          onmouseover=\"this.style.boxShadow='0 8px 24px -8px rgba(6,42,66,.18),0 2px 6px rgba(6,42,66,.06)';this.style.transform='translateY(-3px)'\"\n          onmouseout=\"this.style.boxShadow='0 1px 2px rgba(6,42,66,.06),0 1px 0 rgba(6,42,66,.04)';this.style.transform='translateY(0)'\"\n        >\n          <!-- Factory image -->\n          <img decoding=\"async\"\n            src=\"\/wp-content\/uploads\/2021\/06\/general-hero-bg-1.webp\"\n            alt=\"BLDC PUMP factory in Shenzhen \u2014 production line for brushless DC water pumps\"\n            width=\"340\"\n            height=\"200\"\n            sizes=\"auto, (max-width: 768px) 100vw, 340px\"\n            style=\"width:100%;height:200px;object-fit:cover;display:block;border-bottom:1px solid #E3E8EE;\"\n            loading=\"lazy\"\n          \/>\n          <!-- Card content -->\n          <div style=\"padding:24px 20px 28px;text-align:center;\">\n            <h3 style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:18px;font-weight:700;color:#062A42;letter-spacing:-0.01em;margin:0 0 14px;\">About BLDC PUMP<\/h3>\n            <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:13px;color:#6B7A88;line-height:1.7;margin:0 0 12px;\">\n              We are focused on brushless DC water pump's R&amp;D and production from 2009. A water pump manufacturer with about 100 highly technical, skilled employees in Shenzhen of China.\n            <\/p>\n            <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:13px;color:#6B7A88;line-height:1.7;margin:0 0 12px;\">\n              We've chosen to provide customers with comprehensive and flexible solutions according to customers' needs and win at the product quality.\n            <\/p>\n            <p style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:13px;color:#6B7A88;line-height:1.7;margin:0 0 20px;\">\n              Our passion lies in helping start-ups grow from 'Zero to One.' 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Compare temperature limits, power, cost & reliability before you choose.\",\n    \"url\": \"https:\/\/www.bldcpump.com\/difference-between-2-phase-and-3-phase\/\",\n    \"mainEntityOfPage\": {\n        \"@type\": \"WebPage\",\n        \"@id\": \"https:\/\/www.bldcpump.com\/difference-between-2-phase-and-3-phase\/\"\n    },\n    \"image\": \"https:\/\/www.bldcpump.com\/wp-content\/uploads\/2016\/03\/three-phase-Fig1.jpg\",\n    \"author\": {\n        \"@type\": \"Organization\",\n        \"name\": \"BLDC PUMP\",\n        \"url\": \"https:\/\/www.bldcpump.com\/\"\n    },\n    \"publisher\": {\n        \"@type\": \"Organization\",\n        \"name\": \"BLDC PUMP\",\n        \"logo\": {\n            \"@type\": \"ImageObject\",\n            \"url\": \"https:\/\/www.bldcpump.com\/wp-content\/uploads\/2019\/07\/Logo-300x300.png\"\n        },\n        \"foundingDate\": \"2009\"\n    },\n    \"datePublished\": \"2021-06-27T06:16:14+00:00\",\n    \"dateModified\": \"2026-07-21T03:33:50+00:00\",\n    \"articleSection\": \"BLDC Pump Technical Guide\",\n    \"keywords\": \"2-phase BLDC pump, 3-phase BLDC pump, brushless DC motor, Hall sensor pump, MCU pump\"\n}\n<\/script>\n<script type=\"application\/ld+json\">\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the difference between 2-phase and 3-phase BLDC pumps?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The core difference is the stator and control method: a 2-phase BLDC pump uses a 4-slot stator with an internal Hall sensor, while a 3-phase BLDC pump uses a 6-slot stator with sensorless MCU control. The 3-phase design allows higher power, higher operating temperature (>100 \u00b0C), and programmable protections; the 2-phase design is lower cost.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Which is better, 2-phase or 3-phase BLDC pump?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Neither is universally better \u2014 the choice depends on the application. Choose 2-phase for lower-cost, general-purpose applications with moderate temperature and power. Choose 3-phase when you need higher power, higher operating temperature (>100 \u00b0C), or programmable protection features enabled by MCU control.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do 3-phase BLDC pumps use a Hall sensor?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. 3-phase BLDC pumps typically use sensorless MCU control instead of a Hall sensor. The MCU calculates rotor position from back-EMF, eliminating the failure point that Hall sensors can introduce in high-temperature or long-life applications.\"\n            }\n        }\n    ]\n}\n<\/script>\n<script type=\"application\/ld+json\">\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"BreadcrumbList\",\n    \"itemListElement\": [\n        {\n            \"@type\": \"ListItem\",\n            \"position\": 1,\n            \"name\": \"Home\",\n            \"item\": \"https:\/\/www.bldcpump.com\/\"\n        },\n        {\n            \"@type\": \"ListItem\",\n            \"position\": 2,\n            \"name\": \"2-Phase vs 3-Phase BLDC Pump\",\n            \"item\": \"https:\/\/www.bldcpump.com\/difference-between-2-phase-and-3-phase\/\"\n        }\n    ]\n}\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>\u25c6 TECHNICAL GUIDE \u00b7 BLDC MOTOR TYPES Difference between 2-phaseand 3-phase We&#8217;ve written a Brushless DC Pump Definitive Guide to cover this topic. Please visit it and get a comprehensive view of brushless DC pumps. Home \u203a Difference between 2-phase and 3-phase What is the difference between 2-phase and 3-phase BLDC pumps? The core difference [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"","_seopress_titles_title":"2-Phase vs 3-Phase BLDC Pump: Key Differences | BLDC PUMP","_seopress_titles_desc":"2-phase vs 3-phase BLDC pumps: 4-slot Hall-sensor design vs 6-slot MCU control. 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