{"product_id":"2bh-c1-c3-ac110v-solenoid-valve-coil","title":"2BH-C1\/C3 AC110V Solenoid valve coil","description":"\u003cdiv class=\"koeed-container\" style=\"width: 100%; color: inherit; line-height: 1.6;\"\u003e\n  \u003cstyle\u003e\n    .koeed-section-title {\n      color: #16c8c8;\n      border-bottom: 2px solid #16c8c8;\n      padding-bottom: 8px;\n      margin-top: 2.5rem;\n      margin-bottom: 1.2rem;\n      font-size: 1.5em;\n    }\n    .koeed-accent-text {\n      color: #16c8c8;\n      font-weight: bold;\n    }\n    .koeed-table-wrapper {\n      overflow-x: auto;\n      margin-bottom: 1.5rem;\n    }\n    .koeed-table {\n      width: 100%;\n      border-collapse: collapse;\n      font-size: 0.95em;\n    }\n    .koeed-table th, .koeed-table td {\n      border: 1px solid #eeeeee;\n      padding: 12px;\n      text-align: left;\n    }\n    .koeed-table th {\n      background-color: #16c8c8;\n      color: #ffffff;\n      font-weight: bold;\n    }\n    .koeed-table tr:nth-child(odd) {\n      background-color: #f4fcfc;\n    }\n    .koeed-table tr:nth-child(even) {\n      background-color: #fafafa;\n    }\n    .koeed-bullet-list {\n      padding-left: 20px;\n      margin-bottom: 1.5rem;\n    }\n    .koeed-bullet-list li {\n      margin-bottom: 8px;\n    }\n    .koeed-tool-panel {\n      background-color: #fafafa;\n      border: 1px solid #eeeeee;\n      border-radius: 8px;\n      padding: 24px;\n      margin-top: 2rem;\n      box-shadow: 0 4px 6px rgba(0,0,0,0.02);\n    }\n    .koeed-tool-header {\n      color: #16c8c8;\n      margin-top: 0;\n      margin-bottom: 8px;\n      font-size: 1.3em;\n    }\n    .koeed-input-group {\n      margin-bottom: 1rem;\n    }\n    .koeed-input-group label {\n      display: block;\n      margin-bottom: 6px;\n      font-weight: bold;\n      font-size: 0.9em;\n    }\n    .koeed-input-group input {\n      width: 100%;\n      padding: 10px;\n      border: 1px solid #cccccc;\n      border-radius: 4px;\n      box-sizing: border-box;\n      font-family: inherit;\n    }\n    .koeed-btn {\n      background-color: #16c8c8;\n      color: #ffffff;\n      border: none;\n      padding: 12px 24px;\n      cursor: pointer;\n      font-weight: bold;\n      border-radius: 4px;\n      width: 100%;\n      transition: background-color 0.3s;\n    }\n    .koeed-btn:hover {\n      background-color: #13a6a6;\n    }\n    .koeed-result-box {\n      margin-top: 1rem;\n      padding: 16px;\n      background-color: #f4fcfc;\n      border-left: 4px solid #16c8c8;\n      font-size: 1.05em;\n      display: none;\n    }\n    .koeed-faq-item {\n      margin-bottom: 1.5rem;\n    }\n    .koeed-faq-q {\n      font-weight: bold;\n      color: #16c8c8;\n      margin-bottom: 0.5rem;\n      font-size: 1.05em;\n    }\n    .koeed-faq-a {\n      margin-top: 0;\n    }\n  \u003c\/style\u003e\n\n  \u003ch2 class=\"koeed-section-title\"\u003eEngineer's Quick Brief\u003c\/h2\u003e\n  \u003cul class=\"koeed-bullet-list\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh Inrush Capability:\u003c\/strong\u003e Engineered to deliver a robust \u003cstrong\u003e2.2A starting current (at 50Hz)\u003c\/strong\u003e to rapidly overcome static friction and high tank-port back pressure during spool shifting.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOil-Immersed Reliability:\u003c\/strong\u003e Designed for wet-type directional control valves (CETOP 3\/D03 and CETOP 5\/D05), providing excellent heat dissipation and significantly quieter operation compared to air-gap solenoids.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStandardized Connectivity:\u003c\/strong\u003e Compatible with standard \u003cstrong\u003eDIN 43650 \/ ISO 4400\u003c\/strong\u003e 3-pin electrical plug connectors, facilitating rapid field replacement without disturbing the valve block.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrimary Application Scenario:\u003c\/strong\u003e Widely utilized in automated hydraulic manifolds across plastic injection molding, heavy-duty CNC machinery, and industrial stamping presses.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2 class=\"koeed-section-title\"\u003eIntroduction to 2BH-C1\/C3 Solenoid Coil\u003c\/h2\u003e\n  \u003cp\u003eThe \u003cstrong\u003e2BH-C1\/C3 AC110V Solenoid Valve Coil\u003c\/strong\u003e is a critical electromechanical actuator component manufactured primarily by DOFLUID (and cross-compatible with Vickers and Hyvair systems). It is specifically wound for \u003cstrong\u003e110V\/120V AC\u003c\/strong\u003e control circuits. When energized, the coil generates a concentrated magnetic field that physically pulls the internal armature, shifting the hydraulic valve spool to change the direction of fluid flow.\u003c\/p\u003e\n  \u003cp\u003eUnlike DC coils, AC solenoid coils exhibit a distinct \"inrush\" current phase. The 2BH-C1\/C3 is designed to handle this initial surge safely while maintaining a much lower, continuous holding power (approximately 22W-25W). Its molded, moisture-resistant encapsulation ensures long-lasting insulation integrity in factory environments prone to oil mist and thermal cycling.\u003c\/p\u003e\n\n  \u003ch2 class=\"koeed-section-title\"\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003cdiv class=\"koeed-table-wrapper\"\u003e\n    \u003ctable class=\"koeed-table\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth\u003eParameter\u003c\/th\u003e\n          \u003cth\u003eSpecification Value\u003c\/th\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eOEM \/ Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eDOFLUID \/ Hyvair \/ Vickers (2BH series)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e2BH-C1 \/ 2BH-C3\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eNominal Supply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e110V - 120V AC\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eOperating Frequency\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e50 Hz \/ 60 Hz\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003ePermissible Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e80 V to 120 V AC\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eStarting \/ Inrush Current\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e2.2 A (50Hz) \/ 2.0 A (60Hz)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eHolding Current\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e0.54 A (50Hz) \/ 0.41 A (60Hz)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eHolding Power\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003e25 W (50Hz) \/ 22 W (60Hz)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eElectrical Connection\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eDIN 43650-A \/ ISO 4400 (3-Pin Plug)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eInner Bore Diameter (ID)\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eApprox. 21 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eOverall Height (H)\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eApprox. 54.5 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003cstrong\u003eInsulation Class\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd\u003eClass H (Standard for high-temp hydraulics)\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 class=\"koeed-section-title\"\u003eIndustrial Application Matrix\u003c\/h2\u003e\n  \u003cul class=\"koeed-bullet-list\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHydraulic Power Units (HPUs):\u003c\/strong\u003e Serves as the primary shifting mechanism for directional valves routing high-pressure fluid to cylinders and hydraulic motors.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePlastic Injection Molding:\u003c\/strong\u003e Provides the fast response times required for precise mold clamping and plastic injection phases.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePress \u0026amp; Metal Forming:\u003c\/strong\u003e Rugged enough to withstand the shock and vibration typical in heavy stamping and forging equipment.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cdiv class=\"koeed-tool-panel\"\u003e\n    \u003ch3 class=\"koeed-tool-header\"\u003eAC Solenoid Diagnostics \u0026amp; Current Calculator\u003c\/h3\u003e\n    \u003cp style=\"font-size: 0.9em; margin-bottom: 20px;\"\u003eUse this field diagnostic tool to determine if your 2BH-C1\/C3 coil is healthy. Measure the DC resistance across the coil pins with your multimeter (with power OFF), and input your actual panel voltage to estimate the steady-state holding current and diagnose potential winding faults.\u003c\/p\u003e\n    \n    \u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 15px;\"\u003e\n      \u003cdiv class=\"koeed-input-group\" style=\"flex: 1; min-width: 200px;\"\u003e\n        \u003clabel for=\"koeed-measured-ohms\"\u003eMeasured DC Resistance (Ω)\u003c\/label\u003e\n        \u003cinput type=\"number\" id=\"koeed-measured-ohms\" placeholder=\"e.g. 45\" min=\"0\" step=\"0.1\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"koeed-input-group\" style=\"flex: 1; min-width: 200px;\"\u003e\n        \u003clabel for=\"koeed-actual-volts\"\u003eActual AC Line Voltage (V)\u003c\/label\u003e\n        \u003cinput type=\"number\" id=\"koeed-actual-volts\" placeholder=\"e.g. 115\" min=\"0\" value=\"110\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \n    \u003cbutton class=\"koeed-btn\" onclick=\"koeedDiagnoseCoil()\"\u003eRun Coil Diagnostics\u003c\/button\u003e\n    \n    \u003cdiv class=\"koeed-result-box\" id=\"koeed-diag-result\"\u003e\n      \u003cstrong\u003eEstimated Holding Current: \u003c\/strong\u003e \u003cspan id=\"koeed-current-output\" class=\"koeed-accent-text\" style=\"font-size: 1.2em;\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n      \u003cstrong\u003eDiagnostics Status: \u003c\/strong\u003e \u003cspan id=\"koeed-status-output\"\u003e\u003c\/span\u003e\n    \u003c\/div\u003e\n    \n    \u003cnoscript\u003e\n      \u003cp style=\"color: red; font-size: 0.85em; margin-top: 15px;\"\u003eJavaScript is required to operate the interactive diagnostics calculator. Please enable JavaScript in your browser.\u003c\/p\u003e\n    \u003c\/noscript\u003e\n  \u003c\/div\u003e\n\n  \u003cscript\u003e\n    function koeedDiagnoseCoil() {\n      const r = parseFloat(document.getElementById('koeed-measured-ohms').value);\n      const v = parseFloat(document.getElementById('koeed-actual-volts').value);\n      const resultBox = document.getElementById('koeed-diag-result');\n      \n      if (isNaN(r) || isNaN(v) || r \u003c 0 || v \u003c= 0) {\n        alert(\"Please enter valid positive numbers for Resistance and Voltage.\");\n        return;\n      }\n\n      \/\/ AC Coil estimation. Holding current is governed by impedance (Z), not just DC resistance (R).\n      \/\/ For a 110V\/50Hz coil with 0.54A holding current, Z is approx 203 ohms.\n      \/\/ DC resistance is typically much lower than Z (e.g., 20-60 ohms).\n      \n      let statusHtml = \"\";\n      let estCurrent = 0;\n\n      if (r \u003c 5) {\n        \/\/ Dead short\n        statusHtml = `\u003cspan style=\"color: #d9534f; font-weight: bold;\"\u003eCRITICAL FAULT (Short Circuit)\u003c\/span\u003e - The resistance is dangerously low. The winding insulation has likely melted and shorted. Do not energize; replace the coil immediately to prevent burning out the PLC relay.`;\n        document.getElementById('koeed-current-output').innerHTML = \"N\/A (Breaker Trip)\";\n      } else if (r \u003e 1000) {\n        \/\/ Open circuit\n        statusHtml = `\u003cspan style=\"color: #d9534f; font-weight: bold;\"\u003eCRITICAL FAULT (Open Circuit)\u003c\/span\u003e - The resistance is essentially infinite. The internal copper wire has snapped or burnt through. The coil will not actuate. Replace required.`;\n        document.getElementById('koeed-current-output').innerHTML = \"0.00 A\";\n      } else {\n        \/\/ Healthy range for an AC 110V hydraulic coil (typically 30-80 ohms DC, inductive reactance handles the rest)\n        \/\/ We estimate current based on typical nominal Z scaling with voltage.\n        \/\/ Nominal Z = ~203 ohms. \n        estCurrent = v \/ 203; \n        \n        document.getElementById('koeed-current-output').innerHTML = estCurrent.toFixed(2) + \" A (Steady State AC)\";\n        \n        if (v \u003c 90) {\n           statusHtml = `\u003cspan style=\"color: #f0ad4e; font-weight: bold;\"\u003eWARNING (Under-Voltage)\u003c\/span\u003e - Coil resistance appears normal, but your line voltage is too low. The coil may lack the magnetic force to overcome hydraulic back-pressure, causing the spool to stall and overheat the coil.`;\n        } else if (v \u003e 130) {\n           statusHtml = `\u003cspan style=\"color: #d9534f; font-weight: bold;\"\u003eWARNING (Over-Voltage)\u003c\/span\u003e - Coil resistance appears normal, but line voltage is excessively high. This will lead to rapid overheating and premature failure of the insulation.`;\n        } else {\n           statusHtml = `\u003cspan style=\"color: green; font-weight: bold;\"\u003eHEALTHY\u003c\/span\u003e - The DC resistance and line voltage are within acceptable operational boundaries for the 2BH-C1\/C3.`;\n        }\n      }\n      \n      document.getElementById('koeed-status-output').innerHTML = statusHtml;\n      resultBox.style.display = 'block';\n    }\n  \u003c\/script\u003e\n  \u003ch2 class=\"koeed-section-title\"\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdiv class=\"koeed-faq-item\"\u003e\n    \u003cdiv class=\"koeed-faq-q\"\u003eWhy does my AC coil burn out frequently after only a few weeks of use?\u003c\/div\u003e\n    \u003cp class=\"koeed-faq-a\"\u003eThe most common cause of premature AC coil failure is a \u003cstrong\u003estuck valve spool\u003c\/strong\u003e. When an AC coil is first energized, it draws a massive inrush current (up to 2.2A). Once the armature completes its stroke, the inductance rises, and the current drops to a safe holding level (0.54A). If debris or hydraulic lock prevents the spool from moving fully, the coil remains in the high-current \"inrush\" state and will rapidly melt its own insulation.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"koeed-faq-item\"\u003e\n    \u003cdiv class=\"koeed-faq-q\"\u003eWhat is the difference between standard AC coils and RAC (Rectified) coils?\u003c\/div\u003e\n    \u003cp class=\"koeed-faq-a\"\u003eStandard AC coils (like the 2BH-C1\/C3) run directly on alternating current, which can sometimes cause an audible \"buzzing\" noise as the magnetic field pulses. \u003cstrong\u003eRAC coils (e.g., 2BF-R1\/R3)\u003c\/strong\u003e contain a built-in bridge rectifier inside the DIN connector. They accept AC voltage but convert it to DC before it hits the winding. RAC coils offer \"shockless\" shifting, longer relay life, and completely silent holding operations.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"koeed-faq-item\"\u003e\n    \u003cdiv class=\"koeed-faq-q\"\u003eCan I temporarily use this 110V coil on a 220V circuit?\u003c\/div\u003e\n    \u003cp class=\"koeed-faq-a\"\u003e\u003cstrong\u003eAbsolutely not.\u003c\/strong\u003e Applying 220V AC to a 110V coil will double the current and quadruple the wattage (P=V²\/R). The coil will violently overheat and short circuit within seconds, potentially causing a fire or destroying your control panel electronics. You must use the 2BH-C2\/C4 model for 220V applications.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3 class=\"koeed-section-title\" style=\"font-size: 1.25em;\"\u003eCross-Reference \u0026amp; Selection\u003c\/h3\u003e\n  \u003cul class=\"koeed-bullet-list\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFor 220V\/240V AC Systems:\u003c\/strong\u003e \u003cem\u003eDOFLUID 2BH-C2\/C4\u003c\/em\u003e (Direct physical replacement, wound for higher voltage).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFor 24V DC Systems:\u003c\/strong\u003e \u003cem\u003eDOFLUID 2B-D2\u003c\/em\u003e (Commonly used in mobile hydraulics and modern PLC-direct control panels).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eShockless Rectified Alternative (110V):\u003c\/strong\u003e \u003cem\u003eDOFLUID 2BF-R1\/R3\u003c\/em\u003e (Requires a special DIN connector with an integrated rectifier).\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cscript type=\"application\/ld+json\"\u003e\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@graph\": [\n      {\n        \"@type\": \"FAQPage\",\n        \"mainEntity\": [\n          {\n            \"@type\": \"Question\",\n            \"name\": \"Why does my AC coil burn out frequently after only a few weeks of use?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"The most common cause is a stuck valve spool. If debris prevents the spool from moving fully, the AC coil remains in its high-current 'inrush' state instead of dropping to its lower holding current, causing it to rapidly melt its insulation.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"What is the difference between standard AC coils and RAC (Rectified) coils?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Standard AC coils run directly on alternating current and may buzz. RAC coils accept AC voltage but use a built-in bridge rectifier to convert it to DC before it hits the winding, offering shockless shifting and completely silent operation.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"Can I temporarily use this 110V coil on a 220V circuit?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Absolutely not. Applying 220V AC to a 110V coil will double the current and quadruple the wattage, causing the coil to violently overheat and short circuit within seconds.\"\n            }\n          }\n        ]\n      },\n      {\n        \"@type\": \"WebApplication\",\n        \"name\": \"Koeed AC Solenoid Diagnostics \u0026 Current Calculator\",\n        \"description\": \"An interactive engineering tool to calculate expected holding current and diagnose the health (short\/open circuit) of industrial 110V AC solenoid valve coils based on field multimeter readings.\",\n        \"applicationCategory\": \"Engineering Tool\",\n        \"operatingSystem\": \"All\",\n        \"browserRequirements\": \"Requires JavaScript\"\n      }\n    ]\n  }\n  \u003c\/script\u003e\n\u003c\/div\u003e","brand":"SIGMA","offers":[{"title":"Default Title","offer_id":44800396624057,"sku":"405221585898","price":77.24,"currency_code":"USD","in_stock":true}],"url":"https:\/\/koeed.com\/products\/2bh-c1-c3-ac110v-solenoid-valve-coil","provider":"KOEED","version":"1.0","type":"link"}