{"product_id":"sigenergy-sigen-power-sensor-single-phase-direct-connection-100a-din-rail-rs485-solar-import-export-monitoring","title":"Sigenergy Sigen Power Sensor | Single Phase Direct Connection 100A | DIN Rail | RS485 | Solar Import\/Export Monitoring","description":"\u003cstyle\u003e\n  .sgs-desc * { box-sizing: border-box; }\n  .sgs-desc { font-family: inherit; color: inherit; line-height: 1.7; font-size: 16px; }\n  .sgs-desc p, .sgs-desc li, .sgs-desc td, .sgs-desc th { font-size: 16px !important; line-height: 1.7; }\n  .sgs-desc h2 { font-size: 22px !important; font-weight: 700; color: #0d1a2e; border-bottom: 2px solid #e8401c; padding-bottom: 6px; margin: 2rem 0 1rem; line-height: 1.3; }\n  .sgs-desc h3 { font-size: 17px !important; font-weight: 700; color: #0d1a2e; margin: 1.2rem 0 0.4rem; line-height: 1.4; }\n  .sgs-desc p { margin: 0 0 1rem; }\n  .sgs-desc ul { padding-left: 1.5rem; margin: 0 0 1rem; }\n  .sgs-desc ul li { margin-bottom: 0.5rem; }\n\n  .sgs-intro-box { background: #fdf0ed; 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}\n  .sgs-spec-table td { padding: 0.6rem 1rem; border-bottom: 1px solid #e8e0de; vertical-align: top; font-size: 16px !important; }\n  .sgs-spec-table tr:nth-child(even) td { background: #fdf0ed; }\n  .sgs-spec-table td:first-child { font-weight: 600; color: #111; width: 44%; }\n  .sgs-spec-table .section-head td { background: #e8401c !important; color: #fff !important; font-weight: 700 !important; font-size: 14px !important; text-transform: uppercase; letter-spacing: 0.05em; }\n\n  .sgs-faq-item { border-bottom: 1px solid #e8e0de; padding: 1rem 0; }\n  .sgs-faq-item:last-child { border-bottom: none; }\n  .sgs-faq-item p { margin: 0.4rem 0 0 !important; }\n\n  .sgs-infobox { background: #fdf0ed; border: 1px solid #f5c4b8; border-radius: 6px; padding: 1rem 1.2rem; margin-top: 1.5rem; font-size: 16px !important; line-height: 1.6; }\n\n  @media (max-width: 600px) {\n    .sgs-grid { grid-template-columns: 1fr 1fr; }\n    .sgs-stat-bar { justify-content: center; }\n    .sgs-enables-list { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"sgs-desc\"\u003e\n\n  \u003cdiv class=\"sgs-intro-box\"\u003e\n    \u003cp\u003e\n      \u003cspan class=\"sgs-badge\"\u003eSingle Phase\u003c\/span\u003e\n      \u003cspan class=\"sgs-badge dark\"\u003eDirect Connection\u003c\/span\u003e\n      \u003cspan class=\"sgs-badge green\"\u003e±1% Accuracy\u003c\/span\u003e\n      \u003cspan class=\"sgs-badge grey\"\u003ePart No: SIG-SENSOR-SP-DH\u003c\/span\u003e\n    \u003c\/p\u003e\n    \u003cp style=\"margin-top:0.75rem !important;\"\u003eThe \u003cstrong\u003eSigenergy Power Sensor SP-DH\u003c\/strong\u003e is a single-phase, direct-connection energy metering device for the SigenStor ecosystem. Unlike the CT variants, the main live cable passes directly through the sensor body — there is no separate current transformer to install or manage. This makes it the cleanest, simplest single-phase metering solution for new installations where the incoming supply cable can be routed through the unit during first fix. It supports up to 100A, covers the full range of standard UK residential single-phase supplies, and connects to the Energy Controller via RS485 Modbus RTU — enabling real-time grid monitoring and all SigenStor intelligent energy management functions.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"sgs-stat-bar\"\u003e\n    \u003cdiv class=\"sgs-stat\"\u003e\n\u003cdiv class=\"num\"\u003e1-Phase\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003e1P2W\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"sgs-stat\"\u003e\n\u003cdiv class=\"num\"\u003e100A\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eMax Current\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"sgs-stat\"\u003e\n\u003cdiv class=\"num\"\u003e±1%\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003ePower Accuracy\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"sgs-stat\"\u003e\n\u003cdiv class=\"num\"\u003e100ms\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eData Refresh\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"sgs-stat\"\u003e\n\u003cdiv class=\"num\"\u003eRS485\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eInterface\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"sgs-stat\"\u003e\n\u003cdiv class=\"num\"\u003eNo CT\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eDirect Connection\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhat the Power Sensor Enables\u003c\/h2\u003e\n  \u003cp\u003eInstalled at the grid connection point, the Power Sensor feeds live import\/export readings to the Energy Controller every 100ms, enabling the full range of SigenStor intelligent energy management features:\u003c\/p\u003e\n  \u003cul class=\"sgs-enables-list\"\u003e\n    \u003cli\u003eDynamic load management — throttles inverter output in real time to prevent main fuse overload\u003c\/li\u003e\n    \u003cli\u003eSolar surplus EV charging (Solar Boost, 100% PV, PV Storage \u0026amp; Charging modes) on the Sigen EV AC Charger\u003c\/li\u003e\n    \u003cli\u003eExport limitation — caps grid export for DNO \/ G98 compliance\u003c\/li\u003e\n    \u003cli\u003eImport limitation — prevents grid draw exceeding a set threshold\u003c\/li\u003e\n    \u003cli\u003eSelf-consumption optimisation — battery charges\/discharges to minimise import\u003c\/li\u003e\n    \u003cli\u003eAI tariff scheduling — real consumption data feeds the mySigen AI energy optimiser\u003c\/li\u003e\n    \u003cli\u003eAccurate mySigen app energy flow display — grid, solar, battery and household load\u003c\/li\u003e\n    \u003cli\u003eAnti-backflow protection when used with the Sigen Energy Gateway\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cdiv class=\"sgs-callout\"\u003e\n    \u003cp\u003e⚠️ \u003cstrong\u003eRequired for key functions:\u003c\/strong\u003e Dynamic load management and all solar-priority EV charging modes on the Sigen EV AC Charger \u003cstrong\u003erequire a Power Sensor\u003c\/strong\u003e. Without it, the SigenStor system has no visibility of household consumption and cannot prevent overload or optimise EV charging against solar surplus.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cdiv class=\"sgs-grid\"\u003e\n    \u003cdiv class=\"sgs-card\"\u003e\n\u003cstrong\u003e⚡ Direct Connection — No External CT\u003c\/strong\u003eThe main live conductor routes directly through the sensor body, eliminating the need for a separate current transformer. This produces a single, compact DIN rail unit with no CT cable to manage and no secondary wiring connections. Ideal for new installations where supply tails are accessible during first fix.\u003c\/div\u003e\n    \u003cdiv class=\"sgs-card\"\u003e\n\u003cstrong\u003e🏠 100A — Full UK Residential Supply Coverage\u003c\/strong\u003eMaximum operating current of 100A covers the full range of UK standard residential single-phase supplies — 60A, 80A, and 100A DNO cutout ratings — in a single product. Most UK homes with a single-phase supply will not exceed this limit under normal operating conditions.\u003c\/div\u003e\n    \u003cdiv class=\"sgs-card\"\u003e\n\u003cstrong\u003e⚡ 100ms Data Refresh\u003c\/strong\u003eMeasurements update every 100 milliseconds over RS485 (Modbus RTU, 9600 baud), giving the Energy Controller fast enough data to react to sudden load changes — kettle, EV charger, cooker — before an overload condition can trip the main fuse.\u003c\/div\u003e\n    \u003cdiv class=\"sgs-card\"\u003e\n\u003cstrong\u003e🎯 ±1% Power Accuracy\u003c\/strong\u003eVoltage ±0.5%, current ±0.5%, power ±1%, frequency ±0.2%. Sufficient for export metering, demand management and Smart Export Guarantee (SEG) export tracking.\u003c\/div\u003e\n    \u003cdiv class=\"sgs-card\"\u003e\n\u003cstrong\u003e📺 LCD Real-Time Display\u003c\/strong\u003eIntegrated LCD shows live voltage, current, power and frequency at the metering point — no app required for a commissioning check or routine inspection. Particularly useful during installation to verify correct connection before commissioning the inverter.\u003c\/div\u003e\n    \u003cdiv class=\"sgs-card\"\u003e\n\u003cstrong\u003e📐 Compact DIN Rail Body\u003c\/strong\u003eAt 36 × 100 × 63mm and 200g, the SP-DH is the most compact sensor body in the Sigen Sensor range. Standard 35mm DIN rail mounting for direct installation in any UK consumer unit or distribution board.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eSingle Phase Sensor Variants — Which to Choose\u003c\/h2\u003e\n  \u003ctable class=\"sgs-variant-table\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003ePart No\u003c\/th\u003e\n        \u003cth\u003eType\u003c\/th\u003e\n        \u003cth\u003eMax Current\u003c\/th\u003e\n        \u003cth\u003eCT Included\u003c\/th\u003e\n        \u003cth\u003eBest For\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr class=\"col-highlight\"\u003e\n        \u003ctd\u003eSIG-SENSOR-SP-DH ★ (this product)\u003c\/td\u003e\n        \u003ctd\u003eDirect connection\u003c\/td\u003e\n        \u003ctd\u003e100A\u003c\/td\u003e\n        \u003ctd\u003eNone (built-in measurement)\u003c\/td\u003e\n        \u003ctd\u003eNew installs where incomer cable can be routed through sensor; cleanest single-unit solution\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSIG-SENSOR-SP-CT-DH\u003c\/td\u003e\n        \u003ctd\u003eExternal CT\u003c\/td\u003e\n        \u003ctd\u003e120A (CT rated)\u003c\/td\u003e\n        \u003ctd\u003e1 × 120A split-core CT\u003c\/td\u003e\n        \u003ctd\u003eRetrofits, large cable sizes, or where cable cannot pass through sensor body\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003ctable class=\"sgs-spec-table\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr class=\"section-head\"\u003e\u003ctd colspan=\"2\"\u003eProduct Identity\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePart No\u003c\/td\u003e\n\u003ctd\u003eSIG-SENSOR-SP-DH\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDatasheet model designation\u003c\/td\u003e\n\u003ctd\u003eSP-DH\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSigenergy\u003c\/td\u003e\n\u003c\/tr\u003e\n\n      \u003ctr class=\"section-head\"\u003e\u003ctd colspan=\"2\"\u003ePower Supply \u0026amp; Grid Connection\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGrid connection type\u003c\/td\u003e\n\u003ctd\u003e1P2W (single-phase two-wire)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAC input voltage range\u003c\/td\u003e\n\u003ctd\u003e176–276 Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMax. operating current\u003c\/td\u003e\n\u003ctd\u003e100A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eNominal AC frequency\u003c\/td\u003e\n\u003ctd\u003e50 \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\n      \u003ctr class=\"section-head\"\u003e\u003ctd colspan=\"2\"\u003eMeasurement Accuracy\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVoltage accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCurrent accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePower accuracy\u003c\/td\u003e\n\u003ctd\u003e±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFrequency accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.2%\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eData refresh rate\u003c\/td\u003e\n\u003ctd\u003e100ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\n      \u003ctr class=\"section-head\"\u003e\u003ctd colspan=\"2\"\u003eCommunication\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eRS485\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBaud rate\u003c\/td\u003e\n\u003ctd\u003e9,600 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProtocol\u003c\/td\u003e\n\u003ctd\u003eModbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\n      \u003ctr class=\"section-head\"\u003e\u003ctd colspan=\"2\"\u003eGeneral Data\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDimensions (W × H × D)\u003c\/td\u003e\n\u003ctd\u003e36 × 100 × 63mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e200g\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eLCD (real-time voltage, current, power, frequency)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eInstallation method\u003c\/td\u003e\n\u003ctd\u003eDIN Rail 35mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eExternal CT required\u003c\/td\u003e\n\u003ctd\u003eNo — direct connection\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIngress protection rating\u003c\/td\u003e\n\u003ctd\u003eIP51\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-30°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eStorage temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to 85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRelative humidity\u003c\/td\u003e\n\u003ctd\u003e0–90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\n      \u003ctr class=\"section-head\"\u003e\u003ctd colspan=\"2\"\u003eStandards\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eStandard compliance\u003c\/td\u003e\n\u003ctd\u003eEN 61010-1:2010, EN 61010-2-030:2010\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdiv class=\"sgs-faq-item\"\u003e\n    \u003ch3\u003eShould I choose this (SP-DH) or the CT variant (SP-CT-DH)?\u003c\/h3\u003e\n    \u003cp\u003eThe direct-connection \u003cstrong\u003eSP-DH\u003c\/strong\u003e (this product) is the neater solution when you can route the main live cable through the sensor body — typically on new installations where the tails are accessible at first fix. The external CT variant \u003cstrong\u003eSP-CT-DH\u003c\/strong\u003e is better for retrofits, larger cable cross-sections that won't fit through the sensor aperture, or any situation where live cable disconnection is impractical. Both variants deliver identical measurement performance and enable the same SigenStor functions.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"sgs-faq-item\"\u003e\n    \u003ch3\u003eMy supply is 100A — is this sensor right at its limit?\u003c\/h3\u003e\n    \u003cp\u003eThe SP-DH is rated to exactly 100A maximum operating current. If your DNO cutout is 100A, the sensor will operate safely at the rated limit under full load. However, if your supply is 100A and you are concerned about headroom, or if there is any possibility of momentary current spikes above 100A, the \u003cstrong\u003eSP-CT-DH\u003c\/strong\u003e with its 120A CT provides a more comfortable margin. For supplies rated above 100A, the CT variant is required.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"sgs-faq-item\"\u003e\n    \u003ch3\u003eDoes the SP-DH come with any accessories?\u003c\/h3\u003e\n    \u003cp\u003eNo — the SP-DH is a self-contained direct-connection sensor with no external CT. The live conductor routes through the sensor body, which then mounts on the DIN rail. No CT, no additional cabling accessories are included. An RS485 cable to connect to the Energy Controller will be required (not supplied separately by Sigenergy — standard RS485\/Modbus twisted-pair cable used by the installer).\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"sgs-infobox\"\u003e\n    \u003cstrong\u003eℹ️ Often purchased with:\u003c\/strong\u003e\n    \u003cstrong\u003eSigenStor EC 3.6 SP or EC 6.0 SP\u003c\/strong\u003e — single-phase Energy Controllers this sensor monitors ·\n    \u003cstrong\u003eSigen EV AC Charger 7kW\u003c\/strong\u003e — Power Sensor required for solar charging modes ·\n    \u003cstrong\u003eSigen Gateway HomePro SP-F\u003c\/strong\u003e — works with Power Sensor for anti-backflow and load monitoring ·\n    \u003cstrong\u003eSIG-SENSOR-SP-CT-DH\u003c\/strong\u003e — external CT alternative for retrofits or larger cables\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Sigenergy","offers":[{"title":"Default Title","offer_id":63581216833885,"sku":"SIG-SENSOR-SP-DH","price":99.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/eastron-SDM230-modbus.jpg?v=1763485387","url":"https:\/\/qualityheating.co.uk\/products\/sigenergy-sigen-power-sensor-single-phase-direct-connection-100a-din-rail-rs485-solar-import-export-monitoring","provider":"AIZO Quality Heating","version":"1.0","type":"link"}