{"product_id":"scu01-k8ds-ph1-phase-sequence-phase-loss-relay","title":"SCU01 (K8DS-PH1) Phase Sequence \u0026 Phase Loss Relay","description":"SCU01 (K8DS-PH1) Phase Sequence \u0026amp; Phase Loss Relay\rThe SCU01 (K8DS-PH1) from Omron is a three-phase phase-sequence and phase-loss monitoring relay designed to protect electrical systems and motors. It detects incorrect phase sequence and phase loss using a voltage detection method and provides a reliable SPDT relay output. This compact relay helps prevent reverse motor operation and supports stable monitoring in industrial power systems.\r\rAs an authorised distributor of Omron, E Control Devices supplies genuine SCU01 (K8DS-PH1) relays for industrial automation and electrical protection applications.\r\rThe SCU01 (K8DS-PH1) is a compact phase-monitoring relay designed for three-phase, 3-wire systems with voltages ranging from 200 to 480 VAC. The device detects both phase-sequence errors and phase-loss conditions to help maintain safe and reliable system operation.\r\rThis relay uses a voltage detection method to monitor the power supply and provides a SPDT relay output for control systems. It features LED indicators for monitoring the power and relay status, and its slim 17.5-mm design allows easy installation on DIN rails in control panels.\rKey Features\r\r \tPhase Sequence Monitoring – Detects incorrect phase order in three-phase systems.\r \tPhase Loss Detection – Identifies phase loss when power is turned ON.\r \tMotor Operation Protection – Supports phase loss detection while the motor is operating.\r \tVoltage Detection Method – Ensures reliable monitoring of phase conditions.\r \tSPDT Relay Output – Provides one SPDT relay output for system control.\r \tLED Status Indicators – Includes Power (PWR) and Relay (RY) LED indicators for easy monitoring.\r \tSlim Compact Design – 17.5 mm wide housing suitable for space-saving panel installation.\r \tDIN Rail Mounting – Easy installation on standard DIN tracks.\r \tGreater Resistance to Inverter Noise – Designed to perform reliably in environments with electrical noise.\r \tAutomatic Reset Function – Automatically resets once the fault condition is cleared.\r\rApplications\rThe SCU01 (K8DS-PH1) phase monitoring relay is used in electrical and industrial systems where reliable phase monitoring is required.\r\rCommon applications include:\r\r \tMotor protection systems\r \tIndustrial automation control panels\r \tThree-phase power supply monitoring\r \tMotor control circuits\r \tEquipment requiring phase sequence verification\r \tProtection against reverse motor operation\r \tMonitoring of phase loss in operating motors\r\rThis relay helps maintain correct phase order and detect phase failures, which are critical for maintaining proper operation of three-phase motors and electrical equipment.\rTechnical Specifications\rGeneral Specifications\r\r\r\rParameter\rSpecification\r\r\r\r\rModel\rK8DS-PH1\r\r\rProduct Code\rSCU01\r\r\rRelay Type\rSPDT Relay\r\r\rMonitoring Function\rPhase Sequence and Phase Loss\r\r\rRated Input Voltage\r3-phase, 200 to 480 VAC (3-wire)\r\r\rInput Frequency\r50 \/ 60 Hz\r\r\rInput Load\rApprox. 2.7 VA\r\r\rMounting\rDIN Track\r\r\rDimensions\r17.5 × 80 × 74 mm (W × D × H)\r\r\rWeight\rApprox. 60 g\r\r\r\rOperating Characteristics\r\r\r\rParameter\rValue\r\r\r\r\rPhase Sequence Operating Time\r0.1 s ± 0.05 s\r\r\rPhase Loss Operating Time\r0.1 s max.\r\r\rReset Method\rAutomatic reset\r\r\rIndicators\rPower (Green), Relay Output (Yellow)\r\r\r\rOutput Relay Specifications\r\r\r\rParameter\rValue\r\r\r\r\rRelay Type\rOne SPDT relay (NC operation)\r\r\rRated Load\r5 A at 250 VAC\r\r\rRated Load (DC)\r5 A at 30 VDC\r\r\rMaximum Switching Capacity\r1,250 VA \/ 150 W\r\r\rMinimum Load\r5 VDC, 10 mA (reference value)\r\r\r\rRelay Life\r\r\r\rParameter\rValue\r\r\r\r\rMechanical Life\rMinimum 10 million operations\r\r\rElectrical Life\r50,000 operations (5 A at 250 VAC \/ 30 VDC)\r\r\rElectrical Life\r100,000 operations (3 A at 250 VAC \/ 30 VDC)\r\r\r\rEnvironmental Specifications\r\r\r\rParameter\rSpecification\r\r\r\r\rOperating Temperature\r−20°C to 60°C\r\r\rStorage Temperature\r−25°C to 65°C\r\r\rOperating Humidity\r25% to 85% (no condensation)\r\r\rStorage Humidity\r25% to 85% (no condensation)\r\r\rMaximum Altitude\r2,000 m\r\r\r\rElectrical and Safety Specifications\r\r\r\rParameter\rSpecification\r\r\r\r\rInsulation Resistance\r20 MΩ min.\r\r\rDielectric Strength\r2,000 VAC for 1 minute\r\r\rNoise Immunity\rSquare-wave noise ±1 μs \/ 100 ns pulse width\r\r\rDegree of Protection\rIP20 (terminals)\r\r\rConforming Standards\rEN 60947-5-1\r\r\rSafety Standards\rUL 508, CSA C22.2 No.14, CCC\r\r\r\rBenefits of Using SCU01 (K8DS-PH1)\r\r \tReliable Phase Monitoring: The relay continuously monitors phase sequence and phase loss conditions. This ensures that electrical systems operate only under correct power conditions.\r \tProtection for Three-Phase Motors: Incorrect phase sequence can cause motors to rotate in the wrong direction. This relay helps prevent reverse motor operation, protecting equipment and reducing downtime.\r \tImproved System Safety: Detecting phase loss quickly helps avoid damage to connected equipment. The relay activates within a short operating time when abnormal conditions occur.\r \tEasy Installation: The 17.5 mm slim design allows installation in compact control panels. DIN rail mounting makes installation quick and convenient for industrial environments.\r \tClear Status Monitoring: The built-in LED indicators allow users to easily check power supply and relay output status, making troubleshooting and monitoring simple.\r \tStable Operation in Industrial Environments: The relay offers greater resistance to inverter noise, which improves reliability in automation systems and electrical control panels.\r\rWhy Choose SCU01 (K8DS-PH1) from E Control Devices\rE Control Devices supplies genuine Omron industrial automation components. As an authorised distributor of Omron, the company provides reliable products along with professional support for industrial automation and electrical protection applications.\r\rThe SCU01 (K8DS-PH1) relay is designed to deliver accurate phase monitoring, protect motors from incorrect phase conditions, and maintain the stability of three-phase power systems.","brand":"Phase-sequence Phase-loss Relay","offers":[{"title":"Default Title","offer_id":43327757418585,"sku":"ECDREL0278","price":0.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/5659\/2729\/files\/K8DS-PH.jpg?v=1779109185","url":"https:\/\/econtroldevices.com\/products\/scu01-k8ds-ph1-phase-sequence-phase-loss-relay","provider":"Econtroldevices","version":"1.0","type":"link"}