{"product_id":"new-leroy-somer-ls-is-s08-7-terminal-brake-rectifier-power-module","title":"LEROY SOMER LS IS S08 7-Terminal Brake Rectifier Power Module","description":"\u003cdiv class=\"product-description-container\" style=\"font-family: 'Segoe UI', Arial, sans-serif; line-height: 1.6; color: #333;\"\u003e\n\n    \u003cp\u003eThe \u003cstrong\u003eLeroy Somer LS IS S08\u003c\/strong\u003e is a high-performance \u003cstrong\u003e7-terminal brake rectifier module\u003c\/strong\u003e specifically engineered for the rapid and precise control of electromagnetic brakes on LS series motors. Featuring a unique 7-pin configuration, the \u003cstrong\u003eLS IS S08 rectifier\u003c\/strong\u003e supports both standard and fast-action braking modes by integrating auxiliary contacts for DC-side switching. Whether you are sourcing an \u003cstrong\u003eLS IS S08 replacement\u003c\/strong\u003e for a factory hoist or optimizing a high-cycle conveyor system, this Leroy Somer power module ensures thermal stability and reliable torque release for industrial-grade motor applications.\u003c\/p\u003e\n\n    [Image of Leroy Somer brake rectifier wiring diagram]\n\n    \u003chr style=\"border: 0; height: 1px; background: #eee; margin: 20px 0;\"\u003e\n\n    \u003ch3 style=\"color: #0056b3; border-left: 4px solid #16c8c8; padding-left: 12px; margin-top: 25px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n    \u003cdiv style=\"overflow-x: auto;\"\u003e\n        \u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 15px; border: 1px solid #e1e1e1;\"\u003e\n            \u003cthead\u003e\n                \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n                    \u003cth style=\"padding: 12px; border: 1px solid #e1e1e1; text-align: left;\"\u003eParameter\u003c\/th\u003e\n                    \u003cth style=\"padding: 12px; border: 1px solid #e1e1e1; text-align: left;\"\u003eDetails\u003c\/th\u003e\n                \u003c\/tr\u003e\n            \u003c\/thead\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1; font-weight: bold;\"\u003eManufacturer \/ Brand\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003eLeroy Somer (Nidec)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background-color: #fafafa;\"\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003eLS IS S08 (7-Terminal)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1; font-weight: bold;\"\u003eInput Voltage Range\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003e230V - 460V AC (Application Dependent)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background-color: #fafafa;\"\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1; font-weight: bold;\"\u003eNumber of Terminals\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003e7 Pins (Optimized for Fast Braking)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1; font-weight: bold;\"\u003eFunction\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003eFull-wave \/ Half-wave Rectification\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background-color: #fafafa;\"\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1; font-weight: bold;\"\u003eEnclosure Rating\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003eIP20 \/ Encapsulated Protection\u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003ch3 style=\"color: #0056b3; border-left: 4px solid #16c8c8; padding-left: 12px; margin-top: 30px;\"\u003eAdvanced 7-Terminal Control Logic\u003c\/h3\u003e\n    \u003cp\u003eThe \u003cstrong\u003eLS IS S08 power module\u003c\/strong\u003e distinguishes itself from standard 4-pin rectifiers through its dedicated switching logic terminals. These extra terminals allow for the connection of external contactors that break the DC circuit directly, enabling \"Fast Braking\" which is critical for safety in vertical lifting or emergency stop scenarios. As a robust \u003cstrong\u003eindustrial motor part\u003c\/strong\u003e, the LS IS S08 is encapsulated in high-grade epoxy to resist mechanical vibration and oil mist. Replacing a damaged unit with an authentic \u003cstrong\u003eLeroy Somer repair part\u003c\/strong\u003e ensures that your motor's brake coil receives the correct holding voltage, preventing excessive heat and premature coil burnout.\u003c\/p\u003e\n\n    \u003cdiv class=\"koeed-tool-container\" style=\"margin: 40px 0; padding: 25px; border: 2px solid #16c8c8; border-radius: 8px; background-color: #f9fbfc;\"\u003e\n        \u003ch3 style=\"color: #0056b3; margin-top: 0;\"\u003e🛠️ LS IS S08 Wiring \u0026amp; Response Simulator\u003c\/h3\u003e\n        \u003cp style=\"font-size: 14px;\"\u003eSimulate how different terminal connections affect the brake response time (Normal vs. Fast).\u003c\/p\u003e\n        \n        \u003cdiv style=\"margin-bottom: 20px;\"\u003e\n            \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 5px;\"\u003eSelect Braking Mode:\u003c\/label\u003e\n            \u003cselect id=\"brakeMode\" style=\"width: 100%; padding: 8px; border-radius: 4px; border: 1px solid #ccc;\"\u003e\n                \u003coption value=\"normal\"\u003eStandard (AC-Side Switching)\u003c\/option\u003e\n                \u003coption value=\"fast\"\u003eFast Action (DC-Side Switching \/ 7-Pin Logic)\u003c\/option\u003e\n            \u003c\/select\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 10px;\"\u003e\n            \u003cdiv style=\"padding: 15px; background: #fff; border: 1px solid #ddd; border-radius: 4px; text-align: center;\"\u003e\n                \u003cstrong style=\"color: #333;\"\u003eResponse Time\u003c\/strong\u003e\n                \u003cp style=\"font-size: 22px; margin: 10px 0; color: #d32f2f;\"\u003e\u003cspan id=\"responseTime\"\u003e250\u003c\/span\u003e ms\u003c\/p\u003e\n                \u003csmall style=\"color: #777;\"\u003eTypical Delay\u003c\/small\u003e\n            \u003c\/div\u003e\n            \u003cdiv style=\"padding: 15px; background: #fff; border: 1px solid #16c8c8; border-radius: 4px; text-align: center;\"\u003e\n                \u003cstrong style=\"color: #333;\"\u003eSafety Rating\u003c\/strong\u003e\n                \u003cp style=\"font-size: 22px; margin: 10px 0; color: #0056b3;\"\u003e\u003cspan id=\"safetyRating\"\u003eStandard\u003c\/span\u003e\u003c\/p\u003e\n                \u003csmall style=\"color: #777;\"\u003eIndustrial Context\u003c\/small\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n        \n        \u003cdiv id=\"wiringAlert\" style=\"margin-top: 15px; padding: 10px; font-size: 13px; font-weight: bold; text-align: center; border-radius: 4px; background: #e3f2fd; color: #0d47a1;\"\u003e\n            Recommendation: Use terminals 5, 6, 7 for fast-braking contactor loops.\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003ch3 style=\"color: #0056b3; border-left: 4px solid #16c8c8; padding-left: 12px; margin-top: 30px;\"\u003eLS IS S08 Troubleshooting FAQ\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 20px;\"\u003e\n        \u003cli\u003e\n\u003cstrong\u003eBrake fails to release despite AC power?\u003c\/strong\u003e Check the DC output voltage across the brake coil terminals (typically terminals 3 and 4). If AC input is present but DC is zero, the internal diode bridge of the \u003cstrong\u003eLS IS S08 module\u003c\/strong\u003e has likely failed. Also, verify that the 7-terminal jumper configuration matches your specific motor's voltage requirements.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eBrake release is slow or sluggish?\u003c\/strong\u003e This is common if a 7-terminal rectifier is wired for standard AC switching when the application requires fast action. Ensure that the \u003cstrong\u003efast-braking terminals\u003c\/strong\u003e are integrated with an auxiliary contact from the motor starter. For \u003cstrong\u003eLS IS S08 troubleshooting\u003c\/strong\u003e, check for voltage drops in the brake cable if the motor is far from the control cabinet.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eRectifier is overheating or melting?\u003c\/strong\u003e Overheating usually points to an incorrect voltage match (e.g., applying 400V AC to a 230V rated rectifier) or a partially shorted brake coil. A shorted coil will pull excessive current through the \u003cstrong\u003eLeroy Somer rectifier\u003c\/strong\u003e, leading to thermal runaway. Always measure coil resistance before installing a new S08 module.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\n    const brakeMode = document.getElementById('brakeMode');\n    const responseTime = document.getElementById('responseTime');\n    const safetyRating = document.getElementById('safetyRating');\n    const wiringAlert = document.getElementById('wiringAlert');\n\n    function updateBrakeSim() {\n        const mode = brakeMode.value;\n        \n        if (mode === 'fast') {\n            responseTime.innerText = \"40-60\";\n            safetyRating.innerText = \"High (Critical)\";\n            responseTime.style.color = \"#2e7d32\";\n            wiringAlert.innerText = \"Logic: DC circuit is broken immediately. Ideal for Hoists \u0026 Cranes.\";\n            wiringAlert.style.background = \"#e8f5e9\";\n            wiringAlert.style.color = \"#2e7d32\";\n        } else {\n            responseTime.innerText = \"200-300\";\n            safetyRating.innerText = \"Standard\";\n            responseTime.style.color = \"#d32f2f\";\n            wiringAlert.innerText = \"Logic: AC-side switching only. Suitable for fans and standard pumps.\";\n            wiringAlert.style.background = \"#e3f2fd\";\n            wiringAlert.style.color = \"#0d47a1\";\n        }\n    }\n\n    brakeMode.addEventListener('change', updateBrakeSim);\n    updateBrakeSim();\n\u003c\/script\u003e","brand":"LEROY","offers":[{"title":"Default Title","offer_id":44388407902393,"sku":"403883890787","price":138.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8476\/7929\/files\/s-l1600_7cbee023-cb98-4cef-a4b4-9f7973b69dad.jpg?v=1722430345","url":"https:\/\/koeed.com\/el\/products\/new-leroy-somer-ls-is-s08-7-terminal-brake-rectifier-power-module","provider":"KOEED","version":"1.0","type":"link"}