{"product_id":"new-sk-mk146j40rl-mk305j40rl-mk205j40rl-mk155j40rl-starting-capacitor","title":"New SK MK305J40RL Starting Capacitor","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\u003eSK MK305J40RL\u003c\/strong\u003e is a high-performance \u003cstrong\u003emotor starting and running capacitor\u003c\/strong\u003e engineered for AC single-phase induction motors. Specifically designed for stability in power electronics, the \u003cstrong\u003eMK305J40RL capacitor\u003c\/strong\u003e provides the necessary phase shift for motor startup and continuous operation. Whether you are sourcing an \u003cstrong\u003eMK305J40RL replacement\u003c\/strong\u003e for an industrial pump or seeking a high-performance \u003cstrong\u003eequivalent to specialized AC capacitors\u003c\/strong\u003e, this SK unit ensures reliable energy storage and low dissipation factors.\u003c\/p\u003e\n\n    \u003chr style=\"border: 0; height: 1px; background: #eee; margin: 20px 0;\"\u003e\n\n    \u003ch3 style=\"color: #0056b3; border-left: 4px solid #0056b3; 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: #f4f7f9;\"\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;\"\u003eModel Number\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003eMK305J40RL\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;\"\u003eNominal Capacitance\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003e3.0 µF (Code: 305)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1; font-weight: bold;\"\u003eRated Voltage\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003e400V - 450V AC (Standard Series)\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;\"\u003eTolerance\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003e±5% (J Tolerance)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1; font-weight: bold;\"\u003eOperating Frequency\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003e50 \/ 60 Hz\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;\"\u003eDielectric\u003c\/td\u003e\n                    \u003ctd style=\"padding: 10px; border: 1px solid #e1e1e1;\"\u003eMetallized Polypropylene Film (Self-healing)\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 #0056b3; padding-left: 12px; margin-top: 30px;\"\u003eIndustrial Power Stability\u003c\/h3\u003e\n    \u003cp\u003eThe \u003cstrong\u003eMK305J40RL series\u003c\/strong\u003e is widely utilized in HVAC fan motors, water pumps, and small industrial compressors where high torque and low heat generation are required. Its metallized film construction offers superior self-healing properties, ensuring the \u003cstrong\u003eSK capacitor\u003c\/strong\u003e can recover from transient voltage spikes without immediate failure. As a robust \u003cstrong\u003eindustrial electrical part\u003c\/strong\u003e, it is optimized for long service lives in high-temperature environments, making it a dependable \u003cstrong\u003erepair part\u003c\/strong\u003e for maintaining machine uptime.\u003c\/p\u003e\n\n    \u003ch3 style=\"color: #0056b3; border-left: 4px solid #0056b3; padding-left: 12px; margin-top: 30px;\"\u003eMK305J40RL Troubleshooting FAQ\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 20px;\"\u003e\n        \u003cli\u003e\n\u003cstrong\u003eMotor hums but won't start?\u003c\/strong\u003e This is the classic symptom of a failed \u003cstrong\u003eMK305J40RL starting capacitor\u003c\/strong\u003e. If the capacitance has dropped below the tolerance limit, the motor cannot generate enough starting torque. Use a capacitance meter to verify the 3.0µF rating.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003ePhysical swelling or leaking?\u003c\/strong\u003e If the \u003cstrong\u003eMK305J40RL housing\u003c\/strong\u003e is bulging or showing signs of liquid leakage, internal dielectric breakdown has occurred due to overvoltage or overheating. The unit must be replaced immediately to avoid motor winding damage.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003ePolarity and Wiring?\u003c\/strong\u003e This AC capacitor is non-polar, meaning wires can be connected to either terminal. However, ensure the voltage rating in your \u003cstrong\u003eMK305J40RL wiring diagram\u003c\/strong\u003e does not exceed the 400\/450V limit. Always discharge capacitors safely before maintenance.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"KOEED","offers":[{"title":"Default Title","offer_id":44248932909241,"sku":"166342766877","price":234.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8476\/7929\/files\/s-l1600_410890ab-866a-47c8-b1b0-c154f1ba767e.png?v=1723723464","url":"https:\/\/koeed.com\/ko\/products\/new-sk-mk146j40rl-mk305j40rl-mk205j40rl-mk155j40rl-starting-capacitor","provider":"KOEED","version":"1.0","type":"link"}