{"product_id":"mitsubishi-electric-qs061p-a2-melsec-qs-series-safety-power-supply-unit","title":"Mitsubishi Electric QS061P-A2 MELSEC-QS Series Safety Power Supply Unit","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eProviding reliable logic power to fail-safe PLC architectures, the \u003cstrong\u003eMitsubishi Electric QS061P-A2\u003c\/strong\u003e safety power supply unit delivers regulated voltage specifically for MELSEC-QS Series control installations. This unit mounts directly onto the safety base unit to power the safety CPU and integrated I\/O infrastructure, ensuring high-availability operation under strict safety-instrumented parameters. With integrated diagnostics, including an active \u003cstrong\u003eERR contact\u003c\/strong\u003e, and robust overcurrent and overvoltage protections, it acts as the stable electrical foundation for critical industrial automation processes.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eDedicated safety-series design optimized for the \u003cstrong\u003eQS034B\u003c\/strong\u003e safety base unit.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eWide AC input range (AC 200 to 240 V) with high tolerance for momentary power interruptions up to 20 ms.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eHigh-capacity \u003cstrong\u003eDC 5V, 6 A\u003c\/strong\u003e output to feed demanding logic backplanes.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eIntegrated protection mechanisms including automatic overcurrent and overvoltage clamp circuits.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eDedicated diagnostic ERR relay contact for real-time remote status monitoring.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eClear front-panel LED diagnostics for visual status identification (Green for normal, Off for abnormal).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eAutomotive welding and assembly safety cells\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eHeavy industrial press and metal forming operations\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eLarge-scale material handling and automated logistics systems\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eFail-safe processing and chemical batch monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eSpecification Value\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMitsubishi Electric\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eQS061P-A2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eMounting Slot\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eQS Series Power Supply Slot\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCompatible Base Unit\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eQS034B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInput Supply Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eAC 200 - 240 V (-15% to +10%)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInput Frequency\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e50\/60 Hz (+\/- 5%)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInput Max Apparent Power\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e125 VA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInrush Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e20 A within 8 ms\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eRated Output (DC 5V)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e6.0 A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOvercurrent Protection\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e6.6 A or more\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOvervoltage Protection\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e5.5 to 6.5 V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eEfficiency\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eOver 70%\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eMomentary Power Failure Ride-Through\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eWithin 20 ms\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInsulation Resistance\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e10 MOhm or more (at 500V DC Megger)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eDielectric Withstand Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eAC 2830 Vrms \/ 3 cycles (Input-LG and Output-FG)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eExternal Dimensions (H x W x D)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e98 mm x 55.2 mm x 115 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eProduct Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0.40 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e1.4 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eTerminal \/ Port\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eFunctional Assignment \/ Rating\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eMain Supply Terminals\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eAC Line \/ Neutral (AC 200 - 240 V Input)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eLG Terminal\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eLine Ground (Noise Filter Ground)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eFG Terminal\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eFrame Ground (Chassis Ground)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eERR Contact\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eDiagnostic fault relay output (Rated DC 24 V, 0.5 A)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eTerminal Screws\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eM3.5 Threaded Connection type\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.25rem;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe QS061P-A2 is dedicated exclusively to the MELSEC-QS safety series platform. It is keyed physically and electrically to slot into the QS034B safety base unit and cannot be utilized on standard Q-Series (non-safety) base units. Trying to force insertion into a standard base unit can result in physical structural damage to the connector interfaces.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.25rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThis module features an inrush current envelope of 20 A lasting up to 8 ms. If powering multiple racks simultaneously, upstream circuit protection must be rated using D-curve or high-inrush magnetic delay breakers to avoid nuisance tripping during system hot-starts. Be mindful that the internal fuse is user-replaceable; however, a blown fuse typically points to an underlying backplane overcurrent fault that must be resolved before powering up again.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.25rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAlways ensure that the LG and FG terminals are tied to a dedicated functional ground path to prevent high-frequency noise from corrupting logic signals, which can manifest as inter-module communication errors. Use M3.5 ring-tongue terminals and torque all connections to the manufacturer standard of 0.68 to 0.98 N-m for optimal contact resistance.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 0.5rem;\"\u003eCRITICAL WARNING\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003eIsolate and lock out all primary AC power feeds before mounting or terminating this power supply. Verify zero-energy state with a calibrated voltage meter before handling connections. Failure to fully discharge power lines prior to termination can result in fatal electrical shocks and component destruction.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; color: #2d3748;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 24px; height: 24px; border-radius: 50%; display: inline-flex; justify-content: center; align-items: center; margin-right: 12px; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"margin: 0;\"\u003eHook the upper mounting tab of the module into the base unit's guide slot.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 24px; height: 24px; border-radius: 50%; display: inline-flex; justify-content: center; align-items: center; margin-right: 12px; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"margin: 0;\"\u003eFirmly press the bottom of the module onto the base unit until it clicks securely into place, ensuring the backplane connector is fully engaged.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 24px; height: 24px; border-radius: 50%; display: inline-flex; justify-content: center; align-items: center; margin-right: 12px; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"margin: 0;\"\u003eTighten the module fixing screw (M3) to ensure stability against high-vibration industrial environments.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 24px; height: 24px; border-radius: 50%; display: inline-flex; justify-content: center; align-items: center; margin-right: 12px; font-weight: bold;\"\u003e4\u003c\/div\u003e\n    \u003cp style=\"margin: 0;\"\u003eWire input terminals, LG, and FG using M3.5 terminal lugs, verifying polarity and tightening to the rated torque spec.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mitsubishi Electric","offers":[{"title":"Default Title","offer_id":53102231257451,"sku":"QS061P-A2","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/QS061P-A2-bk0um21ffcb.png?v=1776138014","url":"https:\/\/www.plcprotech.com\/id\/products\/mitsubishi-electric-qs061p-a2-melsec-qs-series-safety-power-supply-unit","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}