{"product_id":"342a4920-general-electric-cpci-3u-power-supply-rack-module","title":"342A4920 General Electric CPCI 3U Power Supply Rack Module","description":"\u003ch3\u003e\u003cstrong\u003eGE 342A4920 CPCI Power Supply Architecture\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #2b6cb0;\"\u003e\u003cstrong\u003e342A4920\u003c\/strong\u003e\u003c\/span\u003e CompactPCI (CPCI) power supply engineered by \u003cspan style=\"color: #2b6cb0;\"\u003e\u003cstrong\u003eGeneral Electric\u003c\/strong\u003e\u003c\/span\u003e serves as a critical conversion module within heavy-duty automation frameworks. Designed for industrial enclosures, the \u003cspan style=\"color: #2b6cb0;\"\u003e\u003cstrong\u003e342A4920\u003c\/strong\u003e\u003c\/span\u003e accepts an incoming bulk voltage of 20 to 36 V DC and transforms it into regulated ±12 V DC, +5 V DC, and +3.3 V DC rails. These voltage rails directly power backplane circuitry, controller cards, and internal chassis cooling fans.\u003c\/p\u003e\n\u003cp\u003eBuilt to CPCI Rev 2.11 hot-swap specifications, the unit integrates a Positronics 47-pin connector allowing live insertion and extraction without de-energizing the rack. Active current sharing and remote sensing on the +5 V DC and +3.3 V DC outputs—combined with internal o-ring FETs—facilitate reliable N+1 redundant parallel operations in dual-supply configurations.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications Matrix\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"text-align: left;\"\u003eEngineering Parameter\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eModule Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand \u0026amp; Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eGeneral Electric (GE)\u003c\/strong\u003e, \u003cspan style=\"color: #2b6cb0;\"\u003e\u003cstrong\u003eCPCI Series\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color: #2b6cb0;\"\u003e\u003cstrong\u003e342A4920\u003c\/strong\u003e\u003c\/span\u003e (3U Form Factor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 to 36 V DC incoming bulk power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Output Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 W (De-rated for 65°C operation and 10,000 ft altitude)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDC Output Rails\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±12 V DC, +5 V DC, +3.3 V DC via 47-pin Positronics connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRedundancy \u0026amp; Sharing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eActive current share and remote sense on +5V\/+3.3V; o-ring diodes on ±12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic system shut-down with auto-reset upon internal temperature recovery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver-Voltage Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLatch-style protection triggered at 110% to 130% of nominal voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShort Circuit Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFully protected output overload with automatic recovery upon fault clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTemperature: 0 to +65°C (+32 to +149°F); Humidity: 5 to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAltitude Limits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOperating: 0 to 10,000 ft (3,000 m); Storage: 0 to 50,000 ft (12,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVibration \u0026amp; Shock Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRandom vibration 10 Hz to 2 kHz across 3 axes (1 GRMS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRegulatory Standards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 1950, EN60950 (TUV), EN61000-4 series EMC compliance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eMechanical Installation and Extraction Protocol\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnlocking Sequence:\u003c\/strong\u003e Loosen the two retaining screws on the faceplate, noting that the bottom screw sits directly beneath the black ejection lever.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLever Release:\u003c\/strong\u003e Press downward on the internal red tab housed inside the black ejection lever to disengage the locking mechanism.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Disconnection:\u003c\/strong\u003e Push the black release lever down fully to unseat the 47-pin connector from the CPCI backplane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsertion Procedure:\u003c\/strong\u003e Slide the \u003cspan style=\"color: #2b6cb0;\"\u003e\u003cstrong\u003e342A4920\u003c\/strong\u003e\u003c\/span\u003e smoothly into the chassis guide rails until flush, then lift the black lever upward until the red safety tab snaps into place.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight and Field Engineering Experience\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen performing hot-swap replacements of the \u003cspan style=\"color: #2b6cb0;\"\u003e\u003cstrong\u003e342A4920\u003c\/strong\u003e\u003c\/span\u003e power supply in active industrial racks, field technicians must verify that the enclosure's auxiliary distribution bus remains within the 20 to 36 V DC window. A common oversight during dual-supply maintenance is failing to secure the top and bottom mounting screws after engaging the mechanical ejection lever; loose screws impair chassis grounding, inducing high-frequency electromagnetic interference (EMI) across the backplane.\u003c\/p\u003e\n\u003cp\u003eIn high-vibration turbine environments, our engineering audits revealed that unsecured faceplate screws lead to micro-arcing on the 47-pin Positronics interface pins. Always torque both securing screws firmly after installation to maintain solid chassis continuity and ensure reliable active current sharing between parallel modules.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTarget Equipment and Industrial Application Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMark VIe Control Racks:\u003c\/strong\u003e Delivers stable rack-level power for core controller processor slots and communication cards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Gas Turbines:\u003c\/strong\u003e Powers heavy-duty I\/O termination racks operating in high-temperature, vibration-heavy turbine skids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributed Control Systems (DCS):\u003c\/strong\u003e Energizes multi-slot CompactPCI subracks in oil and gas pumping stations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDiagnostic Capabilities and Protection Mechanisms\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Shutdown Diagnostics:\u003c\/strong\u003e Automatically cuts output power during internal overheating, resetting once temperatures normalize.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLatch-Style Over-Voltage Monitoring:\u003c\/strong\u003e Tripping mechanism engages if output voltages exceed 110% to 130% of nominal ratings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Overload Recovery:\u003c\/strong\u003e Internal current limiting protects against dead shorts, restoring power automatically once shorts are cleared.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePackage Contents, Warranty, and Express Logistics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContents Checklist:\u003c\/strong\u003e One factory-tested \u003cspan style=\"color: #2b6cb0;\"\u003e\u003cstrong\u003e342A4920\u003c\/strong\u003e\u003c\/span\u003e CPCI power supply module packed in anti-static shielding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Protection:\u003c\/strong\u003e Backed by a comprehensive 12-month replacement warranty from the invoice date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Fulfillment:\u003c\/strong\u003e Express worldwide dispatch within 24 to 48 hours via FedEx, UPS, or DHL air freight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eStrategic Selection and Purchasing Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Load Calculation:\u003c\/strong\u003e Total the power draw of all installed modules in your CPCI rack to ensure total demand remains within the 150W de-rated envelope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedundancy Planning:\u003c\/strong\u003e For critical processes, populate both bays in the dual CPCI rack to leverage active current sharing and uninterrupted N+1 uptime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Compatibility:\u003c\/strong\u003e Confirm that your local rack bulk power source supplies a stable DC voltage within the 20V to 36V operating window.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the 342A4920 power supply be replaced while the industrial rack is fully powered?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the \u003cspan style=\"color: #2b6cb0;\"\u003e\u003cstrong\u003e342A4920\u003c\/strong\u003e\u003c\/span\u003e is CPCI Rev 2.11 hot-swap compliant, allowing safe removal and insertion without shutting down the entire rack.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What causes the 342A4920 unit to trigger its internal over-temperature shutdown?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Excessive internal temperatures—often caused by blocked airflow or exceeding the 65°C operating limit—will initiate a safe shutdown until internal components cool.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do dual 342A4920 units share electrical load in a CPCI chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Active current sharing on the +5V and +3.3V rails combined with o-ring FETs and diodes on the ±12V rails balance the load smoothly across parallel modules.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance check prevents intermittent power drops on the 47-pin interface?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Always verify that the top and bottom mechanical retention screws are fully tightened after locking the ejection lever to prevent micro-vibrations on the Positronics connector.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the 150W output rating require de-rating in high-altitude environments?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, output power is de-rated when operating at maximum operating temperatures of 65°C or at high altitudes up to 10,000 feet.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/342A4920.png?v=1793256299\" alt=\"\"\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":67936021774518,"sku":"342A4920","price":105.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/342A4920.jpg?v=1793256265","url":"https:\/\/www.plcsparehub.com\/products\/342a4920-general-electric-cpci-3u-power-supply-rack-module","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}