The **GS220A20-R7B** is a high-reliability, 220W AC-DC industrial desktop power supply manufactured by **MEAN WELL**. It belongs to the GS220 series and is designed for energy efficiency and high-power output for industrial and commercial equipment. ### 1. Key Technical Specifications The following table outlines the primary electrical characteristics of the GS220A20-R7B: | Parameter | Specification | | :--- | :--- | | **Output Voltage** | 20V DC | | **Output Current** | 11.0A | | **Rated Power** | 220 Watts | | **Input Voltage Range** | 90 ~ 264VAC (Universal) | | **Efficiency (Typ.)** | 92.5% | | **DC Connector Type** | Power DIN 4-Pin with lock (R7B) | | **AC Inlet Type** | IEC320-C14 (3-Pole) | --- ### 2. Core Electronic Features The internal circuitry and design of this unit focus on stability and safety: * **PFC (Power Factor Correction):** It features a built-in active PFC function (PF > 0.94), which reduces harmonic distortion and improves power efficiency from the AC source. * **Protection Mechanisms:** * **Short Circuit Protection:** Automatically recovers once the fault is removed. * **Overload Protection:** Limits output current to prevent internal component damage. * **Overvoltage Protection:** Shuts down the output if the voltage exceeds safety thresholds (typically 110-140%). * **Over Temperature Protection:** Built-in sensor to shut down the unit if the internal heat exceeds safe operating limits. * **No Load Power Consumption:** Designed for "green" compliance, it consumes less than **0.5W** when no device is connected. --- ### 3. Physical & Connection Layout The "R7B" suffix specifically refers to the output connector type: * **Connector Type:** 4-Pin Power DIN (KYCON KPPX-4P equivalent). * **Pin Assignment:** * Pins 1 & 2: Positive (+) Output. * Pins 3 & 4: Negative (-) Output. * **Case Material:** Fully enclosed 94V-0 flame-retardant plastic case. * **Cooling:** Passive cooling (convection); no internal fans, which ensures silent operation. --- ### 4. Compliance and Standards This part is engineered to meet strict international standards for safety and environment: * **Safety:** UL62368-1, CSA C22.2, TUV EN62368-1. * **EMC Emission:** Compliance with EN55032 Class B (Conducted and Radiated). * **Energy Level:** Meets VI efficiency levels (DOE Level VI).