The **GST160A20-R7B** is a high-reliability, 160W AC-DC industrial desktop power supply manufactured by **Mean Well**. It is part of the GST series, which is known for its high efficiency and compliance with global energy-saving regulations. --- ### ## Technical Specifications Below are the primary electrical and mechanical characteristics of the GST160A20-R7B: | Parameter | Specification | | :--- | :--- | | **Output Voltage** | 20V DC | | **Output Current** | 0 ~ 8.0A | | **Rated Power** | 160W | | **Input Voltage Range** | 85 ~ 264 VAC (Universal) | | **Efficiency** | Up to 92.5% | | **Connector Type** | Power DIN 4-Pin with Lock (R7B) | | **Operating Temp.** | -30°C to +70°C | | **Safety Class** | Class I (with Earth Ground) | --- ### ## Key Electronic Features 1. **Energy Efficiency (Level VI):** The unit is designed to meet Level VI energy efficiency standards. It has an extremely low no-load power consumption (<0.15W), meaning it wastes very little energy when the device it is powering is turned off or in standby. 2. **Protection Circuitry:** The internal PCB includes several protection layers to prevent damage to both the power supply and the connected load: * **Short Circuit Protection:** Automatic recovery after the fault is removed. * **Overload Protection:** Limits current to 105% ~ 135% of rated output power. * **Over Voltage Protection:** Shuts down the output if voltage exceeds safety thresholds (typically 21V~27V). * **Over Temperature Protection:** Shuts down the unit if internal components exceed safe thermal limits. 3. **Active PFC (Power Factor Correction):** The GST160A series includes a built-in active PFC function. This improves the power factor (typically >0.98 at 115VAC) and reduces harmonic current distortion, making it compliant with EN61000-3-2. 4. **The "R7B" Connector:** The suffix **R7B** refers to the specific DC output plug. It uses a **4-Pin Power DIN** connector with a locking mechanism to prevent accidental disconnection, which is common in industrial and medical peripheral equipment. --- ### ## Applications Because of its high stability and safety certifications, this part is commonly used in: * Industrial automation equipment. * Telecommunication devices. * Large-scale 3D printers or CNC machines. * High-end consumer electronics requiring 20V input.