The **48NDR-2C16-R** is a specific model of an **Electromechanical Power Relay**, typically manufactured by brands like **Goodsky** or similar industrial relay providers. It is widely used in automation and control circuits for switching high-current loads. ### 1. Part Number Breakdown Understanding the nomenclature helps define the component's capabilities: | Code | Meaning | Description | | :--- | :--- | :--- | | **48** | Coil Voltage | Operates at **48V DC**. | | **NDR** | Series Name | High-capacity miniature power relay series. | | **2C** | Contact Form | **DPDT** (Double Pole Double Throw). | | **16** | Current Rating | Rated for up to **16 Amps**. | | **R** | Feature/RoHS | Usually denotes **RoHS compliance** or a specific mounting style. | --- ### 2. Technical Specifications The following table summarizes the key electrical and physical characteristics: | Feature | Specification | | :--- | :--- | | **Coil Voltage** | 48V DC | | **Contact Arrangement** | 2 Form C (DPDT) | | **Max Switching Current** | 16A | | **Max Switching Voltage** | 250V AC / 30V DC | | **Contact Material** | AgSnO2 (Silver Tin Oxide) for arc resistance | | **Mounting Type** | Through-hole PCB Mount | | **Dielectric Strength** | ~5,000V AC (between coil and contacts) | --- ### 3. Key Electronic Functions The 48NDR-2C16-R functions as an electrically operated switch: 1. **Isolation:** It provides high galvanic isolation between the low-voltage control circuit (48V coil) and the high-voltage load (up to 250V AC). 2. **DPDT Logic:** Since it is a Double Pole Double Throw relay, it can control two separate circuits simultaneously or reverse the polarity of a DC motor. 3. **Power Handling:** The 16A rating makes it suitable for heavy-duty appliances, heating elements, or industrial motors. --- ### 4. Common Applications * **Industrial Controls:** PLC output buffering and motor starters. * **HVAC Systems:** Controlling fans, compressors, and heaters. * **Power Supplies:** Used in UPS (Uninterruptible Power Supplies) for path switching. * **Domestic Appliances:** High-power kitchen equipment or washing machines.