The **HRS-5Z-R** is a specific type of electromechanical relay, typically manufactured by companies like **HKE (Zhejiang HKE Relay)**. It is widely used in control systems and household appliances due to its compact size and high switching capacity. --- ### 1. Key Technical Specifications Below is a breakdown of the typical technical parameters for the HRS-5Z-R series: | Parameter | Specification | | :--- | :--- | | **Contact Form** | 1C (SPDT - Single Pole Double Throw) | | **Contact Material** | Silver Alloy (AgSnO2 or AgNi) | | **Max Switching Current** | 3A to 5A (model dependent) | | **Max Switching Voltage** | 250VAC / 30VDC | | **Nominal Coil Power** | Approx. 200mW to 450mW | | **Dielectric Strength** | 1,000VAC (between open contacts) | | **Mechanical Life** | 10,000,000 operations | | **Mounting Type** | Through-hole PCB Mount | --- ### 2. Internal Components and Construction The HRS-5Z-R consists of several critical electronic and mechanical parts: 1. **Electromagnetic Coil:** A copper wire winding that creates a magnetic field when energized. The "R" in the suffix often denotes high sensitivity or specific resistance ratings. 2. **Armature:** The moving metal part that is attracted by the coil's magnetic field. 3. **Spring Mechanism:** Returns the armature to its original position once power is removed from the coil. 4. **Contacts:** * **Common (COM):** The moving terminal. * **Normally Closed (NC):** The terminal connected to COM when the coil is OFF. * **Normally Open (NO):** The terminal that connects to COM only when the coil is ON. 5. **Sealed Housing:** Typically a plastic casing designed to protect the internals from dust and flux during soldering. --- ### 3. Part Number Decoding (HRS-5Z-R) * **HRS:** Series designation (Subminiature Sugar Cube Relay). * **5:** Often refers to the contact rating (5 Amps) or a specific voltage variant depending on the manufacturer's prefix. * **Z:** Contact form code (Z usually indicates **SPDT / Form C**). * **R:** Indicates specialized features, such as **RoHS Compliance** or **High Sensitivity** coil requirements. --- ### 4. Common Applications * **Home Automation:** Smart plugs, light switches, and motorized curtains. * **Industrial Controls:** PLC output modules and small motor starters. * **Consumer Electronics:** Microwave ovens, air conditioners, and audio equipment power management.