The designation **1-N-R** is typically used in the context of **Electromechanical Power Relays** or high-current switching components. It is a technical shorthand used by manufacturers (such as Panasonic, Omron, or TE Connectivity) to describe the configuration and sensitivity of the device. --- ### 1. Breakdown of the "1-N-R" Designation In most industrial catalogs, the code breaks down as follows: | Component Code | Meaning | Technical Description | | :--- | :--- | :--- | | **1** | **Contact Form** | Refers to **1 Form A** (Single Pole Single Throw - Normally Open). | | **N** | **Sensitivity** | Represents a **Standard** or **Non-polarized** coil type. | | **R** | **Mounting/Protection** | Usually indicates **Flux-resistant** or **Right-angle** terminals depending on the series. | --- ### 2. Core Components of these Parts Relays categorized under this nomenclature generally consist of four primary electronic/mechanical parts: 1. **The Coil (Input):** A copper wire wound around a core. When current flows, it creates a magnetic field. In "N" type relays, this is usually a standard power coil. 2. **The Armature:** A moving lever that reacts to the magnetic field. 3. **Contacts (Output):** The "1" signifies a single set of contacts. These are often made of **Silver Tin Oxide (AgSnO2)** to resist welding under high current loads. 4. **The Spring:** Returns the armature to the original position when power is removed. --- ### 3. Technical Specifications These parts are commonly found in household appliances (HVAC, microwaves) and industrial controllers. | Feature | Typical Value | | :--- | :--- | | **Switching Voltage** | 250V AC / 30V DC | | **Contact Rating** | 5A to 16A (depending on the specific model) | | **Coil Voltage** | 5V, 12V, or 24V DC | | **Electrical Life** | >100,000 operations | --- ### 4. Circuit Example (Internal View) Below is a representation of how a **1-N-R** relay is wired internally: ```text [Coil Terminals] (o)---(o) | ________|________ | | | / [Contact]|---- (Pin 1: NO) | ---o | | | |---- (Pin 2: COM) |_________________| ``` --- ### 5. Common Series Examples - **Panasonic JW Series:** Often uses "1-N" to denote high-capacity 1-form-A relays. - **Omron G5Q Series:** Uses similar suffixes to denote internal insulation and venting.