The **REBS-H0-R** is an electronic component primarily classified as a **Bimetallic Thermal Protector (Thermostat)**. It is widely used in automotive, industrial, and consumer electronics to protect circuits from overheating by physical disconnection. --- ## 1. Technical Specifications The "REBS" series typically features high-current capability and a robust ceramic or metallic housing. Below are the general specifications for this specific model: | Parameter | Specification | | :--- | :--- | | **Component Type** | Thermal Cut-out / Bimetallic Protector | | **Reset Type** | Automatic Reset | | **Contact Type** | Normally Closed (NC) - Opens on Temp Rise | | **Current Rating** | Up to 15A - 30A (Depending on Voltage) | | **Operating Temp** | Fixed (Varies by sub-model, usually 70°C to 150°C) | | **Tolerance** | ±5°C | --- ## 2. Internal Electronic Structure The REBS-H0-R operates on a purely mechanical-electronic principle without the need for an external power supply: 1. **Bimetal Disc:** The core element is a concave bimetallic disc made of two metals with different thermal expansion coefficients. 2. **Contact Points:** High-conductivity silver-alloy contacts remain closed under normal conditions. 3. **Housing:** Usually a high-temperature resistant resin or ceramic casing to provide electrical insulation. 4. **Action Mechanism:** When the ambient temperature reaches the "Trip Point," the bimetal disc snaps to an inverted shape, pushing a pin that separates the contacts and breaks the circuit. --- ## 3. Typical Applications The REBS-H0-R is commonly found in environments where safety and thermal management are critical: * **Automotive Motors:** Window lifters, wiper motors, and seat adjusters to prevent burnout if the motor stalls. * **Power Supplies:** Overheat protection for high-wattage transformers and rectifiers. * **Home Appliances:** Used in heaters, coffee makers, and hair dryers as a primary safety switch. * **Battery Packs:** Protecting Li-ion or NiMH packs from thermal runaway during charging/discharging. --- ## 4. Part Number Breakdown (Typical) While manufacturers vary slightly, the "REBS" code usually implies specific characteristics: ```text REBS - H0 - R | | | | | +-- "R" usually indicates RoHS Compliance or Automatic Reset | +------- "H0" refers to the Mounting Style (Horizontal/Lead type) +-------------- Series Name (Heavy Duty Bimetal Protector) ``` ---