The part number **W2SP-2AC-R2/N** (often associated with manufacturers like **Eaton** or **Cutler-Hammer**) refers to a specific configuration of a **W2 Series Miniature Circuit Breaker** or related power distribution component. Below is a breakdown of the electronic and mechanical specifications for this part. --- ## 1. Part Number Breakdown Understanding each segment of the code reveals the electrical characteristics of the device: | Segment | Description | Detail | | :--- | :--- | :--- | | **W2** | Series Designator | Miniature Circuit Breaker / Protector Series. | | **SP** | Pole Configuration | Supplementary Protector (usually single pole, but check physical unit). | | **2AC** | Current/Voltage Rating | Typically indicates 2 Amps at AC voltage levels. | | **R2** | Mounting/Terminals | Refers to DIN Rail mounting or specific terminal screw types. | | **SLASHN** | Special Feature | Often denotes a Neutral pole or a specific high-interrupt capacity suffix. | --- ## 2. Technical Specifications These parts are designed for industrial control panels and OEM equipment. ### Electrical Characteristics * **Rated Current:** 2 Amperes. * **Rated Voltage:** Usually up to 277V AC (Single Pole) or 480V AC (Multi-pole). * **Interrupting Capacity:** Typically 5kA to 10kA depending on the specific standard (UL 1077). * **Trip Curve:** These units often come in "C" or "D" curves, designed to handle small inductive surges without nuisance tripping. ### Physical Attributes * **Mounting:** Standard 35mm DIN Rail. * **Housing:** Thermal-plastic, flame retardant. * **Indicator:** Visual trip window (Green/Red) to show contact status. --- ## 3. Comparison with Standard Circuit Breakers Unlike a standard residential breaker, the **W2SP** series is a "Supplementary Protector." | Feature | Supplementary Protector (W2SP) | Branch Circuit Breaker | | :--- | :--- | :--- | | **Application** | Protection inside a machine/appliance. | Protection of the building wiring. | | **UL Rating** | UL 1077 | UL 489 | | **Reset** | Manual toggle. | Manual toggle. | | **Sensitivity** | Higher precision for low-current electronics. | General protection for outlets/lights. | --- ## 4. Common Use Cases 1. **PLC Protection:** Protecting sensitive Programmable Logic Controllers from overcurrent. 2. **Solenoid/Valve Protection:** Guarding small inductive loads in automated systems. 3. **Power Supplies:** Secondary side protection for 24VDC or 120VAC power units. ---