The **M2PE-13-R2/UL** is a specialized electronic component commonly used in industrial control systems and power distribution. It is primarily identified as a **Miniature Circuit Breaker (MCB)** or a **Supplementary Protector** manufactured by brands like Altech or similar industrial suppliers. Below is a detailed breakdown of its electronic characteristics and specifications. ### 1. Technical Specifications This component is designed to protect electrical circuits from overcurrents (overloads and short circuits). | Feature | Specification | | :--- | :--- | | **Number of Poles** | 2-Pole (DP) | | **Rated Current ($I_n$)** | 13 Amperes | | **Voltage Rating** | 277V AC (Single Pole) / 480Y/277V AC (Multi-pole) | | **Trip Curve** | Type E (High Inrush/Magnetic Trip) | | **Interrupt Capacity** | 10kA | | **Mounting Type** | DIN Rail (35mm) | | **Standard/Safety** | UL 1077 Recognized | --- ### 2. Key Electronic Features #### A. Trip Curve (Type E) The "E" designation in the part number refers to the specific trip characteristic. * **Thermal Trip:** Protects against long-term overloads. * **Magnetic Trip:** Protects against short circuits. Type E curves are typically designed for circuits with high inductive loads or specific industrial motor applications where high startup surges are expected. #### B. UL 1077 Compliance Unlike UL 489 breakers (which are "Branch Circuit Protectors"), the **UL 1077** rating classifies this as a **Supplementary Protector**. This means: * It is intended for use inside equipment (like PLCs, power supplies, or control panels). * It provides additional protection where branch circuit protection is already provided or not required. #### C. Two-Pole Configuration The "2" in the suffix usually denotes a two-pole configuration. This allows the device to disconnect both the Line and Neutral (or two phases) simultaneously, ensuring the entire downstream circuit is isolated during a fault. --- ### 3. Application Use Cases * **Industrial Automation:** Protecting PLC (Programmable Logic Controller) I/O modules. * **Power Supplies:** Serving as an input/output fuse replacement for sensitive power converters. * **Control Transformers:** Protecting the secondary side of industrial transformers. * **Semiconductor Equipment:** Often used in cleanroom machinery due to its compact DIN rail footprint. --- ### 4. Wiring and Installation ```mermaid graph LR Line_In1[Phase 1] --> Terminal1[Breaker Pole 1] Line_In2[Phase 2/N] --> Terminal2[Breaker Pole 2] Terminal1 --> Load1[Device L1] Terminal2 --> Load2[Device L2/N] ``` The device utilizes **pressure plate terminals**, allowing for secure connection of stranded or solid copper wires (typically 18-4 AWG depending on the specific frame).