The **8736SDO2V06H30** is a specific model of a **Reversing Magnetic Starter** from the Square D (Schneider Electric) Type S line. These devices are used to start, stop, and reverse the direction of three-phase AC motors while providing overload protection. Below is a breakdown of its electronic and electromechanical parts: ### 1. General Specifications | Feature | Detail | | :--- | :--- | | **Manufacturer** | Square D (Schneider Electric) | | **Type** | S (NEMA Rated) | | **NEMA Size** | 2 (45 Amperes) | | **Configuration** | Reversing | | **Enclosure Type** | Open (No outer box included) | | **Phase** | 3-Phase | --- ### 2. Key Internal Components #### A. Contactor Assembly (The Switching Mechanism) This unit consists of two interconnected contactors—one for "Forward" and one for "Reverse." * **Contacts:** High-conductivity silver alloy points designed to handle high inrush currents. * **Mechanical Interlock:** A physical safety mechanism that prevents both the forward and reverse contactors from closing at the same time, which would cause a phase-to-phase short circuit. #### B. The Coil (V06 Code) The "V06" in the part number identifies the control voltage for the electromagnetic coil. * **Voltage:** 480V AC @ 60Hz / 440V AC @ 50Hz. * **Function:** When energized, the coil creates a magnetic field that pulls the power contacts closed to start the motor. #### C. Motor Logic Solid-State Overload Relay (H30 Code) The "H30" suffix indicates that this starter is equipped with a **Motor Logic** solid-state overload relay. * **Electronic Sensing:** Unlike traditional thermal heaters (bimetallic), this uses internal sensors to monitor current flow. * **Trip Class:** Usually selectable (Class 10/20), protecting the motor from overheating or phase loss. * **Adjustability:** Features a dial to set the Full Load Amps (FLA) to match the specific motor nameplate. --- ### 3. Part Number Nomenclature Breakdown | Code | Meaning | | :--- | :--- | | **8736** | Reversing Starter (NEMA Type) | | **S** | Series / Frame Style | | **D** | NEMA Size 2 (Handles up to 25 HP @ 480V) | | **O** | Open Style Enclosure (for mounting inside another panel) | | **2** | 3-Pole Power Configuration | | **V06** | 480V 60Hz / 440V 50Hz Control Voltage | | **H30** | Solid-State Overload Relay (Motor Logic) | --- ### 4. Application Logic This device is typically used in industrial environments for: * **Conveyor Belts:** To move items forward and backward. * **Hoists/Cranes:** To lift and lower loads. * **Large Valves:** To open and close motorized actuators.