The **8736SDO2V01S** is a specific model of a NEMA-rated motor starter manufactured by **Schneider Electric (Square D)**. This device is a reversing magnetic starter used to control AC motors by starting, stopping, and changing the direction of rotation. Below is a breakdown of its electronic and electromechanical components. --- ### 1. Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Manufacturer** | Schneider Electric (Square D) | | **NEMA Size** | Size 2 | | **Continuous Current Rating** | 45 Amperes | | **Type** | Reversing Starter (Type S) | | **Pole Configuration** | 3-Pole | | **Coil Voltage (V01S)** | 24V AC, 60 Hz | | **Enclosure Type** | Open (No NEMA 1/3R/12 housing included) | | **Phase** | 3-Phase | --- ### 2. Key Component Analysis #### A. The Magnetic Contactors The core of the unit consists of two interlocking magnetic contactors. - **Function:** One contactor handles the "Forward" rotation, and the second handles the "Reverse" rotation. - **Mechanical Interlock:** A critical safety component that physically prevents both contactors from closing at the same time, which would cause a phase-to-phase short circuit. #### B. The Control Coil (V01S Designation) The "V01S" suffix indicates the specific electrical requirements for the electromagnetic coil: - **Voltage:** It operates on **24V AC**. - **S-Suffix:** Often indicates a specific separate control circuit capability or a customized wiring configuration for the control transformer interface. #### C. Power Poles and Contacts - **Material:** High-conductivity silver cadmium oxide contacts designed to resist welding and pitting under high inductive loads. - **Capacity:** Rated for NEMA Size 2, capable of handling motors up to **15 HP at 230V** or **25 HP at 460V/575V**. #### D. Overload Protection (Sold Separately or Modular) While the 8736 series is a starter, it requires **Overload Relays** (typically the Motor Logic solid-state version or thermal melting alloy blocks) to monitor the current. - **Electronic Sensing:** If equipped with a solid-state overload, it uses internal current transformers to monitor the line current and will trip the control circuit if an anomaly is detected. --- ### 3. Application and Wiring Because this is an **"Open"** type device, it is intended to be mounted inside a larger control panel or MCC (Motor Control Center). - **L1, L2, L3:** Line input power. - **T1, T2, T3:** Output power to the motor. - **Control Circuit:** The 24V AC signal triggers the solenoid, pulling the armature in to close the high-power contacts.