The **SES-160-R/E2** is a specific technical configuration typically associated with **SACE Emax 2** series low-voltage power circuit breakers (manufactured by ABB). This designation refers to a high-performance electronic trip unit and its corresponding frame components. --- ## 1. Core Component Breakdown The "SES" designation usually refers to the **Electronic Trip Unit (Release)** and its specific protection features. | Part Category | Component Name | Function | | :--- | :--- | :--- | | **Electronic Release** | Ekip Touch/Hi-Touch | The "brain" that monitors current and manages tripping logic. | | **Current Sensors** | Rogowski Coils | Provide high-precision current measurement without saturation issues. | | **Rating Plug** | SES-160 | Defines the rated current ($I_n$) of the breaker (160A in this case). | | **Auxiliary Contacts** | E2.2 / E2 Series | Electronic micro-switches that signal the status of the breaker. | --- ## 2. Technical Specifications The electronic parts of this assembly are designed for digitalization and smart grid integration. ### Protection Functions (LSI/LSIG) * **L (Overload):** Adjustable trip threshold and time delay. * **S (Short-time delayed short circuit):** For selective coordination between breakers. * **I (Instantaneous short circuit):** Immediate trip for high-magnitude faults. * **G (Ground Fault):** Optional protection against earth leakage. ### Connectivity & Communication * **Bluetooth:** Allows technicians to configure settings via a smartphone/tablet without physical contact. * **Power Controller:** Integrated software to manage energy consumption and peak shaving. * **Measurement:** Internal electronic sensors measure Voltage, Current, Power Factor, and Total Harmonic Distortion (THD). --- ## 3. Electronic Architecture Table | Feature | Specification | | :--- | :--- | | **Power Supply** | Self-powered by current sensors or external 24V DC. | | **Display Type** | Color touchscreen (on Hi-Touch versions). | | **Accuracy** | Class 1 (Active Energy) according to IEC 61557-12. | | **Data Logging** | Internal memory for trip history and event logging. | --- ## 4. Maintenance and Safety Because these parts are **electronic**, they require specific handling: 1. **Firmware Updates:** The internal "E2" trip units may require periodic firmware updates via the *Ekip Connect* software. 2. **Electrostatic Discharge (ESD):** When replacing the Rating Plug (SES-160), technicians must use ESD protection to avoid damaging the CMOS chips.