### BGL36070LU: Technical Overview The **BGL36070LU** is a high-performance, molded case circuit breaker (MCCB) belonging to the **PowerPact B-Frame** family manufactured by Schneider Electric (Square D). It is designed to provide overcurrent protection and switching for electrical distribution systems. --- ### Core Specifications The following table outlines the primary electrical and physical characteristics of the BGL36070LU: | Feature | Specification | | :--- | :--- | | **Frame Type** | PowerPact B-Frame | | **Number of Poles** | 3-Pole (3P) | | **Current Rating ($I_n$)** | 70 Amperes | | **Voltage Rating ($U_e$)** | 600Y/347 VAC | | **Interrupting Rating** | 35 kA @ 480V / 65 kA @ 240V | | **Trip Unit Type** | Thermal-Magnetic (Non-adjustable) | | **Connection Type** | EverLink Lugs (Line side) / EverLink Lugs (Load side) | | **Mounting Mode** | Unit Mount (Bolt-on) | | **Control Logic** | Micrologic (Standard Toggle) | --- ### Electronic and Internal Components While this specific model uses a **Thermal-Magnetic** trip unit rather than a fully digital/electronic trip unit, it incorporates several sophisticated engineering components: #### 1. Thermal-Magnetic Trip Unit * **Thermal Protection:** Uses a bimetallic strip that bends in response to heat buildup. This provides a "time-delay" trip for sustained overloads. * **Magnetic Protection:** Uses an electromagnetic solenoid that reacts instantaneously to high-level short circuits to prevent equipment damage. #### 2. EverLink™ Connector Technology The "LU" designation refers to the integrated **EverLink lugs**. This is a patented terminal technology that includes a spring-loaded mechanism to compensate for "creep" (the tendency of conductors to loosen over time). This ensures a permanent, high-pressure electrical connection without the need for periodic retightening. #### 3. Integrated Control and Signaling The B-Frame architecture supports various field-installable electronic accessories: * **Auxiliary Switches (OF):** Indicate whether the breaker is open or closed. * **Error Switches (SD):** Indicate if the breaker has tripped due to a fault. * **Voltage Releases:** Including Shunt Trips (MX) for remote tripping or Undervoltage Releases (MN). --- ### Dimensions and Compliance * **Height:** 5.39 in (137 mm) * **Width:** 3.19 in (81 mm) * **Depth:** 3.15 in (80 mm) * **Certifications:** UL Listed, CSA Certified, IEC Rated, and CE Marked.