1. Main Circuit Breaker (Molded Case Circuit Breaker - MCCB) * Brand and Model: CHNT NM1-250S/3300 * Rated Current (I_n): 250 Amperes (3 Phase / 3 Pole) * Insulation Voltage (U_i): 800 Volts * Breaking Capacity (I_{cu}): 35kA at 380/415V 2. Contactors * First Main Contactor: * Brand and Model: CHNT NXC-65 * Operational Capacity: 65 Amperes (for large loads up to approximately 30-37 kW) * Coil Voltage: 220V / 50-60Hz * Second Contactor: * Brand and Model: LS Metasol MC-65a * Operational Capacity: 65 Amperes * Auxiliary Contactor (Small): * Brand and Model: CHNT NXC-09 (9 Amperes for control or small sub-loads) 3. Control System and External Door * Operation Switches: 3 Selector Switches mounted on the inner door for manual/automatic control. * Grounding and Wiring: Wiring through plastic cable ducts with insulated copper cable lugs.