Parameter Category Specification Assembly Type Low-Voltage Switchgear Functional Unit / Cabinet Standard IEC 61439-1 & -2 Internal Separation Form 1 (F1) - Common compartment for all live parts. Busbar System Rating • Rated Current (Ibm): 1250 A • Short-Time Withstand (Icw): Typically 35-50 kA for 1s (depends on design) • Peak Withstand (Ipk): ~2.2 x Icw Main Protective Device • Type: Emax E1 Frame, Draw-out Air Circuit Breaker • Rated Current (In): Matches or is derated from busbar, e.g., 1250A or 1000A. • Trip Unit: Electronic (PR1/P) with display. Protection functions: LSI. • Breaking Capacity (Icu): Typically 50 kA at 400V for this configuration. Key Breaker Features • Draw-out (W) for easy maintenance. • Motor Operated (M) for automatic spring charging. • Shunt Trip (P) for remote opening. • Additional accessories like auxiliary contacts (OF/SD) and undervoltage release (MN) are highly probable but not explicitly stated in this short code. Control Voltage The motor (M) and shunt trip (P) require an auxiliary control supply (e.g., 110V DC, 220V DC, or 230V AC). This must be specified separately. Typical Configuration This describes a single feeder compartment in a larger switchboard (like MNS Digital) or a standalone cabinet. It would include: • The draw-out E1 breaker • Necessary shutters and interlocks • Cable connection chambers • Local control and indication (possibly a door-mounted mimic) IP Rating (Enclosure) Typically IP31, IP41, or IP54 depending on the overall switchgear series.