The Siemens 3VA2580-7JP42-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 800 A continuous current across a wide ambient range — it holds 800 A from 40 °C through 60 °C, then derates to 767 A at 65 °C and 703 A at 70 °C. That thermal stability makes it a strong choice for high-ambient panels in switchrooms or process areas where cooling is marginal. Four-pole construction with the ETU550 electronic trip unit gives adjustable long-time (tr 0.5–25 s), short-time (tsd 0.05–0.5 s), and instantaneous protection, plus N-conductor protection configurable to OFF, 50%, or 100% of the phase current. Ground-fault monitoring is not built in — specify an external module if that loop is required. Breaking capacity sits at 242 kA at 240 V and 415 V, dropping to 74 kA at 690 V.
Integration notes for panel builders
Dimensions are 320 mm high, 280 mm wide, 120 mm deep. Communication function is onboard (yes), so it can integrate with a BMS or SCADA system for remote monitoring and trip-event capture. The ETU550 electronic trip unit supports adjustable curves and event logging via the communication interface.