The EZCV250H3150 is a 3-pole molded case circuit breaker from the Schneider Electric EasyPact EZCV250H family, rated 150 A at 40 °C with a thermal-magnetic TM-D trip unit. The TM-D trip unit combines a thermal element for overload protection and a magnetic element for short-circuit protection, plus integrated earth-leakage protection, so it covers ground faults in the same package without an external module. Breaking capacity is 100 kA Icu at 220–240 V AC, 36 kA at 380–415 V, and 25 kA at 440 V AC, all per IEC 60947-2. Verify available fault current against the 440 V rating if your system runs at that voltage.
Standards compliance covers IEC 60947-2, EN/IEC 60947-1, JIS C8201-2-2, and GB/T 14048.2 — so it is accepted in European, Japanese, and Chinese installations.
Fixed mounting on a backplate — not DIN-rail snap-on. The 105 mm width and 165 mm height fit standard MCCB panel cutouts; depth is 68 mm including the front-connected terminals. Connection pitch is 35 mm, matching typical busbar or cable-lug spacing for 150 A class breakers. IP20 finger protection on the front face; the enclosure itself is IK07 rated for impact resistance per EN 50102. Mechanical durability is 10,000 cycles — typical for a distribution MCCB not used for frequent switching. If your application requires daily load switching, consider a contactor in series; this breaker is designed for protection and infrequent manual operation via the toggle handle.