Moulded-case circuit breakers are selected by frame size, rated current In, number of poles, breaking capacity class (e.g. 25/36/50/70 kA at 415 V) and trip unit type (thermal-magnetic TM or electronic). Functional equivalents exist across Schneider ComPacT NSX (100/160/250/400/630), ABB SACE Tmax XT (XT1–XT7), Eaton NZM (NZM1–NZM4) and Siemens SENTRON 3VA (3VA1/3VA2). This table groups the catalogue by rated current and poles so a replacement of equal rating can be located; confirm the breaking capacity code and the trip unit before ordering.
Frame guidance: 16–160 A → NSX100/160, XT1/XT2, NZM1, 3VA10/3VA11; 160–250 A → NSX250, XT3/XT4, NZM2, 3VA12/3VA20; 320–630 A → NSX400/630, XT5, NZM3, 3VA22/3VA23; 800–1600 A → NS800–1600, XT6/XT7, NZM4, 3VA24/3VA25. Accessories (rotary handles, shunt releases, auxiliary contacts) are frame-specific and not interchangeable across makes.
Coverage: 3,584 catalogue rows with a readable rating, of 4,108 in these categories. Each cell lists up to six part numbers per make; click a part number for the product page and a quotation.
Part numbers and designations are those of the original manufacturers and are given for identification. cBallast is an independent supplier; confirm ratings against the nameplate of the installed equipment before ordering. Table generated from the cBallast catalogue on 2026-09-29.