Technical catalog of ABB TMAX, ISOMAX and EMAX molded case circuit breakers with specifications, dimensions and wiring diagrams.
The catalog presents ABB's TMAX, ISOMAX and EMAX molded case circuit breakers, which comply with UL 489 and CSA C22.2 standards. It covers the full product range, including current ratings, interrupting capacities, accessories, characteristic curves and wiring diagrams.
Detailed dimensions, insulation distances and installation guidelines are provided for each series, along with information on double‑insulation, industrial‑IT integration and available trip unit options.
| Current rating range | 15 A – 2500 A |
|---|---|
| Interrupting rating (480 V AC) | up to 150 kA |
| Interrupting rating (277 V AC, T‑max UL series) | 18 kA |
| Insulation | Double insulation technique |
The interrupting rating can reach up to 150 kA at 480 V AC.
Current ratings are offered from 15 A up to 2500 A.
Yes, they use a double‑insulation technique for added safety.