Tronic Industrial 3-Pole Circuit Breaker – 200A, 21kA MCCB

Our review

This Tronic moulded case circuit breaker is a three-pole device rated at 200A with a breaking capacity of 21kA at 400/415V. It is built for three-phase electrical systems, so it suits industrial plants, commercial buildings, and infrastructure projects where a main or sub-main needs reliable protection against overloads, short circuits, and electrical faults. Before buying, confirm your system voltage and the fault level at the point of installation, because the 21kA rating must meet or exceed the prospective short-circuit current. Also check that 200A matches your load and cable size, and that the pole configuration fits your panel. Compared with smaller miniature breakers, this MCCB class handles higher currents and interrupts larger faults, but it is not a substitute for correct coordination with upstream and downstream devices. If your fault level or current demand is lower, a smaller frame may be more economical; if higher, step up to a larger breaking capacity.