Tronic MCCB 400A 4-Pole Adjustable Circuit Breaker
TSh 914,000
Our review
This is a molded case circuit breaker from Tronic, rated at 400 amps with four poles and an adjustable trip setting. It is the kind of device an electrician or panel builder reaches for when a circuit needs protection against excessive current, whether from overload or short circuit. Four poles suit three-phase supplies where the neutral also needs breaking, and the adjustability lets you tune the trip point to the load rather than accepting a fixed threshold.
It is aimed at people working on distribution boards, industrial control panels or larger installations, not at casual DIY use. Before buying, confirm your system voltage and frequency fall within the range the breaker supports, check that 400 amps matches your calculated load and cable rating, and decide whether four poles are actually required. Compare against fixed-trip MCCBs and against fuse-based protection, weighing reset convenience against cost.
Sold and delivered by Sokonia. We may earn a commission when you buy through this link.