ABB DSAI110 57120001-DP Brand New

Introduction

SACE Tmax XT moulded-case circuit-breakers are the ideal solution for all distribution levels, from the main low voltage switchboard to the subswitchboards in the installation. They feature high specific let-through current peak and energy limiting characteristics that allow the circuits and equipment on the load side to be sized in an optimum way. SACE Tmax XT circuit-breakers with thermomagnetic and electronic trip units protect against overloads, short-circuits, earth faults and indirect contacts in low voltage distribution networks.

The SACE Tmax XT family of moulded-case circuit-breakers can be equipped with:

thermomagnetic trip units(G3.2), for direct and alternating current network protection, using the physical properties of a bimetal and an electromagnet to detect the overloads and short-circuits;

electronic trip units(G3.4), for alternating current network protection.

Releases with microprocessor technology obtain protection functions that make the operations extremely reliable and accurate.

The power required for operating them correctly is supplied straight from the current sensors of the releases.

This ensures that they trip even in single-phase conditions and on a level with the minimum setting.

The electronic protection trip unit consists of:

1.3 or 4 current sensors (current transformers);

2.a protection unit;

3.an opening solenoid (built into the electronic trip unit).

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