ABB Sace Emax2 E4.2

The Sace Emax2 E4.2 is a high-performance air circuit breaker from ABB Sace Emax2 series, designed for low voltage main distribution and heavy-duty power protection. This Sace Emax2 E4.2 covers rated uninterrupted current ranges from 2000A up to 4000A, supporting 3-pole and 4-pole configurations for AC systems up to 690V. The Sace Emax2 E4.2 is available in fixed and withdrawable versions, which simplifies inspection, testing and direct replacement inside power distribution cabinets without full busbar shutdown.

This Sace Emax2 E4.2 adopts Ekip electronic trip units, including Ekip Dip, Ekip Touch and Ekip G Touch variants, with configurable LSIG protection functions for overload, short-circuit, earth fault and phase imbalance. The Sace Emax2 E4.2 supports built-in communication ports, enabling remote monitoring, fault logging and integration with SCADA and building energy management systems. Engineers select this Sace Emax2 E4.2 for power plants, data centers, industrial substations and large commercial distribution networks that require high breaking capacity and continuous power supply.

The Sace Emax2 E4.2 offers multiple breaking capacity grades marked N, H and V, with reliable short-circuit interruption performance under high fault current conditions. Standard accessories for the Sace Emax2 E4.2 include auxiliary contacts, under-voltage releases, shunt trips and motor charging mechanisms for local and remote operation. Many panel builders and maintenance teams stock the Sace Emax2 E4.2 as spare breaker for cabinet upgrade and emergency replacement of main incoming feeders.