ABB 1SCA153626R1001 OXB1600E3X2QT 3P 1600A 65kA Automatic Transfer Switch

ABB's 1SCA153626R1001 TruONE OXB1600E3X2QT automatic transfer switch handles 1600 A across 3 poles and withstands 65 kA for 0.1 s, making it suited to a main incomer that must switch between two independent sources. Supply cabling connects at the top of the enclosure, with the load terminals at the bottom, and a Level 2 DIP-switch controller sets the basic transfer logic.

Technical Specifications

Certifications & Standards

• IEC 60947-6-1

Selection Notes

At 1600 A, the OXB1600E3X2QT sits in the largest TruONE frame offered here, making it a fit for main-incomer transfer duty ahead of distribution panels. The 3-pole (X) build leaves the neutral unswitched, which works where the installation already has a single bonded neutral; pick the 4-pole (S) version if the neutral itself needs to be opened during transfer. Choosing the top-supply QT termination over the QB variant comes down to whether the upstream feeders drop in from above or below the enclosure. A Level 2 DIP controller is adequate where transfer logic does not need to be reviewed on a display; the Level 3 and Level 4 variants in this frame add that visibility.