ABB 1SCA151421R1001 OTM63F2C20D230C 2P 2.5 kA Icw Automatic Transfer Switch

The ABB 1SCA151421R1001 OTM63F2C20D230C is a self-supplied automatic transfer switch rated 63 A at 2 poles, sized for single-phase 220-240 V AC mains-generator changeover. Its type 20D control unit uses fixed operating parameters set at the factory, which keeps commissioning simple where field adjustment isn't needed. It withstands 2.5 kA for 1 s and mounts on a DIN rail or base plate.

Technical Specifications

Selection Notes

This is the only 2-pole unit in the batch, matched to a single-phase 220-240 V circuit rather than the 3-phase 380-415 V systems the 3P and 4P OTM63 variants serve - check the supply configuration before specifying it on a 3-phase board. Like the other 20D units in this range, switching thresholds and delay are fixed at the factory, which is sufficient where the installation runs on a standard single-phase generator changeover sequence. It shares the 2.5 kA, 1-second short-time withstand common to the smaller Compact ATS frames.